Table 5:

Large-aneurysm Roy score distribution for initial result and subsequent follow-up angiograms

Initial Roy Grade	No. Aneurysms with Initial Result (%)	Class 1 on Follow-Up (%)	Class 2 on Follow-Up (%)	Class 3 on Follow-Up (%)	Recurrence (%)
Class 1: complete occlusion	18 (42.9)	11 (61.1)	1 (5.6)	6 (33.3)	7 (38.9)
Class 2: residual neck	16 (38.1)	8 (50.0)	6 (37.5)	2 (12.5)	2 (12.5)
Class 3: residual aneurysm	8 (19.0)	3 (37.5)*	0 (0)	5 (62.5)	3 (37.5)
Total	42 (100)	22 (52.4)	7 (16.7)	13 (31.0)	12 (28.6)

^*One of these 3 patients had parent-vessel occlusion on follow-up angiography, which was graded as Roy class 1.