Table 1:

For the 70 patients with MCA aneurysms, mean ± SD flow rates (mL/min) in the major arteries and mean flow divisions at the ICA terminus^{^a}

Outflow Method	ACA	MCA	OA	PcomA	ACA:MCA
Zero-pressure	103 ± 50	137 ± 53	15 ± 10	71 ± 42	43:57
Murray-law	89 ± 47	152 ± 57	14 ± 11	65 ± 46	37:63
Splitting	86 ± 38	154 ± 46	16 ± 8	60 ± 30	36:64
Literature values	84 ± 24	142 ± 31	11 ± 5	59 ± 14^{^b}	37:63