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Proceedings Paper

Measurements on a full-field digital mammography system with a photon counting crystalline silicon detector
Author(s): Mats Lundqvist; Mats Danielsson; Bjoern Cederstroem; Valery Chmill; Alexander Chuntonov; Magnus Aslund
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Paper 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.

Paper Details

Date Published: 5 June 2003
PDF: 6 pages
Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); doi: 10.1117/12.480251
Show Author Affiliations
Mats Lundqvist, Royal Institute of Technology (Sweden)
Mats Danielsson, Mamea Imaging AB (Sweden)
Royal Institute of Technology (Sweden)
Bjoern Cederstroem, Mamea Imaging AB (Sweden)
Royal Institute of Technology (Sweden)
Valery Chmill, Royal Institute of Technology (Sweden)
Alexander Chuntonov, Mamea Imaging AB (Sweden)
Magnus Aslund, Mamea Imaging AB (Sweden)


Published in SPIE Proceedings Vol. 5030:
Medical Imaging 2003: Physics of Medical Imaging
Martin J. Yaffe; Larry E. Antonuk, Editor(s)

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