High-speed photon-counting x-ray computed tomography system utilizing a multipixel photon counter

Eiichi Sato, Toshiyuki Enomoto, Manabu Watanabe, Keitaro Hitomi, Kiyomi Takahashi, Shigehiro Sato, Akira Ogawa, Jun Onagawa

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

High-speed photon counting is useful for discriminating photon energy and for decreasing absorbed dose for patients in medical radiography, and the counting is usable for constructing an x-ray computed tomography (CT) system. A photon-counting x-ray CT system is of the first generation type and consists of an x-ray generator, a turn table, a translation stage, a two-stage controller, a multipixel photon counter (MPPC) module, a 1.0-mm-thick LSO crystal (scintillator), a counter card (CC), and a personal computer (PC). Tomography is accomplished by repeating the linear scanning and the rotation of an object, and projection curves of the object are obtained by the linear scanning using the detector consisting of a MPPC module and the LSO. The pulses of the event signal from the module are counted by the CC in conjunction with the PC. The lower level of the photon energy is roughly determined by a comparator circuit in the module, and the unit of the level is the photon equivalent (pe). Thus, the average photon energy of the x-ray spectra increases with increasing the lower-level voltage of the comparator. The maximum count rate was approximately 20 Mcps, and energy-discriminated CT was roughly carried out.

本文言語English
ホスト出版物のタイトルInternational Symposium on Photoelectronic Detection and Imaging 2009 - Terahertz and High Energy Radiation Detection Technologies and Applications
ページ数1
DOI
出版ステータスPublished - 2009 11 23
イベントInternational Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications - Beijing, China
継続期間: 2009 6 172009 6 19

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
7385
ISSN(印刷版)0277-786X

Other

OtherInternational Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
CountryChina
CityBeijing
Period09/6/1709/6/19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

フィンガープリント 「High-speed photon-counting x-ray computed tomography system utilizing a multipixel photon counter」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル