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Proceedings Paper

Reduction of patient exposure in pediatric radiology: an observer performance study
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Paper Abstract

To determine if presently used exposure levels in pediatric imaging can be reduced without loss of information or decrease in diagnostic accuracy, a method for multiple (stacked) image detectors and filters using a computed radiography system was used to obtain identical images of different exposure levels of neonates with either no active lung disease or hyaline membrane disease. Physical characteristics of the images were measured. A contrast-detail study and an ROC study were conducted to measure observer performance. Physical measurements and the contrast detail study revealed that all images were essentially x-ray photon noise limited. The ROC study indicated that diagnostic accuracy did not decrease significantly up to about 75% exposure reduction levels, although image quality rating data decreased with each exposure reduction. Decreasing exposure levels to about 75% of current levels may be acceptable in some clinical situations where dose is a concern, such as in pediatric imaging.

Paper Details

Date Published: 17 April 1995
PDF: 12 pages
Proc. SPIE 2436, Medical Imaging 1995: Image Perception, (17 April 1995); doi: 10.1117/12.206852
Show Author Affiliations
Elizabeth A. Krupinski, Univ. of Arizona (United States)
Hans Roehrig, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 2436:
Medical Imaging 1995: Image Perception
Harold L. Kundel, Editor(s)

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