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Proceedings Paper

Increasing the dose efficiency in silicon photon-counting detectors utilizing dual shapers
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Paper Abstract

Silicon photon-counting spectral detectors are promising candidates as the next generation detectors for 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%.

Paper Details

Date Published: 9 March 2018
PDF: 8 pages
Proc. SPIE 10573, Medical Imaging 2018: Physics of Medical Imaging, 105734W (9 March 2018); doi: 10.1117/12.2293453
Show Author Affiliations
Christel Sundberg, KTH Royal Institute of Technology (Sweden)
Martin Sjölin, KTH Royal Institute of Technology (Sweden)
Jacob Wikner, Linköping Univ. (Sweden)
Christer Svensson, Linköping Univ. (Sweden)
Mats Danielsson, KTH Royal Institute of Technology (Sweden)

Published in SPIE Proceedings Vol. 10573:
Medical Imaging 2018: Physics of Medical Imaging
Joseph Y. Lo; Taly Gilat Schmidt; Guang-Hong Chen, Editor(s)

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