Journal article
Design of k-Space Channel Combination Kernels and Integration with Parallel Imaging
Magnetic resonance in medicine, Vol.71(6), pp.2139-2154
06/01/2014
DOI: 10.1002/mrm.24883
PMCID: PMC4240256
PMID: 23943602
Abstract
PurposeIn this work, a new method is described for producing local k-space channel combination kernels using a small amount of low-resolution multichannel calibration data. Additionally, this work describes how these channel combination kernels can be combined with local k-space unaliasing kernels produced by the calibration phase of parallel imaging methods such as GRAPPA, PARS and ARC.
MethodsExperiments were conducted to evaluate both the image quality and computational efficiency of the proposed method compared to a channel-by-channel parallel imaging approach with image-space sum-of-squares channel combination.
ResultsResults indicate comparable image quality overall, with some very minor differences seen in reduced field-of-view imaging. It was demonstrated that this method enables a speed up in computation time on the order of 3-16X for 32-channel data sets.
ConclusionThe proposed method enables high quality channel combination to occur earlier in the reconstruction pipeline, reducing computational and memory requirements for image reconstruction. Magn Reson Med 71:2139-2154, 2014. (c) 2013 Wiley Periodicals, Inc.
Details
- Title: Subtitle
- Design of k-Space Channel Combination Kernels and Integration with Parallel Imaging
- Creators
- Philip J. Beatty - Sunnybrook Research InstituteShaorong ChangJames H. HolmesKang WangAnja C. S. BrauScott B. Reeder - University of Wisconsin–MadisonJean H. Brittain
- Resource Type
- Journal article
- Publication Details
- Magnetic resonance in medicine, Vol.71(6), pp.2139-2154
- DOI
- 10.1002/mrm.24883
- PMID
- 23943602
- PMCID
- PMC4240256
- NLM abbreviation
- Magn Reson Med
- ISSN
- 0740-3194
- eISSN
- 1522-2594
- Publisher
- Wiley
- Number of pages
- 16
- Grant note
- R01 DK083380; R01 DK088925; RC1 EB010384; R01 DK096169 / National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA RC1EB010384 / 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) R01DK088925 / NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Diabetes & Digestive & Kidney Diseases (NIDDK)
- Language
- English
- Date published
- 06/01/2014
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology
- Record Identifier
- 9984295025002771
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