Fig. 2.

First-pass perfusion images (A), AIF and time-intensity curves (B) as well as resulting perfusion maps for 1RR and 2RR interval sampling in the same patient (C, D). The red region of interest represents the myocardium from which the myocardial time-intensity curves were generated. The dashed horizontal lines indicate the times between which the first-pass perfusion images in (A) were acquired. Note that the 2RR-sampled curve is a downsampling of the 1RR acquisition resulting in similar time-intensity curves (B, lower panel). Note the similarity between the resulting quantitative perfusion maps (C, D). 1RR: sampling every RR-interval, 2RR: sampling every other RR-interval, AIF: arterial input function.