High-resolution multistation peripheral MR angiography using undersampled projection reconstruction imaging.
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.
Du
J
J
Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53792-3252, USA. jiang@mr.radiology.wisc.edu
Korosec
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Thornton
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Grist
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Mistretta
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D000005:Abdomen / Q000098:blood supply*; D016477:Artifacts; D003287:Contrast Media; D019786:Gadolinium DTPA; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007866:Leg / Q000098:blood supply*; D018810:Magnetic Resonance Angiography / Q000379:methods*
D003287:Contrast Media; C064925:gadodiamide; D019786:Gadolinium DTPA