Development of Rapid Performance Testing System for Medical
Ultrasonic Probes Based on Echo Amplitude Signal
YANG Lin1,2, HU Haiyang1, LU Yang1
1. Department of Medical Engineering, The First Affiliated Hospital of Soochow University, Suzhou Jiangsu 215006, China;
2. School of Biological Science and Medical Engineering, Southeast University, Nanjing Jiangsu 210000, China
Abstract：Objective Aim to develop a rapid performance testing system for medical ultrasonic probe array element based on echo
amplitude signals, to evaluate the performance and quality control of ultrasonic probes. Methods The field programmable gate array
was used as the main control chip of the system to control the integrated electric pulse excitation signal source inside the system,
thereby to stimulate the array elements of medical ultrasonic probes. After the vibration of the array element, ultrasonic waves
were generated and reflected when encountering air. Based on the ultrasonic pulse echo testing method, the echo amplitude was the
main detection parameter to achieve the detection and evaluation of the working state of the ultrasonic probe array
element. Results Selected probes of the same model with different service life and fault status for system testing and compared
them with the obtained ultrasound images. The echo amplitude signal of the brand new intact probe was concentrated
between 550 mV and 575 mV, with an overall error of less than 0.5 dB. The echo amplitude signal of the probe used for one year
was concentrated between 550 mV and 590 mV, which was about 0.6 dB lower than the overall error of the new probe. There were
varying degrees of attenuation in the amplitude signal of the probe echo after 3 years of use, such as more than ten 3 dB, 6 dB, and
some 10 dB. There were more than thirty continuously attenuated 10 dB array elements in the faulty probe. The attenuation position
and degree of the probe correspond to the defect position and degree of the resulting ultrasound image. Conclusion This system has
the characteristics of high sensitivity, good stability, simple and fast operation, and has strong practical application and promotion
value in the performance evaluation of ultrasonic probe array elements.
杨林1,2，胡海洋1，陆阳1. 基于回波幅值信号的医用超声探头
性能快速检测系统的研制[J]. 中国医疗设备, 2024, 39(2): 39-44.
YANG Lin1,2, HU Haiyang1, LU Yang1. Development of Rapid Performance Testing System for Medical
Ultrasonic Probes Based on Echo Amplitude Signal. China Medical Devices, 2024, 39(2): 39-44.
