Patent ID: 9632162
Date: 2017-04-25
CPC Classifications: G01R

Claim:
1. An apparatus for correcting distortion in medical images, comprising processing circuitry configured to: receive echo-planar image data (EPI image data), diffusion-weighted image data (DWI image data) and further medical image data, wherein the EPI image data and the DWI image data are generated by magnetic resonance imaging (MRI) scanning, wherein the EPI image data has an echo-planar imaging distortion (EPI distortion) and the DWI image data has the EPI distortion and a motion-probing gradient distortion (MPG distortion), wherein the EPI distortion and the MPG distortion are cumulative; determine a representation of the EPI distortion by comparing the EPI image data to the further medical image data, and determine a representation of the MPG distortion in the absence of the EPI distortion; correct the MPG distortion in the DWI image data using the representation of the EPI distortion and the representation of the MPG distortion; and display or store the corrected DWI image data.