Journal article
Correction of field inhomogeneity effects on limited k-space MRSI data using anatomical constraints
Conference proceedings (IEEE Engineering in Medicine and Biology Society. Conf.), Vol.2010, pp.883-886
01/01/2010
DOI: 10.1109/IEMBS.2010.5627873
PMID: 21097201
Abstract
Magnetic field inhomogeneity is a long-standing problem in magnetic resonance imaging (MRI) and spectroscopic imaging (MRSI). Specifically, in MRSI, field inhomogeneity, if not corrected, can cause frequency shifts, line broadening, and lineshape distortions in the spectral peaks. This paper addresses the problem of correcting the field inhomogeneity effects on limited k-space MRSI data. A penalized maximum-likelihood method is proposed, which enables the use of anatomical constraints for improving the correction performance with only limited k-space data. Simulation results are shown to demonstrate the effectiveness of the proposed method.
Details
- Title: Subtitle
- Correction of field inhomogeneity effects on limited k-space MRSI data using anatomical constraints
- Creators
- Xi Peng - Wuhan UniversityHien Nguyen - University of Illinois Urbana-ChampaignJustin Haldar - University of Illinois Urbana-ChampaignDiego Hernando - University of Illinois Urbana-ChampaignXian-Pei WangZhi-Pei Liang - University of Illinois Urbana-Champaign
- Resource Type
- Journal article
- Publication Details
- Conference proceedings (IEEE Engineering in Medicine and Biology Society. Conf.), Vol.2010, pp.883-886
- DOI
- 10.1109/IEMBS.2010.5627873
- PMID
- 21097201
- eISBN
- 1424441242; 9781424441242
- ISSN
- 1557-170X
- eISSN
- 1558-4615
- Grant note
- P41-EB-00197 / NIBIB NIH HHS P41-RR-02395 / NCRR NIH HHS
- Language
- English
- Date published
- 01/01/2010
- Academic Unit
- Radiology
- Record Identifier
- 9984446532102771
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