Orthovoltage radiotherapy
First Claim
1. A system, for treating an eye with radiation, comprising:
- a radiation source that emits radiation;
a collimator that collimates the emitted radiation into a beam;
an alignment system that aligns the beam with an axis traversing the eye, the alignment system defining the axis by fiducials on an outer surface of 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.
3 Assignments
0 Petitions
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.
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Citations
29 Claims
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1. A system, for treating an eye with radiation, comprising:
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a radiation source that emits radiation; a collimator that collimates the emitted radiation into a beam; an alignment system that aligns the beam with an axis traversing the eye, the alignment system defining the axis by fiducials on an outer surface of 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 collimator that, in use, is positioned within about 15 cm of the retina of the eye and that collimates an x-ray beam that is directed at the eye; an alignment system that aligns a beam, emitted from the collimator, with an axis traversing the eye, the alignment system defining the axis by fiducials on an outer surface of 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 collimator and providing an indication of the alignment of the beam and the axis traversing 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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a collimator that collimates a radiation beam, emitted from a radiation source, to a cross-sectional width of the radiation beam of no more than about 6 mm, the collimator defining a first axis that the radiation beam follows when the radiation beam is emitted toward an eye; and an alignment system that aligns the radiation beam with the first axis, the alignment system identifying the first axis by fiducials on an outer surface of the eye, the alignment system comprising a first light guide that emits a light beam toward the eye along a second axis that is aligned with the first axis, the light beam providing an indication of the first axis. - View Dependent Claims (17, 18, 19)
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20. A method, of delivering radiation to an eye, comprising:
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providing an anterior-posterior axis of the eye; defining a treatment axis, based on fiducials on an outer surface of the eye, relative to the anterior-posterior axis of the eye; aligning a collimator at an angle relative to the treatment axis, the collimator being configured to collimate an x-ray beam that is emitted toward the eye; emitting the x-ray beam toward the eye through the collimator and at the angle relative to the treatment axis; and collimating the x-ray beam to a cross-sectional dimension of less than about 6 mm. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification