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Table 2: 
Location and sizes of cerebral aneurysms as detected by DSA
LocationSize Categories
Small (≤3.0 mm)Medium (3.1–5.0 mm)Large (>5 mm)
ICA
    Infraclinoid001
    Ophthalmic001
    PcomA162
    Carotid-T100
ACA
    A1010
    A1/A25167
    A2 and A33a03
MCA
    Trifurcation4b82
PCA011
BA
    Oral103
VA
    PICA032
    V4001
All153523
  • Note:—PcomA indicates posterior communicating artery; Carotid–T, intracranial ICA bifurcation; ACA, anterior cerebral artery; A1, A2, A3, segments of the ACA; PCA, posterior cerebral artery; BA, basilar artery; VA, vertebral artery; PICA, posterior inferior cerebellar artery; V4, distal segment of VA.
  • ↵a One aneurysm missed by bone-subtraction CTA.
  • ↵b One aneurysm missed by DSA but detected by bone-subtraction CTA.