Abstract #1497

Accelerating Free Breathing Motion-Corrected Late Gadolinium Enhancement Imaging Using Simultaneous Multi-Slice Imaging

Grzegorz Tomasz Kowalik¹, Karl Kunze^1,2, Filippo Bosio¹, Peter Speier³, Daniel Staeb^4,5, Radhouene Neji^1,2, Reza Razavi¹, Sohaib Nazir^1,6, Amedeo Chiribiri¹, and Sébastien Roujol¹

¹King's College London, London, United Kingdom, ²MR Research Collaborations, Siemens Healthcare Limited, Camberley, United Kingdom, ³Cardiovascular predevelopment, Siemens Healthcare GmbH, Erlangen, Germany, ⁴MR Research Collaborations, Siemens Healthcare Limited, Melbourne, Australia, ⁵Department of Radiology, The University of Melbourne, , Melbourne, Australia, ⁶Royal Brompton Hospital, London, United Kingdom

Synopsis

Keywords: Myocardium, Heart, LGE

Motivation: Free breathing motion-corrected late gadolinium enhancement (FB-MOCO-LGE) is commonly used for scar assessment in patients unable to breathhold. Reduction of FB-MOCO-LGE scan time will contribute reducing overall examination time and cost.

Goal(s): To evaluate the potential of simultaneous multi-slice (SMS) imaging in reducing FB-MOCO-LGE acquisition time while maintaining image quality.

Approach: To Implement a 2x SMS-bSSFP technique with phase-sensitive inversion recovery (PSIR) reconstruction. Evaluation of FB-MOCO-LGE and SMS FB-MOCO-LGE was conducted on 20 patients.

Results: The SMS approach demonstrated a significant two-fold reduction in acquisition time without compromising myocardial sharpness or signal-to-noise ratio and minimal impact on image quality.

Impact: SMS-enabled FB-MOCO-LGE enables halves acquisition time with minimal on image quality. Therefore, this approach show promise for reducing LGE protocol duration and cost of cardiac MRI examination.

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