Invention Grant
- Patent Title: Systems, methods, and devices for radiation beam asymmetry measurements using electronic portal imaging devices
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Application No.: US15449586Application Date: 2017-03-03
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Publication No.: US10682528B2Publication Date: 2020-06-16
- Inventor: Reto Ansorge , Mathias Lehmann , Stefan J. Thieme-Marti
- Applicant: Varian Medical Systems International AG
- Applicant Address: CH Steinhausen
- Assignee: VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
- Current Assignee: VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
- Current Assignee Address: CH Steinhausen
- Agency: SGPatents PLLC
- Main IPC: A61N5/10
- IPC: A61N5/10 ; G01N23/20 ; G01T1/29
Abstract:
Systems and methods for determining beam asymmetry in a radiation treatment system using electronic portal imaging devices (EPIDs) without implementation of elaborate and complex EPID calibration procedures. The beam asymmetry is determined based on radiation scattered from different points in the radiation beam and measured with the same region of interest ROI of the EPID.
Public/Granted literature
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