Table 2. Morphological and perfusion data in the MMD group and IAS group.
| Parameters | Group | ||
|---|---|---|---|
| IAS group (N=20) (average value and 95% CI) | MMD group (N=20) (average value and 95% CI) | P value (independent-sample t-test) | |
| Outer diameter (mm) | 3.59 (3.22–3.86) | 2.89 (2.68–3.11) | <0.01 |
| Inner diameter (mm) | 1.17 (1.00–1.36) | 0.71 (0.56–0.83) | <0.01 |
| Wall thickness (mm) | 1.39 (1.18–1.61) | 1.21 (1.07–1.37) | 0.303 |
| Maximum wall thickness (mm) | 2.10 (1.77–2.36) | 1.50 (1.36–1.65) | <0.01 |
| Mean-CBF (mL/100 g/min) | 30.21 (28.47–32.08) | 36.38 (33.21–40.12) | <0.01 |
| Mean-CBV (mL/100 g) | 47.99 (45.09–51.52) | 58.06 (53.29–65.05) | <0.01 |
| Mean-ATT (s) | 76.36 (71.90–81.55) | 79.78 (77.38–82.24) | <0.01 |
| Max-CBF (mL/100 g/min) | 66.25 (57.21–83.36) | 90.00 (70.01–111.99) | <0.01 |
| Max-CBV (mL/100 g/min) | 114.10 (104.78–129.14) | 150.80 (126.69–172.44) | <0.01 |
| Max-ATT (s) | 118.75 (111.52–129.32) | 121.95 (114.34–130.95) | 0.033 |
MMD, moyamoya disease; IAS, intracranial atherosclerotic stenosis; CBF, cerebral blood flow; CBV, cerebral blood volume; ATT, arterial transit time.