Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1994-08-05
1997-04-22
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
2502081, 2505781, 2503417, 250553, G01J 132
Patent
active
056231393
ABSTRACT:
A system is disclosed for producing images representing radiation dose distributions in order to verify the radiation dose applied to a target area. The system uses a phantom assembly constructed of material that is the radiological equivalent of live tissue. The phantom assembly has slits where radiation sensitive film can be inserted and can include a channel for an insertable radiation generating device. The treatment dose is then applied to the phantom and the radiation sensitive film records the dose. A CCD camera microdensitometer is then used to read the exposed radiation sensitive film. The CCD camera microdensitometer includes a computer system which processes the image to remove artifacts and generates isodose contours for the radiation treatment applied. In addition, several pieces of radiation sensitive film in different planes can be exposed and processed in order to produce images representing the radiation dose distribution in three dimensions.
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Medical Physics, vol. 20, No. 3, May/Jun. 1993, pp. 925-926.
Allen Stephone
Photoelectron Corporation
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