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Table 2: 
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
 Straightness11 (48%)13 (59%).449
 High bifurcation position10 (43%)10 (46%).894
Morphologic features of contralateral STA
 Cross-sectional area (mm2)0.11 (SD, 0.02)0.12 (SD, 0.04).095
 Straightness12 (52%)2 (55%).873
 High bifurcation position14 (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.