Abstract
We are developing an 18×27cm digital x-ray detector for whole-breast mammography based on CCD imaging technology [1]. In this paper we report the performance of a 10×20 cm, 2-CCD prototype we have built and tested. Similar to a film system, this detector uses a phosphor screen to convert an x-ray image to visible light. In the digital system the light photons are transferred onto a charge-coupled device (CCD) by a demagnifying fiber optic taper. Dedicated electronics then transfer the image to a PC based viewing station. The dynamic range of the detector is roughly 375 times greater than that of a typical screen film [2]. This difference increases our ability to discriminate low contrast differences in tissue, and allows image exposure to be determined solely by the desired signal-to-noise ratio and acceptable patient dose, whereas in a non-digital system, exposure is determined by film’s narrow linear response range.
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D. Rosen, M.J. Stanton, W. Phillips, M.B. Williams, D. O’Mara and H. Qian (1997) Full Field Digital Mammography Using CCD Technology, RSNA97, infoRAD Presentation
M.B. Williams, P.A. Mangiafico, P.U. Simoni, M.J. Stanton, W. Phillips, D. Rosen, (1997) Workstation Display of Images From a Prototype Detector for Digital Mammography, RSNA97, infoRAD Presentation
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© 1998 Springer Science+Business Media Dordrecht
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Smilowitz, L. et al. (1998). A CCD Based Digital Detector for Whole-Breast Digital Mammography. In: Karssemeijer, N., Thijssen, M., Hendriks, J., van Erning, L. (eds) Digital Mammography. Computational Imaging and Vision, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5318-8_5
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DOI: https://doi.org/10.1007/978-94-011-5318-8_5
Publisher Name: Springer, Dordrecht
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