Table 1:

Patient information and characteristics of aneurysms treated with the FD

Patients161
Aneurysms186
Women (%)72.4
Mean age (yr) (range)57.1 (28–82)
Presentation/indications for treatment (%)
    Incidental finding/headaches31.8
    Recurrent after coiling/coiling and stenting21.7
    Cranial nerve deficit/mass effect18.6
    Associated second ruptured aneurysm13.1
    Stroke/transient ischemic attack7.8
    Subarachnoid hemorrhage (not acute)3.9
    Recurrent after clipping/failed clipping2.3
    Seizures0.8
Total No. of aneurysms treated186
    <5 mm53
    5–9.9 mm64
    10–20 mm47
    >20 mm22
Measurements (mean ± SEM)
    Aneurysm dome size (mm)10.4 ± 0.7
    Aneurysm neck size (mm)6 ± 0.4
    Dome: neck ratio1.6 ± 0.08
    Proximal parent artery diameter (mm)3.8 ± 0.1
    Distal parent artery diameter (mm)3.0 ± 0.1
Anterior circulation ICA (%)118 (63.4)
    Petrocavernous5 (2.7)
    Cavernous20 (10.7)
    Carotid cave3 (1.6)
    Superior hypophyseal5 (2.7)
    Paraophthalmic34 (18.2)
    Paraclinoid ICA4 (2.2)
    Supraclinoid ICA6 (3.2)
    Posterior communicating artery36 (19.4)
    Anterior choroidal artery5 (2.7)
Anterior circulation distal to circle of Willis (%)41 (22)
    ICA terminus5 (2.7)
    Anterior cerebral artery (including AcomA and pericallosal)12 (6.4)
    Middle cerebral artery24 (12.9)
Posterior circulation (%)27 (14.5)
    Vertebral artery (VA and VB junction)8 (4.3)
    Posterior inferior cerebellar artery6 (3.2)
    Basilar trunk9 (4.8)
    Posterior cerebral artery3 (1.6)
    Superior cerebellar artery1 (0.5)
Morphology (%)
    Wide-neck saccular125 (67.2)
    Fusiform/dissecting54 (29.0)
    Blister7 (3.8)
Focal disease100 (53.8)
Dysplastic artery86 (46.2)
  • Note:—AcomA indicates anterior communicating artery; VA, vertebral artery; VB, vertebrobasilar; SEM, standard error of the mean.