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3 May 2002 Evaluation of a photon-counting mammography system
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The most natural way of digital X-ray imaging is photon counting as the photon flux in itself is digital. In photon counting, the information in the X-ray flux is used more efficiently as the information carrying low-energy photons are given the same weight as higher energy photons carrying less image information. This is in contrast to all existing X-ray instruments, which are energy-integrating systems where the highest energy photons are given the highest weight. A novel technique for high resolution digital X-ray imaging, using gaseous avalanche detectors for photon counting with high signal-to-noise ratios for single X-ray photons, has been developed. The performance of this detector has been studied and compared to analogue film-screen system by imaging phantoms. Our results show that this technology can improve image quality while decreasing the glandular dose to the patient.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stefan J. Thunberg, Tom Francke, Johan Egerstrom, Mathias Eklund, Leif Ericsson, Thomas Kristoffersson, Vladimir N. Peskov, Juha Rantanen, Skiff Sokolov, Per Svedenhag, Christer K. Ullberg, and Niclas Weber "Evaluation of a photon-counting mammography system", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002);

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