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Abstract #3650

Directions or Averages? An Ablation Study for in vivo Cardiac DTI

Jaume Coll-Font1,2,3, Shi Chen1, Robert A Eder1, and Christopher T. Nguyen1,2,3
1Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Charlestown, MA, United States, 2Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States, 3Harvard Medical School, Boston, MA, United States

Recent advances in in vivo cardiac DTI have enabled rapid acquisition of the required diffusion weighted (DW) images. With the possibility of acquiring more DW images, it is not clear what is the best sampling strategy. Here we evaluate whether there are any differences between acquiring twice as many directions versus duplicating the number of repetitions. Our results indicate that it is marginally better to acquire multiple directions and that the loss of accuracy is produced by the reduction in the total number of DW images.

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