Abstract #2548
Determination of trigger delays for strain independent cardiac diffusion measurements based on automated segmentation of cine images
Peter Speier 1 , Andreas Greiser 1 , Christoph Guetter 2 , and Marie-Pierre Jolly 2
1
Siemens AG Healthcare Sector, Erlangen,
Germany,
2
Imaging
and Computer Vision, Siemens Corporation, Corporate
Technology, Princeton, NJ, United States
Double-triggered stimulated-echo EPI with monopolar
diffusion encoding is a robust method for measuring
diffusion in the left ventricle of the heart. To
minimize contamination of diffusion results by cardiac
motion, encoding must take place at one of two strain
sweet spots, i.e., time points in the cardiac cycle
where cardiac strain assumes its average value. We
demonstrate that sweet spot positions of
left-ventricular blood volume-time curves, as determined
by automated segmentation algorithms, are in good
agreement with strain sweet spot positions of
mid-ventricular short axis slices, thus eliminating the
need for additional strain measurements and analysis for
measurement planning.
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