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Apparatus and method for radiosurgery

  • US 7,853,313 B2
  • Filed: 12/12/2006
  • Issued: 12/14/2010
  • Est. Priority Date: 06/11/2003
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • identifying a target in a patient;

    determining a respiratory motion of the target in the patient;

    determining a pulsating motion of the target in the patient separately from the determining of the respiratory motion, wherein determining the respiratory motion comprises;

    detecting a first motion of the target in the patient caused by a combined respiratory and pulsating motion of the patient while the patient breathes during a first period using one or more radiographic images of the target generated during the first period;

    detecting a second motion of the target in the patient caused substantially only by the pulsating motion while the patient holds a breath during a second period using one or more radiographic images of the target generated during the second period; and

    calculating the respiratory motion of the target in the patient using the detected first and second motions; and

    directing a radiosurgical beam, from a radiosurgical beam source, to the target in the patient based on the determining of the pulsating motion and based on the determining of the respiratory motion.

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