3D non-destructive fluorescent X-ray computed tomography (FXCT) with a CdTe array

Changyeon Yoon, Yoimgliak Kim, Won Ho Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We developed a 3D tomographic non-destructive test detecting fluorescence X-rays with a 2D CdTe array. Experiments proceeded with various phantoms and image reconstruction methods. In general, conventional Computed Tomography (CT) analyzes materials based on attenuation coefficients and is highly dependent on the densities of the materials, and hence, it is difficult to discriminate similar density materials even if their atomic numbers is different from each other. In our research, the material was exposed to an X-ray and not only the conventional transmission image but also 3D images based on the information of characteristic X-ray detected by a 2D CdTe planar detector array were reconstructed. Since atoms have their own characteristic X-ray energy, our system was able to discriminate materials of even a same density if the materials were composed of different atomic numbers. In addition, the transmission and characteristic X-ray images were combined to specifically analyze the information of position, density and atomic number on unknown materials. Several image reconstruction methods were applied and the reconstructed images were compared with each other to figure out an algorithm optimized to FXCT.

Original languageEnglish
Title of host publication2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479960972
DOIs
Publication statusPublished - 2016 Mar 10
EventIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 - Seattle, United States
Duration: 2014 Nov 82014 Nov 15

Other

OtherIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
CountryUnited States
CitySeattle
Period14/11/814/11/15

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Yoon, C., Kim, Y., & Lee, W. H. (2016). 3D non-destructive fluorescent X-ray computed tomography (FXCT) with a CdTe array. In 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 [7431288] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2014.7431288