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

doi:10.1117/12.368188

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

Division of medical Quantum Science

Research output: Contribution to journal › Conference article › peer-review

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 language	English
Pages (from-to)	48-56
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3770
DOIs	https://doi.org/10.1117/12.368188
Publication status	Published - Jan 1 1999
Event	Proceedings of the 1999 1st SPIE Conference on the Medical Applications of Penetrating Radiation - Denver, CO, USA Duration: Jul 22 1999 → Jul 23 1999

All Science Journal Classification (ASJC) codes

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

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10.1117/12.368188

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Fan-beam monochromatic x-ray CT using fluorescent x-rays excited by synchrotron radiation. / Toyofuku, Fukai; Tokumori, Kenji; Kanda, Shigenobu; Higashida, Yoshiharu; Ohki, Masafumi; Cho, Tetsuji; Nishimura, Katsuyuki; Hyodo, Kazuyuki; Ando, Masami; Uyama, Chikao.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 3770, 01.01.1999, p. 48-56.

Research output: Contribution to journal › Conference article › peer-review

Toyofuku, Fukai ; Tokumori, Kenji ; Kanda, Shigenobu ; Higashida, Yoshiharu ; Ohki, Masafumi ; Cho, Tetsuji ; Nishimura, Katsuyuki ; Hyodo, Kazuyuki ; Ando, Masami ; Uyama, Chikao. / Fan-beam monochromatic x-ray CT using fluorescent x-rays excited by synchrotron radiation. In: Proceedings of SPIE - The International Society for Optical Engineering. 1999 ; Vol. 3770. pp. 48-56.

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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.",

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

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AU - Ohki, Masafumi

AU - Cho, Tetsuji

AU - Nishimura, Katsuyuki

AU - Hyodo, Kazuyuki

AU - Ando, Masami

AU - Uyama, Chikao

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AB - 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.

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