Improvement of analysis precision upon the atomic number and electron density measurement by the dual x-ray CT

Yukino Imura; Hisashi Morii; Akifumi Koike; Takaharu Okunoyama; Yoichiro Neo; Hidenori Mimura; Toru Aoki

doi:10.1117/12.862639

27 August 2010 Improvement of analysis precision upon the atomic number and electron density measurement by the dual x-ray CT

Yukino Imura, Hisashi Morii, Akifumi Koike, Takaharu Okunoyama, Yoichiro Neo, Hidenori Mimura, Toru Aoki

Author Affiliations +

Proceedings Volume 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII; 78051M (2010) https://doi.org/10.1117/12.862639
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

To identify the factor impairing the material identification parameters, which is provided by the dual-energy X-ray computed tomography method using a conventional X-ray tube and a CdTe detector, linear attenuation coefficient was measured by the radioactivity of radio isotopes and compared with theoretical figure. In our study, the atomic number and the electron density is calculated from the linear attenuation coefficient obtained in CT measurement by 64-channel CdTe line detector. To estimate accuracy of CdTe line sensor, it is needed to obtain the linear attenuation coefficient accurately. Using a single detector, the linear attenuation coefficient is verified for accuracy. The energy resolution of CdTe detectors and the method of reconstruction are discussed.

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Yukino Imura, Hisashi Morii, Akifumi Koike, Takaharu Okunoyama, Yoichiro Neo, Hidenori Mimura, and Toru Aoki "Improvement of analysis precision upon the atomic number and electron density measurement by the dual x-ray CT", Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 78051M (27 August 2010); https://doi.org/10.1117/12.862639

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