Table 2:

Class 2 discrepancies in clinically significant findings

	Age (yr)	Sex	NC or CE	Context	Discrepancies
1	66	F	CE	F-up meningioma	Progression vs stable
2	82	F	CE	F-up meningioma	Progression vs stable
3	47	M	NC	F-up subdural hematoma	Complete resolution vs partial regression
4	60	F	NC	F-up hydrocephalus	Stable vs progression
5	47	F	CE	F-up metastasis resection	No recurrence vs recurrence suspicion
6	77	M	CE	Lymphoma	Normal vs clival lesion
7	76	M	NC	F-up pituitary apoplexy	Unchanged vs new hemorrhage
8	63	M	NC	F-up glaucoma	Optic nerve atrophy vs normal
9	66	M	NC	F-up subdural hematoma	Persistence vs complete resolution
10	64	F	NC	Post-op adenoma	Residual mass vs normal
11	75	F	CE	Seizures	Schizencephaly vs no mention
12	74	M	NC	F-up subdural hematoma	Rebleeding vs no rebleeding
13	58	F	CE	F-up metastases	No recurrence vs recurrence
14	37	F	NC	F-up glioblastoma	Herniation vs no mention
15	62	F	CE	Breast CA	Choroidal mets suspicion vs no mention
16	77	F	NC	Dementia	White matter disease vs no mention
17	76	M	CE	Memory loss	Cerebral trophy vs no mention
18	42	M	CE	F-up glioblastoma	Progression vs stable

Note:—NC indicates noncontrast CT; CE, contrast-enhanced CT; CA, cancer; F-up, follow-up; Post-op, postoperative; mets, metastases.