M Bock1. 1. Klinik für Radiologie - Medizin Physik, Universitätsklinikum Freiburg, Medizinische Fakultät, Universität Freiburg, Killianstr. 5a, 79106, Freiburg, Deutschland. michael.bock@uniklinik-freiburg.de.
Abstract
BACKGROUND: The use of magnetic resonance imaging (MRI) contrast agents should be minimized in MR angiography. OBJECTIVE: Overview of existing native MRI techniques for MR angiography MATERIAL AND METHODS: Native MRI angiography uses the fact that unsaturated flowing blood is hyperintense to static tissue (time-of-flight MRA), that blood flow induces a detectable phase shift (phase contrast MRA), that labeling by selective inversion can dynamically image a bolus passage (arterial spin labeling) and that special MRI sequences exist which utilize the contrast properties of blood. CONCLUSION: Native MRI angiography, if properly selected, can reliably delineate vessels such as cerebral arteries and coronary arteries and can provide additional information about the flow dynamics.
BACKGROUND: The use of magnetic resonance imaging (MRI) contrast agents should be minimized in MR angiography. OBJECTIVE: Overview of existing native MRI techniques for MR angiography MATERIAL AND METHODS: Native MRI angiography uses the fact that unsaturated flowing blood is hyperintense to static tissue (time-of-flight MRA), that blood flow induces a detectable phase shift (phase contrast MRA), that labeling by selective inversion can dynamically image a bolus passage (arterial spin labeling) and that special MRI sequences exist which utilize the contrast properties of blood. CONCLUSION: Native MRI angiography, if properly selected, can reliably delineate vessels such as cerebral arteries and coronary arteries and can provide additional information about the flow dynamics.
Authors: Robert J McDonald; Jennifer S McDonald; David F Kallmes; Mark E Jentoft; David L Murray; Kent R Thielen; Eric E Williamson; Laurence J Eckel Journal: Radiology Date: 2015-03-05 Impact factor: 11.105