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Magnetic resonance image correction method and magnetic resonance imaging apparatus using the same

  • US 6,076,004 A
  • Filed: 09/05/1996
  • Issued: 06/13/2000
  • Est. Priority Date: 09/05/1995
  • Status: Expired due to Term
First Claim
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1. A method for magnetic resonance image correction comprising the steps of:

  • subjecting a reference magnetic resonance T2 image and a second magnetic resonance T2 * image to a fast Fourier transform;

    calculating a cross-correlation between the reference magnetic resonance T2 * image and the second magnetic resonance T2 * image,calculating scale and rotation correction values for the second magnetic resonance T2 * image comprising scale and rotation deviation values of said second magnetic resonance T2 * image relative to said reference magnetic resonance T2 * image,correcting said second magnetic resonance T2 * image using the scale and rotation correction values to produce a scale/rotation-corrected second magnetic resonance T2 * image,subjecting the scale/rotation-corrected second magnetic resonance T2 * image to a fast Fourier transform,calculating a cross-correlation between the reference magnetic resonance T2 * image and the scale/rotation-corrected second magnetic resonance T2 * image,calculating a position correction value for the scale/rotation-corrected second magnetic resonance T2 * image comprising a position deviation value of the scale/rotation-corrected second magnetic resonance T2 * image relative to the reference magnetic resonance T2 * image, andcorrecting the scale/rotation-corrected second magnetic resonance T2 * image using the position correction value to produce a position-corrected second magnetic resonance T2 * image.

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