Table 3. Assessment of Image Quality according to Aneurysm Location on Silent MRA and TOF MRA.

Location	Silent MRA	TOF MRA	P
dICA (n = 57)	4.25 ± 0.91	3.05 ± 1.16	< 0.001
MCA (n = 21)	4.57 ± 0.75	2.19 ± 0.68	< 0.001
ACA (n = 13)	4.54 ± 0.66	2.46 ± 0.66	< 0.001
Posterior (n = 10)	4.50 ± 0.71	2.90 ± 0.74	0.013

Data are mean ± standard deviation. ACA = anterior cerebral artery, dICA = distal internal carotid artery, MCA = middle cerebral artery, MRA = MR angiography, Silent MRA = MRA using the Silent Scan algorithm, TOF = time-of-flight