Methods and devices for detecting, controlling, and predicting radiation delivery

US8503609B2 · kind B2 · utility

Assignee

• Oraya Therapeutics, Inc. · US

Inventors

• Michael Gertner · San Francisco, US
• Mark Arnoldussen · Redwood City, US
• Erik Chell · Oakland, US
• Steven D. Hansen · Concord, US
• Matt Herron · Palo Alto, US
• Igor Koruga · Pacifica, US
• Junzhong Liang · Fremont, US

Key dates

• Filing date: Sep 7, 2010
• Grant date: Aug 6, 2013
• Expiry date: Nov 2, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N2005/1091
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Embodiments provide method and systems for determining alignment of a patient's body part, such as an eye, in an external coordinate system of a treatment or diagnostic device, such as a radiotherapy device, so as to define a reference axis for guiding device operation. Additional embodiments provide image-based methods and systems for aligning, tracking and monitoring motion of a body part and a treatment target in relation to a radiation beam axis. Particular ophthalmic embodiments provide method and systems including an eye-contact guide device and imaging system for aligning and tracking motion of an eye and ocular treatment target in relation to an orthovoltage X-ray beam axis, so as to monitor application of radiation to a lesion, such as a macular lesion of the retina. Particular methods for controlling radiation in response to motion of the target during treatment are described, such as algorithms for gating or interrupting radiation emission, both to ensure treatment goals and to avoid exposure to sensitive structures.