22 March 2010 Energy-discrimination x-ray computed tomography system utilizing a scanning cadmium-telluride detector
Author Affiliations +
An energy-discrimination K-edge x-ray computed tomography (CT) system is useful for controlling the image contrast of a target region by selecting both the photon energy and the energy width. The CT system has an oscillation-type linear cadmium telluride (CdTe) detectror. CT is performed by repeated linear scans and rotations of an object. Penetrating x-ray photons from the object are detected by a CdTe detector, and event signals of x-ray photons are produced using charge-sensitive and shaping amplifiers. Both photon energy and energy width are selected out using a multichannel analyzer, and the number of photons is counted by a counter card. In energy-discrimination CT, the tube voltage and tube current were 80 kV and 20 μA, respectively, and the x-ray intensity was 1.92 μGy/s at a distance of 1.0 m from the source and a tube voltage of 80 kV. The energy-discrimination CT was carried out by selecting x-ray photon energies.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eiichi Sato, Eiichi Sato, Ablajan Abduraxit, Ablajan Abduraxit, Toshiyuki Enomoto, Toshiyuki Enomoto, Manabu Watanabe, Manabu Watanabe, Keitaro Hitomi, Keitaro Hitomi, Kiyomi Takahashi, Kiyomi Takahashi, Shigehiro Sato, Shigehiro Sato, Akira Ogawa, Akira Ogawa, Jun Onagawa, Jun Onagawa, } "Energy-discrimination x-ray computed tomography system utilizing a scanning cadmium-telluride detector", Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76222Z (22 March 2010); doi: 10.1117/12.843993; https://doi.org/10.1117/12.843993

Back to Top