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Abstract #3147

Modified Look-Locker Inversion Recovery (MOLLI) $$$T_1$$$ Mapping with High Precision Composite Inversion Group (IG) Fitting

Marshall Stephen Sussman1,2 and Bernd Juergen Wintersperger1,2

1Medical Imaging, University Health Network, Toronto, ON, Canada, 2Medical Imaging, University of Toronto, Toronto, ON, Canada

The MOLLI $$$T_1$$$ mapping technique has been used to characterize a variety of cardiac pathologies. However, a significant limitation of this technique is the requirement for rest periods between inversion groups. This increases scan time, and limits the choice of possible inversion groups. A new technique, inversion group (IG) MOLLI fitting, has been recently shown to eliminate the requirement for rest periods, and permits complete flexibility of inversion group selection. However, a significant limitation of this technique is that the resulting $$$T_1$$$ maps have low precision. In this study, a method is presented for high precision IG fitting.

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