Magnetic resonance angiography of the pelvis and lower extremities. Works in progress.
Two-dimensional time-of-flight (TOF) magnetic resonance angiography (MRA) of the lower extremities has recently been rediscovered as a technique that can be used to find small vessels in the foot and leg for surgical revascularization in patients with severe peripheral vascular disease. The purpose of this article is to acquaint the reader with some of the common problems that may be encountered in this imaging technique and to show their derivations and solutions were applicable. In addition, the authors show receiver operator curve analysis of one radiologist's ability to determine the location and patency of arteries using this technique to be outstanding (AZ, 0.9737). This represents a promising new technique for imaging the arterial system in patients with severe peripheral vascular disease.
Schiebler
M L
ML
Department of Radiology, Hosptial of the University of Pennsylvania, Philadelphia, Pennsylvania.
Listerud
J
J
Holland
G
G
Owen
R
R
Baum
R
R
Kressel
H Y
HY
D001808:Blood Vessels / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007866:Leg / Q000098:blood supply*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010388:Pelvis / Q000098:blood supply*; D016491:Peripheral Vascular Diseases / Q000175:diagnosis*; D011673:Pulsatile Flow / Q000502:physiology; D012372:ROC Curve; D012039:Regional Blood Flow / Q000502:physiology; D014654:Vascular Patency / Q000502:physiology