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Abstract #3359

Multi-echo Rational Golden Angle Propeller Sampling for T1-T2-T2*-FF Cardiac MR Multitasking

Lingceng Ma1,2, Hsu-Lei Lee3, Debiao Li3, Giles Roditi 2, Aleksandra Radjenovic 2, and Anthony Christodoulou1
1Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States, 2School of Cardiovascular & Metabolic Health, University of Glasgow, Glasgow, United Kingdom, 3Biomedical Imaging Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, United States

Synopsis

Keywords: New Trajectories & Spatial Encoding Methods, Cardiovascular, Quantitative myocardium MRI; Rational Golden Angle; Propeller Sampling

Motivation: To increase multi-echo sampling efficiency of T1-T2-T2*-FF (fat-fraction) Multitasking.

Goal(s): Integrate propeller encoding into the MR Multitasking framework and evaluate its performance for cardiac MRI.

Approach: Incoherent propeller sampling was achieved with a randomized pre-phase gradient and blip gradients between echoes before rotating by a propeller-specific rational golden angle approximation. This was tested on n = 4 healthy volunteers at 3T.

Results: Propeller and radial sampling showed no significant bias between measurements, and propeller produced higher SNR in T2* measurements.

Impact: Rational golden-angle propeller sampling efficiently covers multi-echo k-t space data and offers a foundation to further improve imaging efficiency

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Abstract

Keywords