Table 2.

Assignment of MRI datasets for deep learning.

	3D T1-WI MRI			3D T2-WI MRI
	Total	MR 750 W	Architect	Total	Skyra	MR 750 W	Architect
Training	110	72	38	130	8	77	45
(DESH: non-DESH)	15: 95	12: 60	3: 35	28: 102	5: 3	16: 61	7: 38
Internal validation	30	20	10	30	4	20	6
(DESH: non-DESH)	8: 22	5: 15	3: 7	10: 20	3: 1	7: 13	0: 6
External validation (test)	19	16	3	20	2	18	0
(DESH: non-DESH)	4: 15	3: 13	1: 2	5: 15	2: 0	3: 15	0

DESH; disproportionately enlarged subarachnoid-space hydrocephalus. Non-DESH; absence of DESH.