Characteristics of Patients and Aneurysms

Aneurysm Size (mm)Aneurysm NumberMean Age ± SD (yr)% FemaleMost Common Indication for MSCTA (%)Most Common Location (%)
<43650 ±1260Subarachnoid hemorrhage (46)MCA Bi/Tri (19)
PcoA (14)
AcoA (14)
4–106355 ±1160Subarachnoid hemorrhage (58)PcoA (22)
AcoA (13)
MCA Bi/Tri (8)
>102253 ±1445Subarachnoid hemorrhage (41)MCA Bi/Tri (18)
ICA SC (18)
PcoA (14)
  • Note.—MSCTA indicates multi-section CT angiography; MCA Bi/Trif, bifurcation/trifurcation of middle cerebral artery; PcoA, posterior communicating artery; AcoA, anterior communicating artery; ICA SC, supraclinoid segment of internal carotid artery.