Fig. 4
From: CT radiomics to differentiate between Wilms tumor and clear cell sarcoma of the kidney in children
Examples of image analysis. Figure A shows the placement of a circular region of interest on the renal vein contralateral to the mass for measuring CT values; Figure B shows the placement of a circular region of interest on the most obviously enhanced part of the tumor parenchyma for measuring CT values; Figures C and D show the presence of dilated peritumoral cysts (white arrows)