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Fig. 4 —51-year-old woman with suspected coronary artery disease. Image shows motion range for right coronary artery (RCA) during cardiac cycle. Image reconstructions were performed at 0%, 40%, and 80% of R-R interval and show identical orientation of 3D images in upper row and identical levels of images in middle row. In lower row, level that best displayed origin of RCA is displayed. Note large amount of motion of RCA during cardiac cycle. Note that RCA is displayed sharply at 80% of R-R interval, but not at 0% and 40% time phases. Mean heart rate was 52 beats per minute. R-R interval during acquisition varied between 1,095 and 1,189 milliseconds.