• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Workshop on Digital Mammography(IWDM 2006); 20060618-21; Manchester(GB) >The Dependence of Tomosynthesis Imaging Performance on the Number of Scan Projections
【24h】

The Dependence of Tomosynthesis Imaging Performance on the Number of Scan Projections

机译：断层合成成像性能对扫描投影数量的依赖性

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In general, the use of more projections results in fewer tomosynthesis reconstruction artifacts. However, under a fixed dose, an excess number of projections will make the detector noise more pronounced in each of the x-ray shots and thus degrade image quality. Even in the absence of detector noise the advantages of higher projection numbers eventually have diminishing returns, making more projections unnecessary. In this study, we explore the dependence of tomosynthesis imaging performance on the number of projections, while keeping other factors fixed. We take the contrast-to-noise ratio as the figure of merit to search for the range of optimal projection number. The study is carried out through both simulations and experiments, with phantoms consisting of micro-calcification and mass objects, and a cadaver breast. The goal of this paper is to describe our methodology in general, and use a prototype tomosynthesis system as an example. The knowledge learned will help the design of future generation clinical tomosynthesis systems.
机译：通常，使用更多的投影会导致更少的断层合成重建伪像。但是，在固定剂量下，过多的投影将使检测器噪声在每个X射线照片中更加明显，从而降低图像质量。即使没有探测器噪声，较高投影数的优势最终也会使收益递减，从而使不必要进行更多投影。在这项研究中，我们探索了断层合成成像性能对投影数量的依赖性，同时保持其他因素不变。我们将对比度和噪声比作为品质因数，以寻找最佳投影数的范围。该研究是通过模拟和实验进行的，模型包括微钙化和块状物体以及尸体乳房。本文的目的是一般性地描述我们的方法，并以原型层析合成系统为例。所学到的知识将有助于设计下一代临床断层合成系统。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号