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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。
Ultrasonic shear wave imaging technology to detect the shear wave propagation to achieve soft tissue elasticity measurement. Explore the feasibility of using ultrasonic shear wave imaging combined with directional filtering algorithm to detect liver laceration. COMSOL Multiphysics software was used to simulate the generation of shear wave and propagation in the livers with laceration. Directional filtering was used to separate the incident wave from the reflected wave at the rupture. The edge detection algorithm was used to locate and detect the laceration. The results show that the directional filtering and edge detection algorithm can detect the location of liver injury and the edge of the incoming wave, the error <1%. Ultrasound shear wave imaging combined with directional filtering can avoid the inverse problem in elastic reconstruction and has potential applications in the field of low signal to noise ratio and as an auxiliary imaging tool to improve the diagnostic sensitivity of blunt liver injury.