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Increasing the dose efficiency in silicon photon-counting detectors utilizing dual shapers
KTH, School of Engineering Sciences (SCI), Physics, Physics of Medical Imaging.
KTH, School of Engineering Sciences (SCI), Physics, Physics of Medical Imaging.ORCID iD: 0000-0002-8626-495X
Linkoping Univ, Dept Elect Engn, SE-58183 Linkoping, Sweden..
Linkoping Univ, Dept Elect Engn, SE-58183 Linkoping, Sweden..
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2018 (English)In: Medical Imaging 2018: Physics Of Medical Imaging / [ed] Lo, JY Schmidt, TG Chen, GH, SPIE - International Society for Optical Engineering, 2018, 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. 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
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:kth:diva-235156DOI: 10.1117/12.2293453ISI: 000436173700167Scopus ID: 2-s2.0-85049237693ISBN: 978-1-5106-1636-3 (print)OAI: oai:DiVA.org:kth-235156DiVA, id: diva2:1248806
Conference
Medical Imaging 2018: Physics of Medical Imaging, Houston, United States, 12 February 2018 through 15 February 2018
Note

QC 20180917

Available from: 2018-09-17 Created: 2018-09-17 Last updated: 2018-11-08Bibliographically approved

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Sjölin, MartinDanielsson, Mats

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