High-resolution multistation peripheral MR angiography using undersampled projection reconstruction imaging.

Autor: Du J; Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53792-3252, USA. jiang@mr.radiology.wisc.edu, Korosec FR, Thornton FJ, Grist TM, Mistretta CA
Jazyk: angličtina
Zdroj: Magnetic resonance in medicine [Magn Reson Med] 2004 Jul; Vol. 52 (1), pp. 204-8.
DOI: 10.1002/mrm.20102
Abstrakt: A novel protocol for three-station MR angiography (MRA) of the lower extremities is described. A time-resolved undersampled projection reconstruction (PR) acquisition was used to image the calf station during a first injection, and non-time-resolved PR acquisitions were used with the bolus-chase technique to image the abdomen and thigh stations during a second injection. The streak artifacts resulting from undersampling the PR data were reduced with the use of a spatial Fermi filter based on the sensitivity of each coil element in a peripheral vascular phased-array coil. This novel technique provided high spatial resolution and a broad range of coverage, and depicted the contrast dynamics in the most distal station of the lower extremities.
(Copyright 2004 Wiley-Liss, Inc.)
Databáze: MEDLINE
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