Orthovoltage radiotherapy
First Claim
1. A system, for treating an eye with radiation, comprising:
- an x-ray radiation source that emits an x-ray beam;
an alignment system that aligns the beam, based on fiducials on an outer surface of the eye, with an axis traversing the eye;
a gating mechanism that reduces radiation emission from the radiation source when the beam is not aligned with the axis; and
a communication link between the alignment system and the gating mechanism that communicates data, regarding alignment of the beam with the axis, from the alignment system to the gating mechanism.
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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.
259 Citations
19 Claims
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1. A system, for treating an eye with radiation, comprising:
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an x-ray radiation source that emits an x-ray beam; an alignment system that aligns the beam, based on fiducials on an outer surface of the eye, with an axis traversing the eye; a gating mechanism that reduces radiation emission from the radiation source when the beam is not aligned with the axis; and a communication link between the alignment system and the gating mechanism that communicates data, regarding alignment of the beam with the axis, from the alignment system to the gating mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, for delivery of an x-ray beam to an eye of a patient, comprising:
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at least one x-ray source that, in use, is positioned within about 15 cm of the retina of the eye and that emits an x-ray beam that is directed at the eye; and a laser that emits a laser beam toward the eye, the laser beam being substantially aligned with a long axis of the x-ray source and providing an indication of a direction of the x-ray beam emitted from the source; wherein the laser beam is aligned based on fiducials on an outer surface of the eye. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A radiotherapy system, for treating diseased eye tissue, comprising:
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an x-ray source that emits an x-ray beam, the x-ray beam having a cross-sectional width of no more than about 6 mm, the x-ray source having a first axis that the x-ray beam follows when the beam is emitted toward an eye; and a first light guide that emits a light beam toward the eye along a second axis that is aligned, based on fiducials on an outer surface of the eye, with the first axis, the light beam providing an indication of the first axis. - View Dependent Claims (17, 18, 19)
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Specification