Fig. 2

Overview diagram of “dual”-sequence for multi-slice 2D saturation recovery. The low resolution AIF image is acquired at the R-wave triggered followed by multiple full resolution myocardial perfusion images. Each image has a saturation recovery RF preparation consisting of a sequence of RF pulses and gradient spoilers followed by single shot image readout. The myocardial perfusion images have an optional chemical shift fat saturation. The AIF uses a FLASH readout, whereas the full resolution myocardial images may be either b-SSFP or FLASH. The AIF is acquired for a single slice every RR interval, whereas the myocardial perfusion images may be sampled every RR or every other RR interval to increase the overall number of slices. TD and TS are the trigger delay and saturation time, respectively