The invention relates to elements of a method (1) for determining a damage characteristic value of a kidney (2). Images comprising the kidney (2) and the kidney artery (3) are entered into the method (1), from a three-dimensional digital subtraction angiography which is carried out by administering a contrast medium at the proximal end of the kidney artery (3) and comprises a fill run and a mask run, said method (1) comprising the following method steps: S1) determining a parenchymal blood volume into which the subtractions from images of the fill run and the mask run of the three-dimensional digital subtraction angiography are entered, additionally determining an arterial input function and normalizing the parenchymal blood volume with said arterial input function; S2) segmenting the kidney (2), determining an average normalized parenchymal blood volume value, and determining a total value of the parenchymal blood volume into which the normalized parenchymal blood volume values of the segmentation of the kidney (2) are entered; S3) receiving an average normalized parenchymal blood volume normal value and a total normal value for a parenchymal blood volume, and determining at least one damage characteristic value of the kidney (2) into which the average normalized parenchymal blood volume value and the average normalized parenchymal blood volume normal value and/or the total value of the parenchymal blood volume and the total normal value of a parenchymal blood volume are entered; S4) issuing the at least one damage characteristic value of the kidney (2).