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Reduction of distortions in MRSI using a new signal model | IEEE Conference Publication | IEEE Xplore

Reduction of distortions in MRSI using a new signal model


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...Show More

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 lscr1-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.
Date of Conference: 28 June 2009 - 01 July 2009
Date Added to IEEE Xplore: 07 August 2009
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Conference Location: Boston, MA, USA

References

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