Abstract #2035

Rapid cardiac diffusion-weighted imaging with novel motion-compensated spherical tensor encoding

Irvin Teh¹, Filip Szczepankiewicz^2,3,4, Erica Dall’Armellina¹, Sven Plein¹, Markus Nilsson², and Jürgen E. Schneider^1,5

¹Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom, ²Clinical Sciences, Lund University, Lund, Sweden, ³Harvard Medical School, Boston, MA, United States, ⁴Brigham and Women's Hospital, Boston, MA, United States, ⁵Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom

Cardiac diffusion-weighted imaging (CDWI) is an emerging method for non-invasive assessment of cardiac microstructure. In CDWI, averaging and triggering are routinely used to mitigate motion artefacts, which results in long acquisition times. We have developed a novel motion-compensated spherical tensor encoding technique that reduces the acquisition time by a factor of up to three. Quantitatively, the method yields similar mean diffusivity as conventional methods, but enables accurate measurements in less than a minute.

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