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Abstract #3761

Comparing FLASH vs GRE for 2D cardiac MR fingerprinting

Gastao Cruz1, Olivier Jaubert1, Aurelien Bustin1, Torben Schneider2, Peter Koken3, Mariya Doneva3, René M. Botnar1, and Claudia Prieto1
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2Philips Healthcare, Guildford, United Kingdom, 3Philips Research Hamburg, Hamburg, Germany

2D Cardiac Magnetic Resonance Fingerprinting (cMRF) has been previously proposed to provide co-registered T1/T2 maps from a single breath-hold scan. Gradient Spoiled gradient echo (GRE) readout is conventionally employed for 2D cMRF. RF-spoiled readouts (FLASH) have reduced signal-to-noise ratio but are less sensitive to field inhomogeneities that may bias the parametric maps (if not encoded in the MRF sequence). Here we compare the performance of FLASH and GRE readouts for simultaneous T1/T2 mapping in 2D cMRF. Phantom and in-vivo results showed that both sequences produce comparable maps and reproducible values, however GRE-cMRF presented larger underestimations for T1 and T2.

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