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Proceedings Paper

Investigation of x-ray photon counting using a silicon-PIN diode and its application to energy-dispersive computed tomography
Author(s): Hajime Kodama; Eiichi Sato; Michiaki Sagae; Osahiko Hagiwara; Hiroshi Matsukiyo; Akihiro Osawa; Toshiyuki Enomoto; Manabu Watanabe; Shinya Kusachi; Shigehiro Sato; Akira Ogawa
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Paper Abstract

X-ray photon counting was performed using a readymade silicon-PIN photodiode (Si-PIN-PD) at tube voltages ranging from 42 to 60 kV, and X-ray photons are directly detected using the 100 MHz Si-PIN-PD without a scintillator. Photocurrent from the diode is amplified using charge-sensitive and shaping amplifiers. Using a multichannel analyzer, X-ray spectra at a tube voltage of 60 kV could easily be measured. The photon-counting computed tomography (PCCT) is accomplished by repeated linear scans and rotations of an object, and projection curves of the object are obtained by the linear scan. In the PC-CT, we confirmed the energy-dispersive effect with changes in lower-level voltage of the event pulse using a comparator.

Paper Details

Date Published: 26 September 2013
PDF: 5 pages
Proc. SPIE 8853, Medical Applications of Radiation Detectors III, 885305 (26 September 2013); doi: 10.1117/12.2025365
Show Author Affiliations
Hajime Kodama, Toho Univ. School of Medicine (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Michiaki Sagae, Iwate Medical Univ. (Japan)
Osahiko Hagiwara, Toho Univ. School of Medicine (Japan)
Hiroshi Matsukiyo, Toho Univ. School of Medicine (Japan)
Akihiro Osawa, Toho Univ. School of Medicine (Japan)
Toshiyuki Enomoto, Toho Univ. School of Medicine (Japan)
Manabu Watanabe, Toho Univ. School of Medicine (Japan)
Shinya Kusachi, Toho Univ. School of Medicine (Japan)
Shigehiro Sato, Iwate Medical Univ. (Japan)
Akira Ogawa, Iwate Medical Univ. (Japan)

Published in SPIE Proceedings Vol. 8853:
Medical Applications of Radiation Detectors III
H. Bradford Barber; Hans Roehrig, Editor(s)

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