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Abstract #3114

Second-order motion-compensated spin echo diffusion tensor imaging of the in vivo human heart – considerations on gradient performance requirements

Christian T Stoeck1,2, Constantin von Deuster1,2, and Sebastian Kozerke1,2

1King's College London, London, United Kingdom, 2University and ETH Zurich, Zurich, Switzerland

In vivo cardiac DTI using spin-echoes has been demonstrated on MR systems equipped with powerful gradients. In this study we investigate the dependency of helix and transverse angle error on maximum gradient amplitude for second order motion compensated diffusion encoding of the in-vivo heart. Root-mean-square errors for helix and transverse angles were 15.0±3.7°, 11.0±1.8°, 10.3±2.4°, and 11.7±3.8°, 9.0±2.0°, 8.1±2.2° for gradient strengths of 30mT/m, 40mT/m and 60mT/m when compared to data obtained at 74.5 mT/m gradient strength. From the data it is concluded that second order motion compensated diffusion encoding allows for in vivo cardiac DTI even on MR systems with standard gradient amplitudes of 40 mT/m.

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