Ultrasonic testing on interface information of human abdominal organs

Abstract

Ultrasound imaging is a non-invasive, safe and low-cost technique for medical diagnosis and monitoring. As different tissues have different acoustic characteristics, ultrasound reflects and scatters at the interfaces. A clinical ultrasound device can position and image by extracting Time-of-Flights (TOFs). So presenting TOFs easily extracted is quite necessary. A high quality excitation signal makes the extraction of TOFs easy and accurate. The reflection case and transmission case were compared. Decrement signal and gauss signal were compared also in this paper and research target is a two-dimensional cross-section of human body model. The degree of difficulty of TOFs extraction and decay rates evaluate the signal quality. The ideal TOFs were calculated as a standard and the relative errors of the two signals were compared. Reflection case can indicate interface directly. Results demonstrate complex waveform affects the accuracy of TOFs extraction in decrement pattern.