• 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) >Evaluating the Effect of Dose on Reconstructed Image Quality in Digital Tomosynthesis
【24h】

Evaluating the Effect of Dose on Reconstructed Image Quality in Digital Tomosynthesis

机译：评价剂量对数字断层合成中重建图像质量的影响

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

Breast tomosynthesis has the potential to improve lesion visibility and localization compared to conventional mammography. To be clinically useful, tomosynthesis must be able to achieve high image quality at acceptable radiation doses. Tomosynthesis data sets of simple low-contrast phantoms were acquired at varying dose levels. Image quality in the reconstructed volumes was analyzed by evaluating the voxel-to-voxel signal difference to noise ratio between a simulated lesion and the surrounding "tissue". Preliminary results indicate that image quality of small lesions is limited by scatter and reconstruction artifacts. In uniform backgrounds image quality appears to be quantum-noise limited, while in more complex backgrounds the structural noise tends to dominate.
机译：与常规乳腺X线摄影术相比，乳房断层合成术有可能改善病变的可见度和定位。为了在临床上有用，断层合成必须能够在可接受的辐射剂量下获得高图像质量。简单的低对比度体模的层析合成数据集以不同的剂量水平获得。通过评估模拟病变与周围“组织”之间的体素与体素信号差噪比，分析了重建体积中的图像质量。初步结果表明，小病变的图像质量受到散布和重建伪影的限制。在均匀的背景中，图像质量似乎受到量子噪声的限制，而在更复杂的背景中，结构噪声往往占主导地位。

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