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METHOD OF DETECTION AND COMPENSATION FOR RESPIRATORY MOTION IN RADIOGRAPHY CARDIAC IMAGES SYNCHRONIZED WITH AN ELECTROCARDIOGRAM SIGNAL

  • US 20080240536A1
  • Filed: 03/25/2008
  • Published: 10/02/2008
  • Est. Priority Date: 03/27/2007
  • Status: Active Grant
First Claim
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1. A method for detecting and compensating for respiratory motion, the method comprising:

  • producing a 3D image of a patient'"'"'s heart by means of a 3D imaging system;

    recording an electrocardiogram at the same time as the 3D image is acquired;

    performing a segmentation of the 3D image;

    exposing the patient'"'"'s heart to radiation produced by a radiography imaging system;

    obtaining, through a detector, a succession of radiography images representing an internal structure of the heart;

    synchronizing the succession of acquired radiography images with the electrocardiogram;

    computing an initial registration between one of the radiography images and a re-projection of the 3D image;

    analyzing at least one part of the radiography images in order to highlight a respiratory motion therein;

    determining an additional respiratory registration linked to the respiration,making a fusion of the re-projected 3D image with radiography images in compensating for the respiratory motion of the radiography images with the additional registration; and

    displaying the fusion image on a viewing screen.

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