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

6 October 1999 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

Author Affiliations +

Proceedings Volume 3770, Medical Applications of Penetrating Radiation; (1999) https://doi.org/10.1117/12.368188
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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 512 mm 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.

Citation Download Citation

Fukai Toyofuku, Kenji Tokumori, Shigenobu Kanda, Yoshiharu Higashida, Masafumi Ohki, Tetsuji Cho, Katsuyuki Nishimura, Kazuyuki Hyodo, Masami Ando, and Chikao Uyama "Fan-beam monochromatic x-ray CT using fluorescent x rays excited by synchrotron radiation", Proc. SPIE 3770, Medical Applications of Penetrating Radiation, (6 October 1999); https://doi.org/10.1117/12.368188

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