Abstract #2875
Characterization of high performance human gradient system for spin echo cardiac DTI
Konrad Schieban 1 , Timothy G Reese 2 , Christian T Stoeck 1 , David E Sosnovik 2 , Sebastian Kozerke 1,3 , and Choukri Mekkaoui 2
1
Institute for Biomedical Engineering, ETH
Zurich, Zurich, Switzerland,
2
Radiology,
Harvard Medical School, Massachusetts General Hospital,
Martinos Center for Biomedical Imaging, Charlestown, MA,
United States,
3
Division
of Imaging Sciences, King's College London, London,
United Kingdom
Large gradient amplitudes in cardiac spin echo DTI are
desirable, since they allow gradient pulses to be short
while still providing appropriate diffusion sensitivity.
However, it is unclear if the benefit of motion
robustness is offset by larger eddy currents which are
increasingly influential at high field strengths. In
this work, the impact of motion on the diffusion tensor
is analyzed at 80mT/m and 150mT/m and compared with the
impact of eddy currents which have been measured on the
Siemens MAGNETOM Skyra CONNECTOM. Furthermore, geometric
distortions due to eddy currents are demonstrated in
phantom experiments.
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