Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (3): 43 doi: 10.1007/s41365-018-0370-8

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Improvements to conventional X-ray tube-based cone-beam computed tomography system

Cui Zhang, Xiao-Dong Pan, Hong-Jie Shang, Yan-Hong Luo, Gong-Ping Li   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Contact: Xiao-Dong Pan E-mail:pxd@lzu.edu.cn
  • Supported by:

    This work was supported by the Fundamental Research Funds for the Central Universities (Nos. lzujbky-2016-208 and lzujbky-2016-32).

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Cui Zhang, Xiao-Dong Pan, Hong-Jie Shang, Yan-Hong Luo, Gong-Ping Li. Improvements to conventional X-ray tube-based cone-beam computed tomography system.Nuclear Science and Techniques, 2018, 29(3): 43     doi: 10.1007/s41365-018-0370-8

Abstract:

Conventional X-ray tube-based cone-beam computed tomography (CX-CBCT) systems have great potential in industrial applications. Such systems can rapidly obtain a three-dimensional (3D) image of an object. Conventional X-ray tubes fulfill the requirements for industrial applications, because of their high tube voltage and power. Continuous improvements have been made to CX-CBCT systems, such as imaging time shortening, acquisition strategy optimization, and imaging software development, etc. In this study, a CX-CBCT system is developed. Additionally, some improvements to the CXCBCT system are proposed based on the hardware conditions of the X-ray tube and detector. A near-detector (ND) geometry condition is employed to obtain a sharper image and larger detection area. An improved acquisition strategy is proposed to simplify operations and reduce total imaging time. In the ND geometry condition, a simplified method called FBP slice stacking (SS-FBP) is proposed, which can be applied to 3D image reconstruction. SS-FBP is timesaving relative to traditional methods. Furthermore, imaging software for the CX-CBCT system is developed in the MATLAB environment. Several imaging experiments were performed. The results suggest that the CX-CBCT system works properly, and that the above improvements are feasible and practical.

Key words: Cone-beam CT, Conventional X-ray tube, Nondestructive testing, X-ray imaging