Paper
18 August 1980 Energy And Exposure Rate Dependences Of Ionization Chamber And Fluorescent Type Automatic X-Ray Exposure Controls
Bruce A. Horn, Charles E. Finney, Kim C. Luk
Author Affiliations +
Proceedings Volume 0233, Application of Optical Instrumentation in Medicine VIII; (1980) https://doi.org/10.1117/12.958918
Event: Application of Optical Instrumentation in Medicine VIII, 1980, Las Vegas, United States
Abstract
Manufacturers use either ionization chambers or photomultiplier tubes coupled to fluorescent screens as the pickup device in their automatic film exposure controls. The clinical performance of the control will be affected by its energy and exposure rate dependences. These two parameters are not usually determined independently when evaluating an automatic exposure control. By independently measuring these parameters the performance evaluation procedure can be shortened, while improving the description of performance over a wide range of tube potentials and patient thicknesses. A method to isolate the energy and the exposure rate dependences will be discussed, and measurements representing several manufacturers will be presented.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bruce A. Horn, Charles E. Finney, and Kim C. Luk "Energy And Exposure Rate Dependences Of Ionization Chamber And Fluorescent Type Automatic X-Ray Exposure Controls", Proc. SPIE 0233, Application of Optical Instrumentation in Medicine VIII, (18 August 1980); https://doi.org/10.1117/12.958918
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Control systems

Automatic control

Ionization

Sensors

Automatic exposure

X-rays

Absorbance

RELATED CONTENT

Phototimers, User's Point Of View
Proceedings of SPIE (March 25 1976)
X-Ray Automatic Exposure Control
Proceedings of SPIE (March 25 1976)
X-Ray Automatic Exposure Timing And Control Circuitry
Proceedings of SPIE (March 25 1976)
Energy Dependence Effects On Performance Of Phototimers
Proceedings of SPIE (March 25 1976)

Back to Top