| 摘要 |
In order to compare a left and a right half of the brain of a patient on the basis of medical 2D or 3D image data records for determining the perfusion, the brain of the patient is subdivided into brain regions, wherein the number of brain regions is an even number n, a number n/2 of the brain regions being arranged in the right half of the brain and a number n/2 of the brain regions being arranged in the left half of the brain, with each of the brain regions arranged in the right half of the brain being unambiguously assigned to a brain region arranged in the left half of the brain, and the brain being subdivided by planes standing perpendicularly on a median sagittal plane. In at least one embodiment, the image data records are segmented, wherein brain image data records are generated which only include those picture elements of the image data records which represent the brain of the patient. In at least one embodiment, n partial image data records are determined in each of the brain image data records, wherein an m-th partial image data record only include those picture elements of the respective brain image data record, which represent an m-th of the n brain regions, with m=1 . . . n. In at least one embodiment, one or more characteristic values are calculated per m-th brain region by evaluating all m-th partial image data records according to a prescribed evaluation method. Finally, in at least one embodiment, the characteristic values of brain regions unambiguously assigned to one another are evaluated according to predetermined criteria for comparing the right and left half of the brain.
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