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对包膜超声造影剂 (ultrasoundcontrastagents ,以下简称UCA)的非线性特性进行了理论分析与模型仿真研究 ,对比研究了不同尺寸的理想气泡和包膜微气泡在不同频率超声场中的基波与谐波散射特性 ,研究结果对UCA的制备及其应用技术有重要价值 .UCA谐波特性实验结果直观地反映了白蛋白超声造影剂显著的非线性特性 ,该特性将为医学超声成像技术和相应基础研究开拓新的领域 .
The nonlinear characteristics of ultrasound contrast agents (UCA) were analyzed theoretically and the simulation of the model was carried out. The fundamental wave harmonics of different sizes of ideal bubbles and envelope microbubbles in ultrasonic fields with different frequencies were compared Wave scattering characteristics of the UCA preparation and application of the technology has important value.UCA harmonic characteristics of the experimental results intuitively reflect the significant nonlinear characteristics of albumin ultrasound contrast agent, the characteristics of medical ultrasound imaging technology and the corresponding basis Research and develop new areas.