| Accelerated phase-contrast cine MRI using k-t SPARSE-SENSE. | |
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MedLine Citation:
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PMID: 22083998 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Phase-contrast (PC) cine MRI is a promising method for assessment of pathologic hemodynamics, including cardiovascular and hepatoportal vascular dynamics, but its low data acquisition efficiency limits the achievable spatial and temporal resolutions within clinically acceptable breath-hold durations. We propose to accelerate PC cine MRI using an approach which combines compressed sensing and parallel imaging (k-t SPARSE-SENSE). We validated the proposed 6-fold accelerated PC cine MRI against 3-fold accelerated PC cine MRI with parallel imaging (generalized autocalibrating partially parallel acquisitions). With the programmable flow pump, we simulated a time varying waveform emulating hepatic blood flow. Normalized root mean square error between two sets of velocity measurements was 2.59%. In multiple blood vessels of 12 control subjects, two sets of mean velocity measurements were in good agreement (mean difference = -0.29 cm/s; lower and upper 95% limits of agreement = -5.26 and 4.67 cm/s, respectively). The mean phase noise, defined as the standard deviation of the phase in a homogeneous stationary region, was significantly lower for k-t SPARSE-SENSE than for generalized autocalibrating partially parallel acquisitions (0.05 ± 0.01 vs. 0.19 ± 0.06 radians, respectively; P < 0.01). The proposed 6-fold accelerated PC cine MRI pulse sequence with k-t SPARSE-SENSE is a promising investigational method for rapid velocity measurement with relatively high spatial (1.7 mm × 1.7 mm) and temporal (∼35 ms) resolutions. |
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Authors:
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Daniel Kim; Hadrien A Dyvorne; Ricardo Otazo; Li Feng; Daniel K Sodickson; Vivian S Lee |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2011-11-14 |
Journal Detail:
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Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: 67 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-03-16 Completed Date: 2012-07-19 Revised Date: 2013-05-23 |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
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Languages: eng Pagination: 1054-64 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Wiley Periodicals, Inc. |
Affiliation:
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Department of Radiology, New York University School of Medicine, New York, NY, USA. kimd10@nyumc.org |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Algorithms Blood Flow Velocity Cardiac-Gated Imaging Techniques Computer Simulation Female Humans Image Enhancement / methods Image Processing, Computer-Assisted / methods Liver / blood supply* Magnetic Resonance Imaging, Cine / instrumentation, methods* Male Phantoms, Imaging |
| Grant Support | |
ID/Acronym/Agency:
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R01 DK088375-02/DK/NIDDK NIH HHS; R01 EB000447/EB/NIBIB NIH HHS; R01 EB000447-10/EB/NIBIB NIH HHS; R01-DK069373/DK/NIDDK NIH HHS; R01-EB000447-07A1/EB/NIBIB NIH HHS; R01-HL092439/HL/NHLBI NIH HHS |
| Comments/Corrections | |
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