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High‐resolution multistation peripheral MR angiography using undersampled projection reconstruction imaging
Author(s) -
Du J.,
Korosec F.R.,
Thornton F.J.,
Grist T.M.,
Mistretta C.A.
Publication year - 2004
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20102
Subject(s) - undersampling , streak , image resolution , angiography , nuclear medicine , iterative reconstruction , computer science , medicine , radiology , physics , computer vision , optics
Abstract 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. Magn Reson Med 52:204–208, 2004. © 2004 Wiley‐Liss, Inc.