Correction of distortions in the case of the diffusion-weighted magnetic resonance imaging

摘要

A process for the correction of image distortions, which in pictures of diffusion-weighted magnetic resonance - images of an examination subject (11), comprising the steps of:– Receiving a reference image (a) without diffusion weighting,– Receiving a first diffusion-weighted image (b '') for a diffusion,– Receiving a second diffusion-weighted image (b ") for the same direction of diffusion, wherein the recording of the second diffusion-weighted image in the case of a different diffusion weighting and / or a different diffusion gradient polarity than the receptacle of the first diffusion-weighted image,– Determining a first and a second set of equalization parameters (t''^–1, T '') for the correction of image distortions in the recorded diffusion-weighted images (b'', b ") by means of image registration,the first and second set of equalization parameters (t''^–1, T '') in this way are correlated, that the first set of equalization parameters by a transformation (t''^–1) is obtained, and that the second set of equalization parameters by a transformation inverse transformation (t '') is obtained,configured to be determined, and wherein the..