Patent ID: 8487617
Filing Date: 2013-07-16
Classification: G01R

Abstract:
1. A method to reduce distortions in magnetic resonance diffusion imaging, comprising the steps of: operating a magnetic resonance data acquisition unit to implement a first measurement with a first diffusion weighting to obtain magnetic resonance data from a plurality of slices of an examination subject that are spatially separated from each other; operating said magnetic resonance data acquisition unit to implement at least one second measurement with a second diffusion weighting to acquire magnetic resonance data from a plurality of slices of the examination subject that are spatially separated from each other; supplying the magnetic resonance data obtained in said at least one first measurement and said at least one second measurement to a computerized processor and, in said computerized processor automatically determining a distortion correction function and distortion correction parameters to distortion-correct diffusion-weighted magnetic resonance images reconstructed from said magnetic resonance data obtained in said at least one first measurement and said at least one second measurement, and electronically linking at least one of the magnetic resonance data and the correction parameters of different slices with each other; and in said computerized processor, distortion-correcting said diffusion-weighted magnetic resonance images using said distortion correction function and said distortion correction parameters.