创新型多频超声探头特性的设计与分析

Design and analysis of innovative multi-frequency ultrasonic probe characteristics.

作者信息

Song Yu-Lin, Lin Tzu-Zin, Tu Shih Hsun, Stiegler Alexander

机构信息

Department of Computer Science and Information Engineering, Asia University, Taichung, 413, Taiwan.

Department of Bioinformatics and Medical Engineering, Asia University, Taichung, 413, Taiwan.

出版信息

Sci Rep. 2025 Jul 1;15(1):21088. doi: 10.1038/s41598-025-07817-6.

DOI:10.1038/s41598-025-07817-6

PMID:40596354

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12218062/

Abstract

This study presents the development of a novel multifrequency ultrasound probe distinguished by its broad bandwidth and high sensitivity. A comprehensive investigation was conducted using theoretical analysis, numerical simulations, and experimental validation to characterize the probe's multiband performance through the effective electromechanical coupling coefficient (ECCt). The probe satisfies the bandwidth requirements for skin tissue detection, demonstrating potential for applications such as automated injections. Finite element simulations were employed to determine the resonance conditions of the layered piezoelectric structure, informing the probe's design and fabrication process. Impedance analysis identified resonant frequencies at 1.70, 2.44, 3.10, 4.53 and 7.16 MHz. The probe exhibited a linear acoustic response exceeding 5 MPa and achieved an electromechanical coupling coefficient below 0.5, underscoring its superior penetration capability and overall performance.

摘要

本研究展示了一种新型多频超声探头的研制，其特点是带宽宽、灵敏度高。通过理论分析、数值模拟和实验验证进行了全面研究，以通过有效机电耦合系数（ECCt）表征探头的多频段性能。该探头满足皮肤组织检测的带宽要求，显示出在自动注射等应用中的潜力。采用有限元模拟来确定层状压电结构的共振条件，为探头的设计和制造过程提供依据。阻抗分析确定了1.70、2.44、3.10、4.53和7.16 MHz的共振频率。该探头呈现出超过5 MPa的线性声学响应，机电耦合系数低于0.5，突出了其卓越的穿透能力和整体性能。