Frameless radiosurgery treatment system and method
First Claim
Patent Images
1. A system for directing a treatment beam towards an internal target region in a patient, comprising:
- a treatment bed configured to support the patient during a treatment;
a respiratory motion detection system configured to track a respiration cycle of the patient based on monitoring external patient motion;
one or more diagnostic beam generators configured to generate diagnostic beams directed towards the patient at one or more particular points of the respiration cycle during one or more occurrences of the respiration cycle, wherein the one or more particular points comprise less than an entirety of the respiration cycle, the one or more diagnostic beam generators being located at one or more predetermined positions, wherein at least one beam from the one or more diagnostic beam generators is at a predetermined non-zero angle with respect to additional beams of the one or more diagnostic beam generators;
an image recording device located opposite the one or more diagnostic beam generators configured to receive the diagnostic beams from the one or more diagnostic beam generators, wherein the image recording device is configured to capture intra-treatment images of the patient from the diagnostic beams;
a processor configured to compare the intra-treatment images to a pre-treatment image to determine a location of the internal target region at the one or more particular points of the respiration cycle; and
a treatment beam generator configured to energize the treatment beam at a distinct point of the respiration cycle during a distinct occurrence of the respiration cycle during the treatment.
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Abstract
A method and apparatus for selectively and accurately localizing and treating a target within a patient are provided. A three dimensional mapping of a region surrounding the target is coupled to a surgical intervention. Two or more diagnostic beams at a known non-zero angle to one another may pass through the mapping region to produce images of projections within the mapping region in order to accurately localize and treat the target wherein the images are captured using one or more image recorders.
229 Citations
25 Claims
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1. A system for directing a treatment beam towards an internal target region in a patient, comprising:
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a treatment bed configured to support the patient during a treatment; a respiratory motion detection system configured to track a respiration cycle of the patient based on monitoring external patient motion; one or more diagnostic beam generators configured to generate diagnostic beams directed towards the patient at one or more particular points of the respiration cycle during one or more occurrences of the respiration cycle, wherein the one or more particular points comprise less than an entirety of the respiration cycle, the one or more diagnostic beam generators being located at one or more predetermined positions, wherein at least one beam from the one or more diagnostic beam generators is at a predetermined non-zero angle with respect to additional beams of the one or more diagnostic beam generators; an image recording device located opposite the one or more diagnostic beam generators configured to receive the diagnostic beams from the one or more diagnostic beam generators, wherein the image recording device is configured to capture intra-treatment images of the patient from the diagnostic beams; a processor configured to compare the intra-treatment images to a pre-treatment image to determine a location of the internal target region at the one or more particular points of the respiration cycle; and a treatment beam generator configured to energize the treatment beam at a distinct point of the respiration cycle during a distinct occurrence of the respiration cycle during the treatment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for directing a treatment beam towards an internal target region in a patient, comprising:
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monitoring external movement of the patient to identify a respiration cycle of the patient; energizing one or more diagnostic beams from one or more positions at a particular point of the respiration cycle within a particular occurrence of the respiration cycle to determine a location of the internal target region during a treatment; generating a correlation model between locations of the internal target region and one or more points of the respiration cycle; and energizing the treatment beam over at least one of the particular point of the respiration cycle or an additional point of the respiration cycle during the particular occurrence of the respiration cycle or a subsequent occurrence of the respiration cycle based on the correlation model to treat the internal target region. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for directing a treatment beam towards an internal target region in a patient, comprising:
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means for generating a three-dimensional image of the patient prior to the treatment; means for determining a respiration cycle of the patient from external movement of the patient; means for energizing one or more diagnostic beams at a particular point of the respiration cycle during a particular occurrence of the respiration cycle to determine a position of the internal target region during a treatment; means for generating a correlation model between locations of the internal target region and one or more points of the respiration cycle; and means for energizing the treatment beam over at least one of the particular point of the respiration cycle or an additional point of the respiration cycle during the particular occurrence of the respiration cycle or a subsequent occurrence of the respiration cycle based on the correlation model to treat the internal target region. - View Dependent Claims (24, 25)
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Specification