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Increasing the dose efficiency in silicon photon-counting detectors utilizing dual shapers
KTH Royal Inst Technol, Sweden.
KTH Royal Inst Technol, Sweden.
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2144-6795
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.
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2018 (English)In: PROCEEDINGS VOLUME 10573 SPIE MEDICAL IMAGING, 10-15 FEBRUARY 2018 Medical Imaging 2018: Physics of Medical Imaging, SPIE - International Society for Optical Engineering, 2018, Vol. 10573, article id UNSP 105734WConference paper, Published paper (Refereed)
Abstract [en]

Silicon photon-counting spectral detectors are candidates for the next generation of medical CT. For silicon detectors, a low noise floor is necessary to obtain good detection efficiency. A low noise floor can be obtained by having a slow shaping filter in the ASIC, but this leads to a long dead-time, thus decreasing the count-rate performance. In this work, we evaluate the benefit of utilizing two sub-channels with different shaping times. It is shown by simulation that utilizing a dual shaper can increase the dose efficiency for equal count-rate capability by up to 17%.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2018. Vol. 10573, article id UNSP 105734W
Series
Progress in Biomedical Optics and Imaging, ISSN 1605-7422 ; 10573
Keywords [en]
dose efficiency; silicon detector; shaping time; ASIC; photon-counting
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-151532DOI: 10.1117/12.2293453ISI: 000436173700167ISBN: 9781510616363 (print)OAI: oai:DiVA.org:liu-151532DiVA, id: diva2:1250585
Conference
SPIE Medical Imaging, 10-15 February, 2018, Houston, Texas, United States
Available from: 2018-09-24 Created: 2018-09-24 Last updated: 2019-04-23Bibliographically approved

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Wikner, JacobSvensson, Christer

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