Conference proceeding
Improved IDQC reconstruction for inhomogeneity corrected MR spectroscopy
2008 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, pp.468-471
05/2008
DOI: 10.1109/ISBI.2008.4541034
Abstract
In this paper, we focus on the reconstruction of iDQC MR spectroscopy data. Unlike standard 1-D MR spectroscopy schemes, iDQC acquires 2-D spectral data to decouple the magnetic field inhomogeneity effects from chemical shift information. This method suffers from a few limitations such as low intrinsic SNR, long acquisition time and the presence of a strong residual water peak. The standard IFFT based reconstruction schemes that rely on uniform sampling patterns have limited ability to overcome these problems. We propose a novel reconstruction scheme that employs a non-uniform sampling pattern, based on a flexible partitioning of the 2-D data-space. This approach enables the reconstruction of the metabolite region with a good resolution and signal to noise ratio, without being affected by aliases from the residual water signals. We pose the reconstruction problem as a conjugate gradient optimization. Using phantom data, we illustrate the significantly improved performance of the new method.
Details
- Title: Subtitle
- Improved IDQC reconstruction for inhomogeneity corrected MR spectroscopy
- Creators
- Rohini Shankar - Dept. of Biomed. Eng., Rochester Univ., Rochester, NYTianliang GuJianhui ZhongMathews Jacob
- Resource Type
- Conference proceeding
- Publication Details
- 2008 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, pp.468-471
- Publisher
- IEEE
- DOI
- 10.1109/ISBI.2008.4541034
- ISSN
- 1945-7928
- eISSN
- 1945-8452
- Language
- English
- Date published
- 05/2008
- Academic Unit
- Electrical and Computer Engineering; Roy J. Carver Department of Biomedical Engineering; Radiology; Iowa Neuroscience Institute; Radiation Oncology
- Record Identifier
- 9984070203702771
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