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Abstract #1848

Myocardium Tissue DTI with Stimulated Echo at Large Susceptibility Induced B0 gradients: Examination of the Shimming Strategies Efficiency and Errors.

Maxim Terekhov1, David Lohr1, and Laura Maria Schreiber1

1Comprehensive Heart Failure Center, University Hospital Wuerzburg, Wuerzburg, Germany

In this paper, we investigated experimentally and statistically the effect of distortions of myocardium DTI with STEAM-EPI due to susceptibility induced gradients varied in a range of factor 10 to 20 to the reference. The special focus was given to examining the effect of prolonged EPI-readout, B0-shimming effect and motion-induced shimming errors relevant for high-resolution DTI in-vivo. Fresh ex-vivo pig hearts were used for DTI measurements with an in-house developed STEAM-EPI sequence. The distribution of diffusion directions components was found well preserved for prolonged readout even at high internal gradient.

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