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Motion correction of magnetic resonance images

  • US 6,518,759 B2
  • Filed: 04/09/2001
  • Issued: 02/11/2003
  • Est. Priority Date: 04/09/2001
  • Status: Expired due to Term
First Claim
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1. A method for acquiring a motion corrected image with a magnetic resonance imaging (MRI) system, the steps comprising:

  • a) acquiring a k-space data set by repeating an imaging pulse sequence with the MRI system to sample k-space as a series of k-space segments;

    b) reconstructing a series of tracking images from the corresponding series of acquired k-space segments;

    c) calculating the movement of point objects in the subject during the acquisition of each k-space segment by detecting the movement of corresponding point spread objects in each tracking image;

    d) calculating a corrective phase shift for each k-space segment based on the detected movement during the acquisition of each k-space segment; and

    e) reconstructing an image using the corrected k-space segments.

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