Table 1. Location and Proportion of 345 Patients with Aneurysms.

Location	Numbers (%)	Aneurysm Mean Size (mm)
Paraclinoid	118 (35%)	4.5
A-com & others	63 (19%)	5.2
M1 bifur & others	56 (17%)	4.9
P-com	39 (12%)	4.5
Terminal ICA	21 (6%)	4.1
Basilar tip & trunk	15 (4%)	5.8
VA & VBJ	11 (3%)	7.4
Cavernous ICA & others	10 (3%)	9.6
AchoA	6 (2%)	4.2
Total	339 (100%)	5.0

Sizes of six aneurysms (3 giant thrombosed or fusiform, 2 recurred and 1 dissecting) were not measurable. A-com = the anterior communicating artery, bifur = bifurcation, ICA = the internal carotid artery, VA = the vertebral artery, VBJ = the vertebra-basilar junction, AchA = the anterior choroidal artery