In-vivo II. a) Original perfusion image with a DRA located in the anterior region of the subendocardium. b) Image a shifted 0.875 pixel length in the vertical direction. c) Image a shifted 0.375 pixel length in the vertical direction (half-pixel difference from b). Image b corresponds to the shift with the most prominent artifact, and image c the shift with the biggest DRA reduction. Images d-f, and g-i show the post-FFT and pre-FFT interpolations of images a-c. Figure 5 a-c in the bottom, also show the measured peak artifact signal loss in the region pointed by the arrows.