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Table 1: Aneurysm characteristics
Characteristic No. (%) or Mean (Range)
Aneurysm location 
 Anterior circulation^{^a} 46 (88.5)
  ICA cavernous segment 2 (3.8)
  ICA paraophthalmic segment 29 (55.7)
  ICA posterior communicating segment 12 (23.1)
  ICA terminal segment 2 (3.8)
  M1 segment of MCA 1 (1.9)
 Posterior circulation 6 (11.5)
  Basilar artery 3 (5.8)
  Vertebral artery 2 (3.8)
  Posterior cerebral artery 1 (1.9)
Neck width (mm^{^b}) 5.0 (1.0–21.0)
Maximum aneurysm sac diameter (mm^{^b}) 9.0 (1.0–28.0)
 <10 32 (60.8)
 10–25 18 (34.6)
 ≥25 2 (3.8)
PED number (per aneurysm) 0.86 (45/52)
Adjunctive coils placed 15 (28.8)
↵a ICA according to the New York University classification.¹⁴
↵b Millimeter to the nearest 0.5.

Characteristic	No. (%) or Mean (Range)
Aneurysm location
Anterior circulation^{^a}	46 (88.5)
ICA cavernous segment	2 (3.8)
ICA paraophthalmic segment	29 (55.7)
ICA posterior communicating segment	12 (23.1)
ICA terminal segment	2 (3.8)
M1 segment of MCA	1 (1.9)
Posterior circulation	6 (11.5)
Basilar artery	3 (5.8)
Vertebral artery	2 (3.8)
Posterior cerebral artery	1 (1.9)
Neck width (mm^{^b})	5.0 (1.0–21.0)
Maximum aneurysm sac diameter (mm^{^b})	9.0 (1.0–28.0)
<10	32 (60.8)
10–25	18 (34.6)
≥25	2 (3.8)
PED number (per aneurysm)	0.86 (45/52)
Adjunctive coils placed	15 (28.8)