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Abstract #1829

Accelerated myocardial T1 mapping at low field

Charel Junior Mangama Sindzi1, Andrew Tyler1, Karl Phillip Kunze2, Charlotte Rogers1, Alexander Neofytou1, Li Huang3, Reza Razavi1, Amedeo Chiribiri1, and Sebastien Roujol1
1Cardiovascular Imaging Department, King's College London, London, United Kingdom, 2MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom, 3Neoscan Solutions GmbH, Magdeburg, Germany

Synopsis

Keywords: Quantitative Imaging, Acquisition Methods, Myocardium, MOLLI, FAST1, Low-field

Motivation: Myocardial T1 mapping has been successfully demonstrated at low field (0.55T) but only enable the acquisition of one slice per breathhold.

Goal(s): The aim of this study is to develop an accelerated myocardial T1 mapping method at 0.55T.

Approach: A modified FAST1 scheme is proposed for 0.55T where 3 slices are acquired in a 12s breathhold, using two inversion-recovery blocks per slice (with 2 images/block) and slice-selective inversion pulses.

Results: In comparison to a standard MOLLI sequence, the proposed low-field FAST1 scheme led to an acceleration factor of 3 with similar T1 times and improved T1 precision.

Impact: Accelerated myocardial T1 mapping with improved precision will reduce the duration of multi-slice myocardial T1 mapping protocol and may provide increase spatial coverage to existing protocol with limited slice coverage.

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Keywords