X-ray or gamma ray systems or devices – Accessory – Testing or calibration
Patent
1985-07-08
1987-01-20
Howell, Janice A.
X-ray or gamma ray systems or devices
Accessory
Testing or calibration
2502521, G01D 1800
Patent
active
046385029
ABSTRACT:
Anthropomorphic phantoms for radiological testing, assessment and training are prepared by obtaining a radiograph of a body part to be simulated, translating the radiograph into densitometric data, translating the densitometric data into thickness data representing the thickness of a selected phantom material required to produce that density under conditions similar to those used to produce the original radiograph, and using the thickness data obtained to produce, for example by employing a numerically controlled milling machine, a three dimensional representation of those thicknesses on the selected material which matches the radiographic image forming characteristics of the original body part when imaged under similar conditions.
REFERENCES:
patent: 3755672 (1973-08-01), Edholm et al.
D. R. White, "Tissue Substitutes in Experimental Radiation Physics", Med. Phys. 5(6), Nov./Dec. 1978, pp. 467-479.
Brochure "The MCP-70-SE-System for Making and Applying Irregular Shields and Compensators for Radiotherapy" HEK, 1983 or earlier.
Howell Janice A.
The Ontario Cancer Institute
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