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Abstract #3613

Cardiac DTI with spiral readouts with third order k-space correction but without inner volume excitation

Lars Mueller1, Sam Coveney1, Maryam Afzali1,2, Irvin Teh1, Fabrizio Fasano3,4, Filip Szczepankiewicz5, Erica Dall’Armellina1, Christopher Nguyen6, Derek K Jones2, and Jurgen E Schneider1
1Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom, 2Cardiff University Brain Research Imaging Centre (CUBRIC), Cardiff University, Cardiff, United Kingdom, 3Siemens Healthcare Ltd, Camberly, United Kingdom, 4Siemens Healthcare GmbH, Erlangen, Germany, 5Medical Radiation Physics, Clinical Sciences Lund, Lund University, Lund, Sweden, 6Cleveland Clinic, Cleveland, OH, United States

Synopsis

Keywords: Pulse Sequence Design, Diffusion Tensor Imaging, Spiral

Using spiral trajectories instead of EPI can reduce the echo time in diffusion weighted MRI. The feasibility of spiral trajectories for cardiac DTI has recently been demonstrated, but the larger object size (i.e torso vs. for example skull) may require an inner volume excitation to keep the readout at an useable duration. Here we examine the use of an undersampled spiral with SENSE reconstruction and standard slice selective pulses. We show that MD and FA derived from the slice selective and inner volume excitation yield comparable values with the MD being higher than the one measured with EPI.

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Keywords