A Study Of Automatic Brightness Control Operating Protocols And Their Effect On Image Quality

Stephen H. Fairweather; Richard L. Patterson; Gordon P. Stanhope

doi:10.1117/12.938195

15 November 1978 A Study Of Automatic Brightness Control Operating Protocols And Their Effect On Image Quality

Stephen H. Fairweather, Richard L. Patterson, Gordon P. Stanhope

Proceedings Volume 0152, Recent and Future Developments in Medical Imaging I; (1978) https://doi.org/10.1117/12.938195
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

Production of a diagnostic quality fluoroscopic image is predicated on the delivery of a controlled amount of x-radiation to the input phosphor of an image amplifier. Variations in patient thickness and limitations on table top dose rate make it difficult to define simple operating protocols. The work reported on here attempts to resolve this problem by presenting experimental data showing the variation of table top dose with kVp and mA for various water phantom thicknesses required to yield acceptable radiation levels at the intensifier input phosphor. Possible algorithms for resolving the conflict between dose rate and image quality are developed and discussed. The possibility of minimizing patient dose rate for a predescribed spacial resolution is suggested as a fruitful avenue for new work.

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Stephen H. Fairweather, Richard L. Patterson, and Gordon P. Stanhope "A Study Of Automatic Brightness Control Operating Protocols And Their Effect On Image Quality", Proc. SPIE 0152, Recent and Future Developments in Medical Imaging I, (15 November 1978); https://doi.org/10.1117/12.938195

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KEYWORDS

Image quality

Aluminum

X-rays

Automatic control

Image resolution

Medical imaging

Image intensifiers

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