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Improved IDQC reconstruction for inhomogeneity corrected MR spectroscopy | IEEE Conference Publication | IEEE Xplore

Improved IDQC reconstruction for inhomogeneity corrected MR spectroscopy


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 m...Show More

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.
Date of Conference: 14-17 May 2008
Date Added to IEEE Xplore: 13 June 2008
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Conference Location: Paris, France

References

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