• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Evaluation of Reconstruction Parameters for 2-D Comb-Push Ultrasound Shear Wave Elastography
【24h】

Evaluation of Reconstruction Parameters for 2-D Comb-Push Ultrasound Shear Wave Elastography

机译：二维梳状超声剪切波弹性成像重建参数的评估

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

Shear wave elastography (SWE) is a noninvasive ultrasound imaging modality used in the assessment of the mechanical properties of tissues such as the liver, kidney, skeletal muscle, thyroid, and the breast. Among the methods used to perform SWE is the comb-push ultrasound shear elastography method. This method uses multiple focused ultrasound beams to generate push beams with acoustic radiation force. Applying these push beams generates propagating shear waves. The propagation motion is measured with ultrafast ultrasound imaging. The shear wave motion data are directionally filtered, and a 2-D shear wave velocity (SWV) algorithm is applied to create group velocity maps. This algorithm uses a moving window and a specified patch for performing cross-correlations of time-domain signals. We performed a parametric study of how the choice of the patch and window size affected the reconstruction of the SWV in homogeneous and inclusion phantoms. We quantified the mean velocity and coefficient of variation in the homogeneous phantoms. We measured the contrast-to-noise ratio and bias in the inclusion phantoms. In each of these cases, we found that particular combinations of the patch and window provided optimal values of these evaluation metrics for the phantoms tested. This study provides a basis to construct algorithms to produce optimal SWV reconstructions for various clinical applications.
机译：剪切波弹性成像（SWE）是用于评估组织（如肝脏，肾脏，骨骼肌，甲状腺和乳房）的机械特性的超声成像技术。用于执行SWE的方法中有梳推式超声剪切弹性成像法。该方法使用多个聚焦超声束生成具有声辐射力的推力束。施加这些推动梁会产生传播的剪切波。传播运动是用超快超声成像测量的。对剪切波运动数据进行方向滤波，然后应用二维剪切波速度（SWV）算法创建组速度图。该算法使用移动窗口和指定的补丁来执行时域信号的互相关。我们进行了参数研究，研究了斑块和窗口大小的选择如何影响均质和包容体模中SWV的重建。我们量化了均模中的平均速度和变异系数。我们测量了包含体模中的对比噪声比和偏差。在每种情况下，我们发现补丁和窗口的特定组合为测试的体模提供了这些评估指标的最佳值。这项研究为构建算法以为各种临床应用提供最佳SWV重建提供了基础。

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