1. A computerized evaluation method for a series of image data sets of a region of an organism, comprising the steps: supplying a series of image data sets to a computerized processor that were acquired while a region of the organism represented by the image data sets moved dependent on breathing and heartbeat; in said processor, determining a first contour in the acquired image data sets that moved corresponding to the breathing-dependent movement of the acquired region of the organism; in said processor, elastically distorting the acquired image data sets into singly distorted image data sets to cause the first contours of the singly distorted image data sets to spatially correspond with one another; in said processor, determining a second contour in the acquired image data sets or in the singly distorted image data sets that moved corresponding to the heartbeat-dependent movement of the acquired region of the organism; in said processor, elastically distorting the singly distorted image data sets into doubly distorted image data sets to cause the second contours of the doubly distorted image data sets to spatially correspond with one another; and in said processor, evaluating regions of the doubly distorted image data sets that spatially correspond to one another across respective image data sets to generate an evaluation result, and making said evaluation result available in electronic form at an output of said processor.