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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Proc IEEE Inst Electr Electron Eng. 2019 Sep 11;108(1):69–85. doi: 10.1109/JPROC.2019.2936998

Fig. 6.

Fig. 6.

Schematic of the cardiac MRF pulse sequence (only the first four out of sixteen heartbeats are shown for clarity). Each heartbeat consists of a fixed trigger delay (TD). This is followed by an inversion pulse (INV) or T2 preparation (T2P) for some heartbeats. Next imaging data are collected with variable flip angles during a 255ms acquisition window (ACQ), which is placed near the end of the cardiac cycle. The time between two successive acquisition windows is denoted by the RR interval.