Experimental and Finite-Difference Time-Domain Simulation Study of the Precise Measurement of the Gonad of a Small Fish Using a 25-MHz Acoustic Focus Probe

摘要

high-resolution imaging method Using a 25-MHz ultrasonic acoustic profile measurement was introduced, and the inner structures of Small fish were examined without body contact. Two types of fish were as experimental targets and measured using a focused probe 3-D acoustic imaging of inner and external structure, of the fish body was then performed, and the results demonstrated that the visualization, alization of main organs (e.g., stomach, intestine, airbladder, and spine) was possible and asmall gonad could be detected. In addition to these experimerit finite-difference titne-domain simulation was introduced for complex wave propagation phenomena in the fish body, providing a clear understanding of the experimental data.