A Computer-Controlled FPGA-Based Pulser/Receiver System for Ultrasound Instrumentation

被引:0
|
作者
Assef, Amauri Amorin [1 ]
Contieri, Ednilson de Souza [2 ]
Kanashiro, Gilson Maekawa [2 ,3 ]
Freitas Kohler, Michel Andrey [2 ]
Maia, Joaquim Miguel [4 ]
Costa, Eduardo Tavares [5 ,6 ]
机构
[1] Fed Univ Technol Parana UTFPR, Grad Sch Elect Engn & Appl Comp Sci CPGEI, DAELT, Curitiba, Parana, Brazil
[2] Fed Univ Technol Parana UTFPR, Grad Sch Elect Engn & Appl Comp Sci CPGEI, Curitiba, Parana, Brazil
[3] Fed Inst Parana IFPR, Paranavai, Brazil
[4] Fed Univ Technol Parana UTFPR, Grad Sch Elect Engn & Appl Comp Sci CPGEI, DAELN, Curitiba, Parana, Brazil
[5] State Univ Campinas UNICAMP, DEEB, FEEC, Campinas, Brazil
[6] State Univ Campinas UNICAMP, CEB, Campinas, Brazil
来源
2024 IEEE UFFC LATIN AMERICA ULTRASONICS SYMPOSIUM, LAUS | 2024年
关键词
ultrasound; arbitrary waveform generator; pulse-amplitude modulation;
D O I
10.1109/LAUS60931.2024.10553121
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Developing novel ultrasound methods for biomedical investigations typically requires costly instruments, which are not always available in research laboratories. This paper describes the implementation of a flexible computer-controlled FPGA-based pulser/receiver (P/R) system for ultrasound research. The system's main features are limited dimensions, the capability to generate complex waveforms using the Pulse Width Modulation (PWM) technique, and direct access to raw data. The proposed system was characterized in the first evaluation by measuring the central frequency and bandwidth of the output waveforms generated using a 5 MHz transducer. A 3-cycle 5 MHz sinusoidal excitation pulse with the Hanning window and a 5 mu s chirp pulse from 3 to 7 MHz with the Tukey window were applied. Next, phantom experiments were performed using a 1.6 MHz transducer to measure the resolution of 15 targets with 1 mm diameter and 10 mm apart in the axial direction using the FWHM method. The results demonstrate that the P/R system can be used for medical ultrasound research and instrumentation, including piezoelectric transducer driver, high-intensity focused ultrasound (HIFU), non-destructive testing (NDT), and pulse waveform generator.
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页数:4
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