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METHODS AND DEVICES FOR ORTHOVOLTAGE OCULAR RADIOTHERAPY AND TREATMENT PLANNING

  • US 20110081001A1
  • Filed: 09/21/2010
  • Published: 04/07/2011
  • Est. Priority Date: 12/23/2007
  • Status: Active Grant
First Claim
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1. A treatment planning method for treating a lesion at or adjacent to the retina of an eye of a patient, by directing X-radiation at the lesion in a patient'"'"'s eye, based on an aligned patient-eye position, along at least two treatment beam paths from a source of a collimated x-radiation beam, comprising:

  • (a) determining, based on known spectral and intensity characteristics of a source beam along the treatment beam paths and from coordinates of the lesion in the aligned patient-eye position, a total treatment time for irradiation along the beam paths that is effective to produce a desired radiation dose at the lesion, and(b) determining, based on known spectral and intensity characteristics of the source beam along the beam paths and from coordinates of the optic nerve in the aligned patient-eye position, an extent and duration of eye movement, away from the aligned patient-eye position in a direction that moves the patient'"'"'s optic nerve toward the irradiation beam, that will be allowed during treatment, while maintaining a radiation dose at the patient optic nerve below a predetermined dose level.

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