Table 5:
Differences of the mean values of normalized hemodynamic parameters according to the presence of BMV
| Variable | BG |
ACA |
MCA |
EBZ |
||||
|---|---|---|---|---|---|---|---|---|
| BMV(+) | BMV(−) | BMV(+) | BMV(−) | BMV(+) | BMV(−) | BMV(+) | BMV(−) | |
| Observer 1 | ||||||||
| CBV | 1.34 | 1.22 | 1.21 | 1.14 | 1.06 | 0.98 | 1.24* | 1.07* |
| CBF | 1.27 | 1.21 | 0.85 | 0.97 | 0.75 | 0.89 | 0.78* | 0.99* |
| MTT | 1.10 | 1.04 | 1.45* | 1.21* | 1.46 | 1.20 | 1.76* | 1.20* |
| PC of CBV | −2% | 5% | −5% | −6% | −3% | 4% | −11% | −5% |
| PC of CBF | −29% | −15% | −24% | −17% | −33%* | −18%* | −39%* | −21%* |
| PC of MTT | 25% | 20% | 31% | 22% | 30% | 22% | 37% | 26% |
| Observer 2 | ||||||||
| CBV | 1.33 | 1.20 | 1.22 | 1.17 | 1.09 | 1.01 | 1.27* | 1.10* |
| CBF | 1.29 | 1.19 | 0.92 | 0.95 | 0.77 | 0.89 | 0.82* | 0.96* |
| MTT | 1.11 | 1.01 | 1.45* | 1.24* | 1.42 | 1.22 | 1.71* | 1.22* |
| PC of CBV | −4% | 5% | −7% | −9% | −6% | 1% | −9% | −4% |
| PC of CBF | −32% | −16% | −21% | −13% | −32%* | −19%* | −33%* | −19%* |
| PC of MTT | 27% | 24% | 35% | 27% | 27% | 19% | 34% | 27% |
Note:—CBV indicates normalized cerebral blood volume; CBF, normalized cerebral blood flow; MTT, normalized mean transit time; PC, percent change; BG, basal ganglia; ACA, anterior cerebral artery; MCA, middle cerebral artery; EBZ, anterior external border zone; BMV, basal Moyamoya vessel.
*
Values are statistically significant (P < .05) by using analysis of variance and the multiple comparison test.