Journal article
Interleaved Variable Density Sampling With a Constrained Parallel Imaging Reconstruction for Dynamic Contrast-Enhanced MR Angiography
Magnetic resonance in medicine, Vol.66(2), pp.428-436
08/01/2011
DOI: 10.1002/mrm.22814
PMCID: PMC3552437
PMID: 21360740
Abstract
For MR applications such as contrast-enhanced MR angiography, it is desirable to achieve simultaneously high spatial and temporal resolution. The current clinical standard uses view-sharing methods combined with parallel imaging; however, this approach still provides limited spatial and temporal resolution. To improve on the clinical standard, we present an interleaved variable density (IVD) sampling method that pseudorandomly undersamples each individual frame of a 3D Cartesian k(y)-k(z) plane combined with parallel imaging acceleration. From this dataset, time-resolved images are reconstructed with a method that combines parallel imaging with a multiplicative constraint. Total acceleration factors on the order of 20 are achieved for contrast-enhanced MR angiography of the lower extremities, and improvements in temporal fidelity of the depiction of the contrast bolus passage are demonstrated relative to the clinical standard. Magn Reson Med 66:428-436, 2011. (C) 2011 Wiley-Liss, Inc.
Details
- Title: Subtitle
- Interleaved Variable Density Sampling With a Constrained Parallel Imaging Reconstruction for Dynamic Contrast-Enhanced MR Angiography
- Creators
- Kang Wang - University of Wisconsin–MadisonReed F. BusseJames H. HolmesPhilip J. BeattyJean H. BrittainChristopher J. Francois - University of Wisconsin–MadisonScott B. Reeder - University of Wisconsin–MadisonJiang Du - University of California San DiegoFrank R. Korosec - University of Wisconsin–Madison
- Resource Type
- Journal article
- Publication Details
- Magnetic resonance in medicine, Vol.66(2), pp.428-436
- DOI
- 10.1002/mrm.22814
- PMID
- 21360740
- PMCID
- PMC3552437
- NLM abbreviation
- Magn Reson Med
- ISSN
- 0740-3194
- eISSN
- 1522-2594
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- NIH-R01 EB006882 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA AHA-0865146F / American Heart Association (AHA); American Heart Association R01EB006882 / NATIONAL INSTITUTE OF BIOMEDICAL IMAGING AND BIOENGINEERING; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Biomedical Imaging & Bioengineering (NIBIB)
- Language
- English
- Date published
- 08/01/2011
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology
- Record Identifier
- 9984295028502771
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