Comparison of measurements of the STA between participants with good and poor collateral formation
| Patients with MMD, Mean (SD) or No. (%) | P | ||
|---|---|---|---|
| Good Collateral Formation (n = 23) | Poor Collateral Formation (n = 22) | ||
| Morphologic features of ipsilateral STA | |||
| Cross-sectional area (mm2) | 0.10 (SD, 0.03) | 0.09 (SD, 0.02) | .258 |
| Straightness | 11 (48%) | 13 (59%) | .449 |
| High bifurcation position | 10 (43%) | 10 (46%) | .894 |
| Morphologic features of contralateral STA | |||
| Cross-sectional area (mm2) | 0.11 (SD, 0.02) | 0.12 (SD, 0.04) | .095 |
| Straightness | 12 (52%) | 2 (55%) | .873 |
| High bifurcation position | 14 (61%) | 9 (41%) | .181 |
| PC-MR imaging of ipsilateral STA | |||
| Vmean (cm/s) | 6.69 (SD, 2.02) | 5.30 (SD, 1.41) | .011 |
| Vpeak (cm/s) | 22.62 (SD, 5.79) | 17.00 (SD, 6.62) | .004 |
| BVF (mL/s) | 0.70 (SD, 0.32) | 0.50 (SD, 0.17) | .013 |
| PC-MR imaging of contralateral STA | |||
| Vmean (cm/s) | 7.08 (SD, 2.92) | 6.03 (SD, 1.53) | .141 |
| Vpeak (cm/s) | 23.06 (SD, 6.37) | 18.75 (SD, 6.07) | .025 |
| BVF (mL/s) | 0.74 (SD, 0.35) | 0.61 (SD, 0.26) | .166 |
Note:—Ipsilateral STA indicates superficial temporal artery on the operative side; Contralateral STA, superficial temporal artery on the nonoperative side.