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REDUCING ARTEFACTS IN MRI IMAGE DATA

  • US 20150080704A1
  • Filed: 09/19/2013
  • Published: 03/19/2015
  • Est. Priority Date: 09/19/2013
  • Status: Active Grant
First Claim
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1. A computer-implemented method for reducing artefacts in an MRI image as a result of radiation induced current in collector coils of an MRI apparatus, the method comprising:

  • selecting a plurality of pixels in a k-space image prior to generation of the MRI image;

    analysing each of the plurality of selected pixels to determine whether a pixel intensity is greater than a predefined global threshold;

    for each pixel having pixel intensity greater than the predefined global threshold, determining whether the pixel lies within a signal region of the k-space image or outside of the signal region of the k-space image;

    for each pixel that lies outside of the signal region, modifying the pixel intensity to be similar to a background pixel intensity, thereby creating a modified k-space image; and

    generating the MRI image based on the modified k-space image.

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