Figure 4b. (a) Bar graph shows that for high-spatial-resolution small-FOV MR angiography (white bars), depiction of the segmental renal arteries was adequate or more than adequate for diagnosis in 19 (76%) of 25 of the patients. Segmental arteries were depicted adequately at only four (17%) of 23 of the large-FOV MR angiographic examinations (gray bars). (b) Bar graph shows that degradation of image quality for segmental renal arterial depiction owing to motion is nearly identical for high-spatial-resolution small-FOV MR angiography (white bars) and large-FOV MR angiography (gray bars). Motion degradation is not visible or is minimal in more than 80% of patients.