Predicting SFA stenosis severity with cine PC flow measurements during suprasystolic thigh compression
Zhang H, Mohajer K, Ho B, Prince M
Weill Medical College of Cornell University
Fourteen patients with suspected peripheral vascular disease underwent routine bolus chase peripheral MRA and 2D cine phase contrast flow measurements proximal and distal to SFA disease pre, during and post suprasystolic (200 mm Hg) thigh compression for 3 minutes. During compression, the decrease of flow volume at the lower level was greater in severe stenoses and occlusions. The peak delay was significantly prolonged for severe stenoses. After thigh compression, hyperemia was found in 19 arterial segments. 2D cine PC flow measurement at higher flow rates is helpful to determine if a borderline stenosis is flow limiting.