Abstract #3147

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

Marshall Stephen Sussman^1,2 and Bernd Juergen Wintersperger^1,2

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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