Orthovoltage radiosurgery
First Claim
1. A system, for treating a target tissue with x-ray radiation, comprising:
- an x-ray source that emits x-rays, the source configured to provide therapeutic x-ray treatment;
a collimator that collimates x-rays emitted by the x-ray source into an x-ray beam, the collimator having a outer perimeter as the x-ray beam is emitted from the collimator;
the collimator having at least one exit plane having a first cross-sectional pattern, coextensive with the outer perimeter, defined by a first cross-sectional dimension; and
the x-ray beam having a dose distribution at a beam spot in the exit plane of the collimator such that the x-ray beam at a region within the plane is characterized by a region of maximal intensity encompasses a region of minimal intensity.
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Accused Products
Abstract
A radiosurgery system is described that delivers a therapeutic dose of radiation to a target structure in a patient. In some embodiments, inflammatory ocular disorders are treated, specifically macular degeneration. In some embodiments, ocular structures are placed in a global coordinate system, based on ocular imaging, which leads to direction of an automated positioning system. In some embodiments, the position of an ocular structure is tracked and related to a radiosurgery system. In some embodiments, a treatment plan is utilized for a specific disease to be treated and/or structures to be avoided. In some embodiments, a fiducial aids in positioning the system. In some embodiments, a reflection off the eye is used to aid in positioning. In some embodiments, radiodynamic therapy is described in which radiosurgery is used in combination with other treatments and can be delivered concomitant with, prior to, or following other treatments.
249 Citations
26 Claims
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1. A system, for treating a target tissue with x-ray radiation, comprising:
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an x-ray source that emits x-rays, the source configured to provide therapeutic x-ray treatment; a collimator that collimates x-rays emitted by the x-ray source into an x-ray beam, the collimator having a outer perimeter as the x-ray beam is emitted from the collimator; the collimator having at least one exit plane having a first cross-sectional pattern, coextensive with the outer perimeter, defined by a first cross-sectional dimension; and the x-ray beam having a dose distribution at a beam spot in the exit plane of the collimator such that the x-ray beam at a region within the plane is characterized by a region of maximal intensity encompasses a region of minimal intensity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method, for treating a target tissue with x-ray radiation, comprising:
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(a) providing a collimator that collimates x-rays emitted by an x-ray source into x-ray beam, the collimator having at least one selectable and/or adjustable exit plane collimation element configured to delimit the x-ray beam at the exit plane so that the beam has an emitted dose distribution pattern having at least one region of maximal intensity that encompasses at least one region of minimal intensity; (b) determining an absorbed dose distribution pattern suitable for treatment of target tissue at a treatment zone of the eye; (c) selecting and/or adjusting the exit plane collimation element so as to produce an emitted dose distribution pattern that, when the x-ray beam is propagated to the treatment zone along a selected first beam path, results in the absorbed dose distribution pattern at the treatment zone; and (d) emitting an x-ray beam from the collimator along the first beam path, to provide an absorbed x-ray dose having substantially the absorbed dose distribution pattern at the treatment zone. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification