Inversion Group (IG) Fitting: A New T-1 Mapping Method for Modified Look-Locker Inversion Recovery (MOLLI) That Allows Arbitrary Inversion Groupings and Rest Periods (Including no Rest Period)

摘要

Purpose: The Modified Look-Locker Inversion Recovery (MOLLI) technique is used for T-1 mapping in the heart. However, a drawback of this technique is that it requires lengthy rest periods in between inversion groupings to allow for complete magnetization recovery. In this work, a new MOLLI fitting algorithm (inversion group [IG] fitting) is presented that allows for arbitrary combinations of inversion groupings and rest periods (including no rest period).