Non-contrast-enhanced four-dimensional (4D) intracranial MR angiography: a feasibility study.

摘要: T1-shortening contrast agents have been widely used in time-resolved magnetic resonance angiography. To match imaging data acquisition with the short time period of first pass agent, temporal resolution and/or spatial to be compromised many cases. In this study, a novel non-contrast-enhanced technique was developed for Alternating magnetization preparation applied two consecutive acquisitions each measurement eliminate need media. Without constraint media kinetics, is drastically improved from order second as conventional contrast-enhanced approach tens milliseconds (50.9 msec) without compromising resolution. Initial results volunteer studies demonstrate feasibility method depict anatomic structure and dynamic filling main vessels head. Magn Reson Med 63:835–841, 2010. © 2010 Wiley-Liss, Inc.