Click on image to view larger version.
Figure 1. (a) A maximum intensity projection (MIP) image highlighting moderate (category 2, 31-70%) right renal artery stenosis (RAS) and severe (category 3, 71-100%) left RAS, together with (b) a representative central slice of a post-contrast (early venous phase) dataset. (c) The signal intensity threshold technique and associated region of interest (ROI) selection is illustrated, where the cortical volume is calculated using pixel counting. (d) The final reconstructed volume is highlighted, where the right kidney is relatively enlarged (226.1 cm3) and the left kidney is relatively small (77.4 cm3).
