Abstract #3325

Comparison of Dual- and Tri-band Excitation for MS-CAIPIRINHA-accelerated First-Pass Myocardial Perfusion Imaging

Tobias Wech^1,2, Tina Urbanek^1,3, Andreas Max Weng¹, Daniel Stäb⁴, Peter Speier⁵, Thorsten Alexander Bley¹, and Herbert Köstler^1,2

¹Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany, ²Comprehensive Heart Failure Centre, University Hospital Würzburg, Würzburg, Germany, ³Fakultät Ingenieurwissenschaften, Hochschule für Technik und Wirtschaft des Saarlandes, Saarbrücken, Germany, ⁴The Centre for Advanced Imaging, The University of Queensland, Brisbane, Germany, ⁵Magnetic Resonance, Siemens Healthcare GmbH, Erlangen, Germany

MS-CAIPIRINHA is a valuable technique to extend the anatomical coverage in myocardial first-pass perfusion imaging. In our previous studies, dual-band excitation was applied in conjunction with three SR-prepared acquisition blocks per RR interval to obtain six 2D-slices with a temporal resolution of one heartbeat. Especially in obese patients, however, the SNR occasionally turned out to be marginal, ultimately complicating the assessment of perfusion defects. In this work, an according approach using tri-band RF excitation was tested with respect to potential SNR benefits.

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