FA-64806 / Clinical triage scoring / Open access
Cervical spine imaging decision rule: low-risk factor quantifier · case 01
Patients with a single low-risk factor are imaged without a rotation test.
ROOT CAUSE
The rule requires every low-risk factor instead of any one of them.
VERIFIED REPAIR
Proceed to the rotation test when any low-risk factor is present.
Unsuccessful approach: Requiring two factors still images patients with exactly one.
Case contract
Input {age, gcs, dangerous_mechanism, paresthesias, simple_rear_end, sitting, ambulatory, delayed_onset, no_midline_tenderness, rotate_left, rotate_right (degrees)}. Toy rule: age < 16 or gcs < 15 NOT_APPLICABLE. High risk (age >= 65, dangerous mechanism or paresthesias) -> IMAGE. If none of the low-risk factors (simple rear-end collision, sitting, ambulatory, delayed onset, no midline tenderness) is present -> IMAGE. Otherwise NO_IMAGE when active rotation reaches 45 degrees both left and right, else IMAGE. Return {decision}.
Why this case matters
Imaging decision rules chain any-of and all-of gates; confusing the quantifiers or thresholds is a distinct defect at each gate.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
if x['age'] < 16 or x['gcs'] < 15:
return {'decision': 'NOT_APPLICABLE'}
if x['age'] >= 65 or x['dangerous_mechanism'] or x['paresthesias']:
return {'decision': 'IMAGE'}
low = [x['simple_rear_end'], x['sitting'], x['ambulatory'], x['delayed_onset'], x['no_midline_tenderness']]
if not all(low):
return {'decision': 'IMAGE'}
if x['rotate_left'] >= 45 and x['rotate_right'] >= 45:
return {'decision': 'NO_IMAGE'}
return {'decision': 'IMAGE'}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 51,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 61},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 31,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 21,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 31,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 26,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 52,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 62},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 32,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 22,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 32,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 27,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 53,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 63},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 33,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 23,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 33,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 28,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 54,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 64},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 34,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 24,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 34,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 29,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 55,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 65},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 25,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 35,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 30,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})]]
for label, args, expected in fixtures[N-1]:
check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| age exactly 65 | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| age 64 with low-risk factors | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| single low-risk factor | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| two low-risk factors | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| all low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation exactly 45 both ways | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| rotation limited to one side | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias in ambulatory patient | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias non-ambulatory | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| adolescent below applicability | {'decision': 'NOT_APPLICABLE'} | {'decision': 'NOT_APPLICABLE'} | Passed |
SHA-256 / 83144170497863cae316e7c5f38cd3d6513c646ab4e8e13269663545e4d30276
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
if x['age'] < 16 or x['gcs'] < 15:
return {'decision': 'NOT_APPLICABLE'}
if x['age'] >= 65 or x['dangerous_mechanism'] or x['paresthesias']:
return {'decision': 'IMAGE'}
low = [x['simple_rear_end'], x['sitting'], x['ambulatory'], x['delayed_onset'], x['no_midline_tenderness']]
if sum(low) < 2:
return {'decision': 'IMAGE'}
if x['rotate_left'] >= 45 and x['rotate_right'] >= 45:
return {'decision': 'NO_IMAGE'}
return {'decision': 'IMAGE'}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 51,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 61},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 31,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 21,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 31,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 26,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 52,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 62},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 32,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 22,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 32,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 27,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 53,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 63},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 33,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 23,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 33,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 28,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 54,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 64},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 34,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 24,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 34,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 29,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 55,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 65},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 25,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 35,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 30,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})]]
for label, args, expected in fixtures[N-1]:
check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| age exactly 65 | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| age 64 with low-risk factors | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| single low-risk factor | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| two low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| all low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation exactly 45 both ways | {'decision': 'IMAGE'} | {'decision': 'NO_IMAGE'} | Failed |
| rotation limited to one side | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias in ambulatory patient | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias non-ambulatory | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| adolescent below applicability | {'decision': 'NOT_APPLICABLE'} | {'decision': 'NOT_APPLICABLE'} | Passed |
SHA-256 / 13254c191fb2dce792f8438e234dbfaef663b7d523c88f6741c50a5157afed8a
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
if x['age'] < 16 or x['gcs'] < 15:
return {'decision': 'NOT_APPLICABLE'}
if x['age'] >= 65 or x['dangerous_mechanism'] or x['paresthesias']:
return {'decision': 'IMAGE'}
low = [x['simple_rear_end'], x['sitting'], x['ambulatory'], x['delayed_onset'], x['no_midline_tenderness']]
if not any(low):
return {'decision': 'IMAGE'}
if x['rotate_left'] >= 45 and x['rotate_right'] >= 45:
return {'decision': 'NO_IMAGE'}
return {'decision': 'IMAGE'}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 51,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 61},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 31,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 21,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 31,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 26,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 52,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 62},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 32,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 22,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 32,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 27,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 53,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 63},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 33,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 23,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 33,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 28,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 54,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 64},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 34,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 24,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 34,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 29,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 55,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 65},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 25,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 35,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 30,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})]]
for label, args, expected in fixtures[N-1]:
check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| age exactly 65 | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| age 64 with low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| single low-risk factor | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| two low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| all low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation exactly 45 both ways | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation limited to one side | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias in ambulatory patient | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias non-ambulatory | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| adolescent below applicability | {'decision': 'NOT_APPLICABLE'} | {'decision': 'NOT_APPLICABLE'} | Passed |
SHA-256 / 4ae95c76837b99926340bb6dab1260432d77a024e4a10f2630f08710aa8c369f
Verification & scope
A deterministic toy software model with explicitly stipulated thresholds and formulas; it is not clinical guidance, not a validated medical calculator, and makes no claim of conformance to any published protocol. Numbered variants vary patient and order inputs. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.
Observations recorded using Python 3.12.14 at 2026-09-29T14:47:28.130950+00:00.
Case digest / 3ead4434ee6c029e62fe8029b1e03f90170493213c68570392ef69fc9ed3530d