Biondetti, E;
Karsa, A;
Thomas, DL;
Shmueli, K;
(2017)
Evaluating the Accuracy of Susceptibility Maps Calculated from Single-echo versus Multi-echo Gradient-echo Acquisitions.
In:
Proceedings of the ISMRM 25th Annual Meeting & Exhibition.
International Society for Magnetic Resonance in Medicine (ISMRM): Honolulu, HI, USA.
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Abstract
For Susceptibility Mapping (SM), Laplacian-based methods (LBMs) can be used on single- or multi-echo gradient echo phase data. Previous studies have shown the advantage of using multi-echo versus single-echo data for noise reduction in susceptibility-weighted images and simulated data. Here, using simulated and acquired images, we compared the performance of two SM pipelines that used multi- or single-echo phase data and LBMs. We showed that the pipeline that fits the multi-echo data over time first and then applies LBMs gives more accurate local fields and $$$\chi$$$ maps than the pipelines that apply LBMs to single-echo phase data.
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