Ocular radiosurgery
First Claim
1. A method of planning radiation therapy for an eye, comprising:
- preparing a treatment plan for a delivery of an actual dose of radiation to a target at a region of the eye from at least one x-ray radiation beam, the preparing comprising;
determining a first estimated dose of radiation to be delivered from an x-ray radiation source outside the eye to the target;
determining a second estimated dose of radiation to be received by at least one of the optic nerve and the lens of the eye from the x-ray radiation source; and
wherein the second estimated dose of radiation is equal to or less than about 40 percent of the first estimated dose; and
wherein the treatment plan comprises at least one of a width of the at least one radiation beam, a distance from the radiation source to the target, a trajectory of the beam, a maximum beam energy, and the first estimated dose of radiation; and
wherein the at least one of the width of the at least one radiation beam, the distance from the radiation source to the target, and the trajectory of the beam is selected to effect delivery of the first estimated dose to the target and the second estimated dose to the at least one of the optic nerve and the lens of the eye; and
outputting information indicative of the treatment plan to an output module.
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Accused Products
Abstract
A radiosurgery system is described that is configured to deliver 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, the ocular structures are placed in a global coordinate system based on ocular imaging. In some embodiments, the ocular structures inside the global coordinate system lead to direction of an automated positioning system that is directed based on the ocular structures within the coordinate system. In some embodiments, the position of the ocular structure is tracked and related to the status of the radiosurgery system. In some embodiments, a treatment plan is utilized in which beam energy and direction and duration of time for treatment is determined for a specific disease to be treated and/or structures to be avoided. In some embodiments, the structure is an eye and the eye is tracked by the system. In some embodiments, the eye is held in place and in some embodiments, the eye is fixed by the patient. In some embodiments, a fiducial is placed on the eye to aid in positioning. 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.
272 Citations
20 Claims
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1. A method of planning radiation therapy for an eye, comprising:
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preparing a treatment plan for a delivery of an actual dose of radiation to a target at a region of the eye from at least one x-ray radiation beam, the preparing comprising; determining a first estimated dose of radiation to be delivered from an x-ray radiation source outside the eye to the target; determining a second estimated dose of radiation to be received by at least one of the optic nerve and the lens of the eye from the x-ray radiation source; and wherein the second estimated dose of radiation is equal to or less than about 40 percent of the first estimated dose; and wherein the treatment plan comprises at least one of a width of the at least one radiation beam, a distance from the radiation source to the target, a trajectory of the beam, a maximum beam energy, and the first estimated dose of radiation; and wherein the at least one of the width of the at least one radiation beam, the distance from the radiation source to the target, and the trajectory of the beam is selected to effect delivery of the first estimated dose to the target and the second estimated dose to the at least one of the optic nerve and the lens of the eye; and outputting information indicative of the treatment plan to an output module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification