Government Guidelines Versus Image Quality In Chest Radiography

John G. Pearce; Gary D. Gillan; Werner W. Roeck; Eric N. C. Milne

doi:10.1117/12.957125

6 July 1979 Government Guidelines Versus Image Quality In Chest Radiography

John G. Pearce, Gary D. Gillan, Werner W. Roeck, Eric N. C. Milne

Proceedings Volume 0173, Application of Optical Instrumentation in Medicine VII; (1979) https://doi.org/10.1117/12.957125
Event: Application of Optical Instrumentation in Medicine VII, 1979, Toronto, Canada

Abstract

Recent Federal guidelines for radiation protection specify maximum exposure limits for certain radiological examinations performed in Federal institutions. For example, the maximum entrance skin exposure for a P.A. chest (23 cm) is recommended to be 30 milliroentgen. These guidelines, however, leave the criterion of image quality to the discretion of the institution. An investigation was done using an anthropomorphic chest phantom with simulated pulmoary nodules and pneumonia. A series of chest radiographs were produced at various entrance exposures by altering kilovoltage and image receptor. The exposures ranged from 5 mR to 65 mR. The variation of image quality obtainable within this range was categorized as least acceptable, acceptable, and most acceptable by three observers. The range of acceptability is correlated with entrance skin exposure.

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John G. Pearce, Gary D. Gillan, Werner W. Roeck, and Eric N. C. Milne "Government Guidelines Versus Image Quality In Chest Radiography", Proc. SPIE 0173, Application of Optical Instrumentation in Medicine VII, (6 July 1979); https://doi.org/10.1117/12.957125

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