Article Figures & Data
Figures
- Fig 1.
DSA studies showing examples of A1 segment categories with white and black arrows indicating right and left A1, respectively, for codominant (A) and dominant (B and C) configurations. Panels B and C demonstrate A1 dominant cases with diminutive and absent contralateral A1 segments, respectively.
- Fig 2.
Anatomic dimensions of aneurysm neck width and remnants taken at baseline and follow-up imaging. All cases with available measurements in each group were included regardless of angiographic classification as listed in Table 1. The A1-dominant AcomA aneurysm group had a larger mean neck width at baseline and more variance in neck remnant at follow-up, P = .03 and .01 by *t test and **F test, respectively.
Tables
Angiographic Occlusion Baseline Post-Coiling 5–7 Month Follow-Up AcomA Aneurysm A1 Codominant (n = 33), No. (%) AcomA Aneurysm A1 Dominant (n = 91), No. (%) Basilar/MCA Termination Aneurysms (n = 89), No. (%) AcomA Aneurysm A1 Codominant (n = 31), No. (%) AcomA Aneurysm A1 Dominant (n = 86), No. (%) Basilar/MCA Termination Aneurysms (n = 78), No. (%) Complete 12 (36%) 48 (53%) 45 (50%) 13 (42%) 34 (40%) 22 (28%) Neck remnant 16 (49%) 32 (35%) 29 (33%) 11 (35%) 31 (36%) 41 (53%) Sac filling 5 (15%) 11 (12%) 15 (17%) 7 (23%) 21 (24%) 15 (19%) Angiographic Occlusion at First Follow-Up AcomA Aneurysm A1 Co-Dominant (n = 31), No. (%) AcomA Aneurysm A1 Dominant (n = 86), No. (%) Complete 13 (42%) 29 (34%) Stable 0 (0%) 3 (3%) Improved 6 (19%) 17 (20%) Totala 19 (61%) 49 (57%) ↵a There were 12 (39%) and 37 (43%) from each group that did not meet the CCT definition of success at 5–7 month follow-up.
Baseline (n = 31a) Complete (n = 12) Neck Remnant (n = 15) Sac Filling (n = 4) A1 Codominant First follow-up (n = 31) Complete (n = 13) 9 4 0 Neck remnant (n = 11) 1 9 1 Sac filling (n = 7) 2 2 3 Baseline (n = 86a) Complete (n = 47) Neck Remnant (n = 30) Sac Filling (n = 9) A1 Dominant First follow-up (n = 86) Complete (n = 34) 26 7 1 Neck remnant (n = 31) 8 18 5 Sac filling (n = 21) 13 5 3 ↵a Only baseline cases with follow-up data were included (31 of 33 and 86 of 91).
