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Abstract #0609

In vivo STEAM and motion compensated spin echo diffusion tensor CMR in multiple cardiac phases: The effect of field strength

Andrew Scott1,2, Ke Wen1,2, Yaqing Luo1,2, Jiahao Huang1,3, Simon Gover1, Rajkumar Soundarajan1, Pedro F Ferreira1,2, Dudley J Pennell1,2, and Sonia Nielles-Vallespin1,2
1CMR Unit, The Royal Brompton Hospital, London, United Kingdom, 2National Heart and Lung Institute, Imperial College London, London, United Kingdom, 3Bioengineering, Imperial College London, London, United Kingdom

Synopsis

Keywords: Myocardium, Magnets (B0)

Motivation: Diffusion tensor cardiovascular magnetic resonance (DT-CMR) studies described in the literature have almost uniquely been performed at 3T while 1.5T scanners are more widely available.

Goal(s): To compare the performance and microstructural parameters available from stimulated echo (STEAM) and motion compensated spin echo (MCSE) DT-CMR sequences at 1.5T and 3T.

Approach: DT-CMR was performed in 20 healthy volunteers using both sequences at both field strengths at peak systole and end diastole.

Results: MCSE and STEAM sequences are effective at both 1.5T and 3T. STEAM benefits from the increased SNR available at 3T.

Impact: DT-CMR studies should consider making use of 1.5T hardware where access to 3T scanners is more difficult particularly where MCSE sequences are to be used with systolic triggering.

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Keywords