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Proceedings Paper

A field map estimation strategy without the noise-bandwidth tradeoff
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Paper Abstract

We propose a joint acquisition-processing solution to the problem of field map estimation. Our acquisition method captures data at three echo times carefully chosen to yield optimal field map estimation using the corresponding algorithm. We show that, over an arbitrary spectral range of inhomogeneity values, our method is not subject to the traditional noise-bandwidth tradeoff. The resulting implications include: improved robustness, enhanced spectral estimation and eliminating the need for spatial phase unwrapping. Our simulations show factors of improvement in the quality of field map estimates, as compared to existing methods. Our phantom data confirms these impressive gains.

Paper Details

Date Published: 24 February 2012
PDF: 7 pages
Proc. SPIE 8314, Medical Imaging 2012: Image Processing, 831449 (24 February 2012); doi: 10.1117/12.911026
Show Author Affiliations
Joseph Dagher, Massachusetts General Hospital (United States)
Harvard Medical School (United States)
Ali Bilgin, The Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 8314:
Medical Imaging 2012: Image Processing
David R. Haynor; Sébastien Ourselin, Editor(s)

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