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第 37 卷 第 6 期 Vol. 37, No.6
2018 年 11 月 Journal of Applied Acoustics November, 2018

⋄ 研究报告 ⋄

基于FPGA的高强度聚焦超声相位控制系统设计 ∗

张 浩 张艳秋 赵梦娟 菅喜岐 †

(天津医科大学生物医学工程与技术学院 天津 300070)

摘要 多阵元相控阵换能器具有焦距可调和可实现经颅聚焦等优势，近来受到众多研究者的关注，其相位控
制系统是决定多阵元相控换能器能否应用于临床的关键技术之一。在输出信号稳定的同时提高高强度聚焦超
声相位控制系统精度是设计过程中的重点与难点。本文基于现场可编程门阵列设计了一种高强度聚焦超声相
位控制系统。实测结果表明，多通道延时分辨率为 1 ns，延时误差小于 1 ns，可满足多阵元高强度聚焦超声治
疗相控聚焦换能器延时精度的需要。
关键词 高强度聚焦超声，相控阵换能器，相位控制系统，延时分辨率，现场可编程门阵列
中图法分类号: R318 文献标识码: A 文章编号: 1000-310X(2018)06-0855-06
DOI: 10.11684/j.issn.1000-310X.2018.06.004

Design of high intensity focused ultrasound phase control system

based on FPGA

ZHANG Hao ZHANG Yanqiu ZHAO Mengjuan JIAN Xiqi

(Department of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070, China)

Abstract Multi-element phased array transducer has the advantages of adjustable focal length and tran-
scranial focusing, and has recently attracted the attention of many researchers. The phase control system of
the multi-element phased transducer is one of the key technologies for determining whether the multi-element
phased phase transducer can be applied to the clinic. Increasing the accuracy of the high intensity focused
ultrasound (HIFU) phase control system while the output signal is stable is a key and difficult point in the
design process. A HIFU phase control system is designed based on field-programmable gate array (FPGA).
The measured results show that the multi-channel delay resolution is 1 ns and the delay error is less than 1 ns,
which can meet the needs of multi-element HIFU for phased-focus transducers.
Key words High intensity focused ultrasound, Phased-array focusing transducer, Phase control system,
Delay resolution, Field-programmable gate array

2018-03-01 收稿; 2018-05-01 定稿
天津市自然科学基金重点项目 (16JCZDJC32200), 天津医科大学科技成果转化项目
∗
作者简介: 张浩 (1993- ), 男, 天津人, 硕士研究生, 研究方向: 超声医学。
† 通讯作者 E-mail: jianxiqi@tmu.edu.cn