首页> 外文会议>2011 IEEE International Ultrasonics Symposium >Multi-Push (MP) ARF assessment of viscoelastic properties in a tissue mimicking phantom effect of time separation
【24h】

Multi-Push (MP) ARF assessment of viscoelastic properties in a tissue mimicking phantom effect of time separation

机译:多次按压(MP)ARF评估组织中的粘弹性质,模拟时间间隔的幻像效应

获取原文
获取原文并翻译 | 示例

摘要

We present a new approach to differentiating the viscoelastic properties of tissue, Multi-Push Acoustic Radiation Force (MP ARF) ultrasound, in which displacements achieved by successive ARF excitations are compared to qualitatively assess viscoelastic tissue parameters. We evaluate the MP ARF measures of marginal peak displacement (MPD) in four tissue-mimicking phantoms using different time separations between successive excitations. A time separation of 0.4 ms between excitations yielded the best contrast when differentiating between a phantom with low stiff, low viscosity and a phantom with high stiffness, low viscosity. Similarly, 0.4 ms between excitations gave the best MPD contrast between a phantom with low stiffness, low viscosity and a phantom with low stiffness, high viscosity. A time separation of 1.2 ms gave the optimal separation when differentiating between a phantom with high stiffness, low viscosity and a phantom with high stiffness, high viscosity. MPD was also shown to be is less depth-dependent than first peak displacement.
机译:我们提出了一种区分组织粘弹性特性的新方法,即多推声辐射力(MP ARF)超声,其中比较了连续ARF激发所实现的位移,以定性评估粘弹性组织参数。我们使用连续激励之间的不同时间间隔,评估了四个组织模仿体模中边缘峰位移(MPD)的MP ARF量度。区分低刚度,低粘度的体模和高刚度,低粘度的体模时,激发之间的时间间隔为0.4 ms,可产生最佳对比度。类似地,激发之间的0.4 ms在低刚度,低粘度的体模和低刚度,高粘度的体模之间提供了最佳的MPD对比度。当区分具有高刚度,低粘度的体模和具有高刚度,高粘度的体模时,1.2 ms的时间间隔可实现最佳分离。还显示出MPD的深度依赖性小于第一个峰值位移。

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