Table 2.

The morphological characteristics with ruptured and unruptured aneurysms.

Morphologic parameters	Aneurysm groups		P
	Unruptured (n = 147)	Ruptured (n = 214)
Irregular shape*	46 (31.3%)	151 (70.6%)	< 0.001
Type C	93 (63.3%)	144 (67.3%)	0.432
A1 dominance*	105 (71.4%)	183 (85.5%)	0.044
Direction of dome
A	54 (36.7%)	80 (37.4%)	0.912
B	25 (17.0%)	28 (13.1%)	0.364
C	55 (37.4%)	84 (39.3%)	0.742
D	13 (8.8%)	22 (10.3%)	0.720
Neck width (mm)	4.06 ± 1.58	3.84 ± 1.31	0.406
Width (mm)*	4.17 ± 2.26	5.03 ± 2.46	< 0.001
Depth (mm)*	4.37 ± 2.51	5.87 ± 2.49	< 0.001
Maximum diameter (mm)*	5.27 ± 2.62	6.88 ± 2.78	< 0.001
AR*	1.09 ± 0.53	1.59 ± 0.69	< 0.001
DW*	1.06 ± 0.38	1.24 ± 0.38	< 0.001
BF*	1.03 ± 0.37	1.33 ± 0.52	< 0.001
MD (mm)*	2.55 ± 0.45	2.32 ± 0.44	< 0.001
SR*	1.78 ± 1.08	2.69 ± 1.36	< 0.001
Flow angle (°)	131.43 ± 22.82	130.57 ± 20.78	0.625
Parent–larger daughter angle (°)	98.22 ± 23.0	101.87 ± 23.92	0.123
Parent–smaller daughter angle (°)*	95.03 ± 22.52	103.32 ± 23.68	0.002
LAR	1.10 ± 0.42	1.04 ± 0.38	0.306

A, anterior–inferior; B, anterior–superior; C, posterior–inferior; D, posterior–superior; AR, aspect ratio; DW, depth/width ratio; BF, bottleneck factor; MD, mean diameter; SR, size ratio; FR, flow angle; LAR, lateral angle ratio.

^*Variables showing significant difference by univariate analysis (P < 0.05).