Verification of radiation beam characteristics

Details Verification of radiation beam characteristics Verification of radiation beam characteristics

2003-02-12

2009-02-03

Smith, Ruth S (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C378S065000, C382S128000, C600S407000

Reexamination Certificate

active

07486983

ABSTRACT:
A system to acquire a first image of a radiation field, the radiation field produced by a radiation beam, and to determine a second image based on the first image and based on a reference image of a reference radiation field having substantially homogeneous intensity, the second image representing characteristics of the radiation beam. Some embodiments provide acquisition of a first profile associated with a radiation beam using a radiation detection device, acquisition of a first image of a first radiation field produced by the radiation beam using an imaging device, determination of a map between the first image and the first profile, acquisition a second image of a second radiation field using the imaging device, and determination of a second profile based on the map and the second image.

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Assessment of Flatness and Symmetry of Megavoltage X-Ray Beam With an Electronic Portal Imaging Device (EPID), G. Liu, T. Van Doom, and E. Bezak, Dept. of Physics and Mathematical Physics, University of Adelaide, SA, Accepted May 31, 2002.
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