B型超声诊断仪声场参数的测量与计算的一种简化方法

本文概述了B型超声诊断仪声场特性的基本测量和计算方法，提出了一系列典型声压波形的瞬时声压平方函数的时间积分解析表达式，可用来近似计算脉冲声强积分和各种脉冲声强参数．对三种典型超声诊断仪的输出声压波形函数，分别进行数值积分和解析计算，两者的计算结果偏离值均小于±7．0％，表明利用这些公式可使测量过程中的数据采集和计算程序大为简化，在实际应用中具有推广价值．

A Simplified Measuring and Calculating Metbod of Sound Field Parameters of B Mode Ultrasonic Diagnostic Equipment

In the paper the basic measuring and calculting methods of the sound field parameters of B mode ultrasonic diagnostic equipments are described. Analytical expressions of the instantanous pressure square integral of several typical sound pressure waveforms are proposed for calculating approximately their pulse sound intensity integral and various pulse sound intensity parameters. Numerical integration and analytical calculation using these formulas are carried out separately for three typical sound pressure waveforms of the diagnostic ultrasonic pulse. The deviation of the calculated results is less than ±7.0%. This shows that these formulas can much simplify data acquisition and calculation in the measuring process and have value in practical applications.