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Bilateral peak systolic flow velocities in cm/s derived from TCD and MR imaging (mean +/− SD)
Peak Systolic Flow [cm/s]
Vascular segment C1 M1 A1
MR imaging 73 +/− 11 71 +/− 11 69 +/− 5
TCD 73 +/− 12 100 +/− 13 116 +/− 53
Note:—TCD indicates transcranial Doppler sonography.
	Peak Systolic Flow [cm/s]
Vascular segment	C1	M1	A1
MR imaging	73 +/− 11	71 +/− 11	69 +/− 5
TCD	73 +/− 12	100 +/− 13	116 +/− 53