Patent ID: 6076004
Filing Date: 2000-06-13
Classification: A61B,G01R,Y10S

Abstract:
A method for magnetic resonance image correction comprising the steps of:subjecting a reference magnetic resonance T.sub.2 image and a second magnetic resonance T.sub.2 * image to a fast Fourier transform;calculating a cross-correlation between the reference magnetic resonance T.sub.2 * image and the second magnetic resonance T.sub.2 * image,calculating scale and rotation correction values for the second magnetic resonance T.sub.2 * image comprising scale and rotation deviation values of said second magnetic resonance T.sub.2 * image relative to said reference magnetic resonance T.sub.2 * image,correcting said second magnetic resonance T.sub.2 * image using the scale and rotation correction values to produce a scale/rotation-corrected second magnetic resonance T.sub.2 * image,subjecting the scale/rotation-corrected second magnetic resonance T.sub.2 * image to a fast Fourier transform,calculating a cross-correlation between the reference magnetic resonance T.sub.2 * image and the scale/rotation-corrected second magnetic resonance T.sub.2 * image,calculating a position correction value for the scale/rotation-corrected second magnetic resonance T.sub.2 * image comprising a position deviation value of the scale/rotation-corrected second magnetic resonance T.sub.2 * image relative to the reference magnetic resonance T.sub.2 * image, andcorrecting the scale/rotation-corrected second magnetic resonance T.sub.2 * image using the position correction value to produce a position-corrected second magnetic resonance T.sub.2 * image.