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Table 2: Detailed characteristics of 104 patients with 111 aneurysms with long-term MRA follow-up
Characteristics 
Patient 
    Women 71 (69 %)
    Mean age (yr) 54.7 (median, 54; range, 39–70)
Aneurysm 
    Ruptured 84 (81 %)
    Mean size (mm) 6.6 (median, 5; range, 3–17)
    ≤5 mm 42 (46.9%)
    6–10 mm 40 (36.1%)
    ≥10 mm 19 (17 %)
Aneurysm location
    Anterior circulation 65 (58.5%)
    Pericallosal artery 3
    Anterior communicating artery 18
    A1 2
    Middle cerebral artery 11
    Supraclinoid internal carotid artery 7
    Anterior choroidal artery 4
    Posterior communicating artery 14
    Carotid ophthalmic artery 6
Posterior circulation 46 (41.5%)
    Basilar tip 24
    Posterior inferior cerebellar artery 10
    Superior cerebellar artery 7
    Posterior cerebral artery 4
    Basilar trunk 1

Characteristics
Patient
Women	71 (69 %)
Mean age (yr)	54.7 (median, 54; range, 39–70)
Aneurysm
Ruptured	84 (81 %)
Mean size (mm)	6.6 (median, 5; range, 3–17)
≤5 mm	42 (46.9%)
6–10 mm	40 (36.1%)
≥10 mm	19 (17 %)
Aneurysm location
Anterior circulation	65 (58.5%)
Pericallosal artery	3
Anterior communicating artery	18
A1	2
Middle cerebral artery	11
Supraclinoid internal carotid artery	7
Anterior choroidal artery	4
Posterior communicating artery	14
Carotid ophthalmic artery	6
Posterior circulation	46 (41.5%)
Basilar tip	24
Posterior inferior cerebellar artery	10
Superior cerebellar artery	7
Posterior cerebral artery	4
Basilar trunk	1