http://www.appliedradiology.com RSS Feed on Applied Radiologyhttp://www.appliedradiology.com//Issues/2007/08/Supplements/Contrast-Enhanced-and-Unenhanced-MR-Angiography.aspxWith continued improvements in magnetic resonance imaging (MRI) technology (specifically stronger, faster gradients and higher magnetic fields), the quality of MR angiography (MRA) has improved exponentially. By catching a bolus of gadolinium from an intravenous injection as it passes through the arterial phase, it is possible to obtain high-resolution arterial images without venous contamination.1 This requires the use of the stronger, faster gradients, which are also required for echoplanar imaging (EPI).Wednesday, 08 Aug 2007 13:00:20 GMT