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Proceedings Paper

Development of the photon-counting 256ch CdTe line detector
Author(s): Kenji Tokumori; Fukai Toyofuku; Shigenobu Kanda; Sueki Baba; Yoshio Mito; Kazuyuki Hyodo; Masami Ando; Chikao Uyama
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Paper Abstract

We have developed a photon-counting 256ch CdTe line detector system for a monochromatic x-ray CT system using fluorescent x-rays generated by synchrotron radiation. The size of each detector element is 1.98 mm(w) X 1.98 mm(h) X 0.5 mm(t). Each element has two discriminators (an upper and a lower discriminator) and two 16-bit counters (an upper and a lower counter). Each discriminator rejects pulses having a pulse height lower than the chosen voltage limits. All pulses in between the upper and lower voltage limits were obtained by subtracting the upper counter value from the lower counter value. By changing the voltage limits, we can obtain an incident x-ray energy spectrum. Several energy spectra for the fluorescent x-ray and standard (gamma) -ray sources were measured by using this detector. The detector showed a sufficient energy resolution, and has been found to be suitable as a detector of monochromatic x-ray CT.

Paper Details

Date Published: 6 October 1999
PDF: 8 pages
Proc. SPIE 3770, Medical Applications of Penetrating Radiation, (6 October 1999); doi: 10.1117/12.368180
Show Author Affiliations
Kenji Tokumori, Kyushu Univ. (Japan)
Fukai Toyofuku, Kyushu Univ. (Japan)
Shigenobu Kanda, Kyushu Univ. (Japan)
Sueki Baba, Matsushita Industrial Equipment Co. (Japan)
Yoshio Mito, Matsushita Industrial Equipment Co. (Japan)
Kazuyuki Hyodo, High Energy Accelerator Research Organization (Japan)
Masami Ando, High Energy Accelerator Research Organization (Japan)
Chikao Uyama, National Cardiovascular Ctr. (Japan)


Published in SPIE Proceedings Vol. 3770:
Medical Applications of Penetrating Radiation
H. Bradford Barber; Hans Roehrig, Editor(s)

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