Advances in contrast-enhanced MR-angiography: Indications and limitations
نویسندگان
چکیده
Gadolinium(Gd)-enhanced three-dimensional (3D) magnetic resonance angiography (MRA) is a newer technique that provides high resolution data rapidly for depiction of both arteries and veins throughout the body.1 Improvements in gradient technology now allow an entire volume of 3D-Gd-enhanced MRA to be performed at 4 second intervals. It is now possible to acquire several volumes of high temporal resolution 3D data sets in a 1020 second breath hold. Because it relies on T1 shortening effects of circulating Gd-chelate contrast media and not inherent flow characteristics, Gd-enhanced 3D-MRA can often depict pathologic vascular segments that are not adequately visualised using unenhanced flow based MRI-techniques. In addition, Gd-enhanced 3D-MRA provides volumetric data that can be processed for multiplanar reforRadiol Oncol 2002; 36(2): 103-8.
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