Frameless radiosurgery treatment system and method
First Claim
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1. A system for treating a target region by directing a treatment beam towards the target region, comprising:
- a treatment beam generator for generating a radiosurgical treatment beam;
one or more diagnostic x-ray beam generators for generating during treatment a plurality of diagnostic beams, each diagnostic beam being directed towards and through the target region, each diagnostic beam being generated from a different position so each diagnostic beam passes through the target region at a predetermined non-zero angle with respect to each other;
at least one imagining device for receiving each the plurality of diagnostic beams after each diagnostic beam has passed through the target region, and for generating a 2-D diagnostic image of the target region from each received diagnostic beam; and
a processor for synthesizing a relatively low clarity intra treatment 3-D image of the target region from said plurality of 2-D diagnostic images, and for comparing said synthesized 3-D image with a relatively high clarity pre-operative three-dimensional CT scan image to determine the position of the target region, so that said radiosurgical treatment beam can be continuously focused onto the target region.
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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.
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Citations
21 Claims
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1. A system for treating a target region by directing a treatment beam towards the target region, comprising:
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a treatment beam generator for generating a radiosurgical treatment beam;
one or more diagnostic x-ray beam generators for generating during treatment a plurality of diagnostic beams, each diagnostic beam being directed towards and through the target region, each diagnostic beam being generated from a different position so each diagnostic beam passes through the target region at a predetermined non-zero angle with respect to each other;
at least one imagining device for receiving each the plurality of diagnostic beams after each diagnostic beam has passed through the target region, and for generating a 2-D diagnostic image of the target region from each received diagnostic beam; and
a processor for synthesizing a relatively low clarity intra treatment 3-D image of the target region from said plurality of 2-D diagnostic images, and for comparing said synthesized 3-D image with a relatively high clarity pre-operative three-dimensional CT scan image to determine the position of the target region, so that said radiosurgical treatment beam can be continuously focused onto the target region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for treating a patient, comprising:
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generating a relatively high clarity three-dimensional pre-operative CT scan image of an anatomical region of the patient, said anatomical region including a target region to be treated by a radiosurgical treatment beam;
generating during treatment a plurality of diagnostic x-ray beams from different positions and directing said diagnostic x-ray beams towards at least one image receiver and through said target region of the patient, so that each beams passes through the target region at predetermined non-zero angles with respect to each other;
receiving said plurality of diagnostic x-ray beams from said at least one image receiver when the diagnostic x-ray beams have passed through the target region, so as to generate a plurality of 2-D diagnostic images, one for each diagnostic x-ray beam;
synthesizing a relatively low clarity intra-treatment 3-D image from said plurality of 2-D diagnostic images; and
comparing said sythesized 3-D image to the relatively high clarity three-dimensional CT scan image in order to control the movement of the treatment beam during the treatment so that said treatment beam remains focused onto said target region. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification