Fan-beam monochromatic x-ray CT using fluorescent x-rays excited by synchrotron radiation

Fukai Toyofuku, Kenji Tokumori, Shigenobu Kanda, Yoshiharu Higashida, Masafumi Ohki, Tetsuji Cho, Katsuyuki Nishimura, Kazuyuki Hyodo, Masami Ando, Chikao Uyama

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Monochromatic x-ray CT has several advantages over conventional CT, which utilizes bremsstrahlung white x-rays from an x-ray tube. Although various types of monochromatic x-ray CT systems using synchrotron radiation have been developed using a parallel x-ray beam for imaging of small samples with a high spatial resolution, imaging of large objects such as the human body have not been developed yet. We have developed a fan-beam monochromatic x-ray CT using fluorescent x-rays generated by irradiating metal targets by synchrotron radiation. A CdTe linear array detector of 512mm sensitive width was used in the photon counting mode. We made phantom experiments using fluorescent x-rays ranging from 32 to 75 keV. Monochromatic x-ray CT images of a cylindrical lucite phantom filled with several contrast media have been obtained. Measured CT numbers are compared with linear attenuation coefficients, and they showed a good linearity over a wide range of contrast media concentrations.

Original languageEnglish
Pages (from-to)48-56
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3770
Publication statusPublished - Dec 1 1999
EventProceedings of the 1999 1st SPIE Conference on the Medical Applications of Penetrating Radiation - Denver, CO, USA
Duration: Jul 22 1999Jul 23 1999

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All Science Journal Classification (ASJC) codes

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

Cite this

Toyofuku, F., Tokumori, K., Kanda, S., Higashida, Y., Ohki, M., Cho, T., ... Uyama, C. (1999). Fan-beam monochromatic x-ray CT using fluorescent x-rays excited by synchrotron radiation. Proceedings of SPIE - The International Society for Optical Engineering, 3770, 48-56.