Conference proceeding
Reduction of distortions in MRSI using a new signal model
2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, pp.438-441
06/2009
DOI: 10.1109/ISBI.2009.5193078
Abstract
We propose a new reconstruction scheme for magnetic resonance spectroscopic imaging (MRSI) signal based on minimizing the spatial total variation (TV) integrated with the lscr 1 -norm of the spectral data. Furthermore, we propose to represent the MRSI signal as a linear combination of polynomials and spikes to capture the baseline and metabolite peaks. The proposed signal model provides a sparser representation of the spectral data, which enables us to suppress the field inhomogeneity induced line shape distortions and losses as well as reduce noise. We also take advantage of high resolution field map and anatomical prior derived from additional 3-D MRI scan to model system imperfections.
Details
- Title: Subtitle
- Reduction of distortions in MRSI using a new signal model
- Creators
- R Eslami - Dept. of Biomed. Eng., Univ. of Rochester, Rochester, NY, USAM Jacob - Dept. of Biomed. Eng., Univ. of Rochester, Rochester, NY, USA
- Resource Type
- Conference proceeding
- Publication Details
- 2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, pp.438-441
- Publisher
- IEEE
- DOI
- 10.1109/ISBI.2009.5193078
- ISSN
- 1945-7928
- eISSN
- 1945-8452
- Language
- English
- Date published
- 06/2009
- Academic Unit
- Electrical and Computer Engineering; Roy J. Carver Department of Biomedical Engineering; Radiology; Radiation Oncology; Iowa Neuroscience Institute
- Record Identifier
- 9984070431602771
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