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

机译:对传统的基于X射线管的锥形束计算机断层扫描系统的改进

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摘要

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 CX-CBCT system are proposed based on the hardware condi-tions 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 time-saving relative to traditional methods.Furthermore,imag-ing 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.
机译:常规的基于X射线管的锥形束计算机断层扫描(CX-CBCT)系统在工业应用中具有巨大的潜力。这样的系统可以快速获得物体的三维(3D)图像。常规的X射线管具有较高的管电压和功率,因此可以满足工业应用的要求。对CX-CBCT系统进行了持续改进,例如缩短了成像时间,优化了采集策略以及开发了成像软件等。在本研究中,开发了CX-CBCT系统。另外,基于X射线管和探测器的硬件条件,提出了对CX-CBCT系统的一些改进。采用近探测器(ND)几何条件以获得更清晰的图像和更大的探测区域。提出了一种改进的采集策略,以简化操作并减少总成像时间。在ND几何条件下,提出了一种简化的FBP切片叠加方法(SS-FBP),该方法可以应用于3D图像重建。与传统方法相比,SS-FBP节省了时间。此外,在MATLAB环境中开发了用于CX-CBCT系统的成像软件。进行了几次成像实验。结果表明,CX-CBCT系统工作正常,上述改进是可行和实用的。

著录项

  • 来源
    《核技术(英文版)》 |2018年第3期|126-134|共9页
  • 作者单位

    School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;

    School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;

    School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;

    School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;

    School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-19 03:36:48
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