超声剪切波成像对肝脏裂伤的仿真检测

发布时间：2018-05-06 05:16

  本文选题：超声剪切波 + 肝脏裂伤　； 参考：《系统仿真学报》2017年04期

【摘要】：超声剪切波成像技术通过检测剪切波传播实现对软组织的弹性测量。探索使用超声剪切波成像技术结合方向滤波算法实现对肝脏裂伤检测的可行性。通过COMSOL Multiphysics软件仿真剪切波的产生和在有裂伤肝脏内部的传播,用方向滤波分离入射波和破裂处反射波,并用边缘检测算法对裂伤进行定位和边缘检测。结果显示方向滤波和边缘检测算法能够检测肝裂伤位置和迎向入射波一侧边缘,误差1%。超声剪切波成像结合方向滤波技术可以避免弹性重构中对逆问题的求解,对于超声信噪比低的情况和作为辅助影像学工具提高钝性肝脏外伤的超声诊断灵敏性方面具有应用潜力。
[Abstract]:Ultrasonic shear wave imaging can measure the elasticity of soft tissue by detecting the propagation of shear wave. To explore the feasibility of detecting liver laceration using ultrasonic shear wave imaging combined with directional filtering algorithm. COMSOL Multiphysics software is used to simulate the generation of shear wave and propagation in the liver with laceration. The incident wave and the reflected wave are separated by directional filtering, and the edge detection algorithm is used to locate and detect the crack. The results show that the directional filtering and edge detection algorithms can detect the location of the liver laceration and the side edge of the incident wave with an error of 1. Ultrasonic shear wave imaging combined with directional filtering can avoid solving inverse problems in elastic reconstruction. It has potential application in low signal-to-noise ratio (SNR) of ultrasound and as an auxiliary imaging tool to improve the diagnostic sensitivity of blunt liver trauma.
【作者单位】： 辽宁石油化工大学理学院;辽宁石油化工大学信息与控制工程学院;
【基金】：国家自然科学基金(11304137) 辽宁省高校杰出青年学者成长计划(LJQ2013042)
【分类号】：R445.1;R657.3;TB559
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本文编号：1850942