Measurements on a full-field digital mammography system with a photon counting crystalline silicon detector

Mats Lundqvist; Mats Danielsson; Bjoern Cederstroem; Valery Chmill; Alexander Chuntonov; Magnus Aslund

doi:10.1117/12.480251

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5 June 2003 Measurements on a full-field digital mammography system with a photon counting crystalline silicon detector

Mats Lundqvist, Mats Danielsson, Bjoern Cederstroem, Valery Chmill, Alexander Chuntonov, Magnus Aslund

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Proceedings Volume 5030, Medical Imaging 2003: Physics of Medical Imaging; (2003) https://doi.org/10.1117/12.480251
Event: Medical Imaging 2003, 2003, San Diego, California, United States

Abstract

Sectra Microdose is the first single photon counting mammography detector. An edge-on crystalline silicon detector is connected to application specific integrated circuits that individually process each photon. The detector is scanned across the breast and the rejection of scattered radiation exceeds 97% without the use of a Bucky. Processing of each x-rays individually enables an optimization of the information transfer from the x-rays to the image in a way previously not possible. Combined with an almost absence of noise from scattered radiation and from electronics we foresee a possibility to reduce the radiation dose and/or increase the image quality. We will discuss fundamental features of the new direct photon counting technique in terms of dose efficiency and present preliminary measurements for a prototype on physical parameters such as Noise Power Spectra (NPS), MTF and DQE.

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Mats Lundqvist, Mats Danielsson, Bjoern Cederstroem, Valery Chmill, Alexander Chuntonov, and Magnus Aslund "Measurements on a full-field digital mammography system with a photon counting crystalline silicon detector", Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); https://doi.org/10.1117/12.480251

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