title: Magnetic resonance angiography and measurement of blood flow in the peripheral vessels.
abstract: Peripheral vascular disease has been evaluated using conventional imaging techniques such as contrast angiography to demonstrate the morphology and duplex sonography to evaluate the hemodynamic significance of a stenosis. Two-dimensional time-of-flight (TOF) magnetic resonance angiography (MRA) provides useful anatomic information in both normal and diseased popliteal and tibioperoneal vascular segments, whereas corresponding velocity-encoded cine MR determined velocities and waveforms correlate well with those determined using color-coded sonography and showed excellent interstudy reproducibility. Velocity-encoded cine MR may be useful in assessing the hemodynamic significance of a peripheral vascular stenosis whose severity might be overestimated by using MRA alone. When two-dimensional TOF MRA is combined in a complementary manner with velocity-encoded cine MR, the anatomic information from contrast angiography and the physiologic information from duplex sonography can be obtained during the course of one MR examination.
authors: Department of Radiology, University of California Medical Center, San Francisco 94143.
authors: G R
authors: GR
authors: Caputo
authors: C B
authors: CB
authors: Higgins
mesh_terms: D001157:Arterial Occlusive Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001783:Blood Flow Velocity / Q000502:physiology; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D016491:Peripheral Vascular Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011150:Popliteal Artery / Q000473:pathology*; D016909:Tibial Arteries / Q000473:pathology*; D014463:Ultrasonography