Skip to main content

Table 2 Preoperative imaging of anterior communicating artery aneurysm and significant radiographic finding (n = 150)

From: Surgical outcomes of patients after treatment of ruptured anterior communicating artery aneurysms: “real-world” evidence from southern Thailand

Variable n (%)
Imaging modalitya  
 CTA 4 (2.7)
 DSA 134 (89.3)
 Both CTA and DSA 12 (8.0)
Mean aneurysm size ± SD (mm)  
 Dome size 5.47 ± 2.54
 Neck size 2.96 ± 1.16
 DN ratio 2.00 ± 0.98
Origin of aneurysm  
 Right A1-A2 47 (31.3)
 Left A1-A2 95 (63.3)
 ACom 8 (5.3)
Aneurysm dome projection in sagittal plane  
 Superior 54 (36.0)
 Anterior 70 (46.7)
 Posterior 5 (3.3)
 Inferior 21 (14.0)
Multiple aneurysms 12 (8.0)
Anatomical variations  
 A1 hypoplasia 81 (54.0)
 Fenestrated ACom 5 (3.3)
 Triplicate A2 2 (1.3)
Angiographic vasospasm  
 Diffused 20 (13.3)
 Local 50 (33.3)
Modified Fisher grade  
 I 39 (26.0)
 II 26 (17.3)
 III 29 (19.3)
 IV 56 (37.3)
Intracerebral hemorrhage 47 (31.3)
Intraventricular hemorrhage 82 (54.7)
Hydrocephalus 19 (12.7)
  1. aCranial computed tomography scans were included in all cases
  2. ACom, anterior communicating artery; A1, A1 segment of anterior cerebral artery; A2, A2 segment of anterior cerebral artery; CTA, computed tomography angiography; DN, dome-to-neck; DSA, digital subtraction angiography; SD, standard deviation