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Optimal specimen placement in cone beam X-ray computed tomography

机译:锥形束X射线计算机断层扫描中的最佳标本放置

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摘要

Picking a specimen's optimal placement on the rotary plate of a cone beam X-ray computed tomography system is a time-consuming but critical task in its application. Due to suboptimal placements artifacts, irregularities and distortions may result, which hinder or prevent reliable evaluations. To determine the optimal specimen placement a method is introduced, which allows analyzing and assessing potential specimen placements. Based on the specimen's 3D geometrical model the analysis considers X-ray penetration lengths, the specimen's Radon space representation as well as the placement's stability. The results are visually represented and analyzed in placement maps, revealing areas prone to artifacts.
机译:在锥束X射线计算机断层扫描系统的旋转板上挑选样本的最佳位置是一项耗时但至关重要的任务。由于放置效果欠佳,可能会导致伪影,不规则和变形,从而妨碍或阻止可靠的评估。为了确定最佳的样品放置位置,引入了一种方法,该方法可以分析和评估潜在的样品放置位置。根据标本的3D几何模型,分析将考虑X射线穿透长度,标本的Radon空间表示以及放置的稳定性。在放置图中直观地表示和分析结果,揭示容易出现伪影的区域。

著录项

  • 来源
    《NDT & E international》 |2012年第2012期|p.42-49|共8页
  • 作者单位

    University of Applied Sciences - Upper Austria, Wels Campus Stelzhamerstrasse 23, A-4600 Wels, Austria;

    University of Applied Sciences - Upper Austria, Wels Campus Stelzhamerstrasse 23, A-4600 Wels, Austria;

    Vienna University of Technology, Institute of Computer Graphics and Algorithms Favoritenstrasse 9-11/E186, A-1040 Wien, Austria;

    Vienna University of Technology, Institute of Computer Graphics and Algorithms Favoritenstrasse 9-11/E186, A-1040 Wien, Austria;

    University of Applied Sciences - Upper Austria, Wels Campus Stelzhamerstrasse 23, A-4600 Wels, Austria;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    computed tomography; dreamcaster; optimal specimen placement;

    机译:CT检查;播客最佳标本放置;

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