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Proceedings Paper

Imaging performance of a low-dose screen-film mammography system
Author(s): Hamid Jafroudi; Robert J. Jennings; Robert M. Gagne; Dorothy Steller Artz; James J. Vucich; Matthew T. Freedman M.D.; Seong Ki Mun
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Paper Abstract

The purpose of this work is to evaluate the imaging and dose performance of an x-ray imaging system optimized for mammography. The x-ray system design was developed by the University of Southern California and the Center for Devices and Radiological Health using multiparameter optimization techniques. The prototype was built by Fischer Imaging and is now under evaluation at the National Institutes of Health. While previous reports have concentrated on demonstrating the does reduction potential of the system, for this study the x-ray spectrum was modified to maximize imaging performance. Measurements were made to assess the level of imaging performance achieved and to determine the increase in dose. Contrast-detail analysis along with qualitative evaluation of images of conventional mammography phantoms were used to assess imaging performance. Both imaging performance and the dose delivered by the system were compared to those of a conventional mammography system. Because of the current interest in digital mammography, the performance of the optimized system with a storage phosphor plate image receptor, sometimes referred to as computed radiography (CR), was also studied. The optimized system provided significantly better imaging performance than the conventional system with both film-screen and CR detectors. The dose was increased to a level comparable to the average value for conventional systems using grids.

Paper Details

Date Published: 2 May 1997
PDF: 6 pages
Proc. SPIE 3032, Medical Imaging 1997: Physics of Medical Imaging, (2 May 1997); doi: 10.1117/12.274003
Show Author Affiliations
Hamid Jafroudi, Georgetown Univ. Medical Ctr. (United States)
Robert J. Jennings, Ctr. for Devices and Radiological Health/FDA (United States)
Robert M. Gagne, Ctr. for Devices and Radiological Health/FDA (United States)
Dorothy Steller Artz, Georgetown Univ. Medical Ctr. (United States)
James J. Vucich, National Institutes of Health (United States)
Matthew T. Freedman M.D., Georgetown Univ. Medical Ctr. (United States)
Seong Ki Mun, Georgetown Univ. Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 3032:
Medical Imaging 1997: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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