医疗卫生装备2017，Vol.38Issue(2)：11-15,5.DOI:10.7687/J.ISSN1003-8868.2017.02.011
一种基于FPGA的高频超声灰阶血流成像系统设计
Design of high-frequency ultrasound grayscale blood flow imaging system based on field programmable gate array
摘要
Abstract
Objective To develop a set of high-frequency ultrasound grayscale blood flow imaging system based on field programmable gate array (FPGA) to execute simultaneous imaging of superficial blood flow and tissues.Methods This system was mainly composed of an ultrasonic transducer,an ultrasonic transmission and receiving modules,imaging software in host computer and peripheral equipment.A PVDF transducer with the frequency between 20 and 50 MHz was used for the ultrasonic transducer.In transmission and receiving modules,the radio frequency echo signals were digitized by high-speed A/D.Then the digital signals were transmitted,added,filtered,demodulated,log amplified,double sampled,and lastly transferred to the host computer by USB interface for real-time display.Results A vascular 1 mm far form the surface of the hand skin was examined by this system.Four blood flow images were obtained in corresponding with four transmission frequencies.Conclusion Real-time superficial organ blood flow imaging is realized by this system.The solution has the architecture concise and clear,and lays an experimental foundationfor high-frequency ultrasound gray-scale blood flow imaging.关键词
超声/现场可编程门阵列/血流/灰阶/成像系统Key words
ultrasound/FPGA/blood flow/gray scale/imaging system分类
医药卫生引用本文复制引用
王晓春,计建军,杨军,王延群,周盛..一种基于FPGA的高频超声灰阶血流成像系统设计[J].医疗卫生装备,2017,38(2):11-15,5.基金项目
国家自然科学基金青年项目(61601520) （61601520）
中央级公益性科研院所基本科研业务专项资助课题(2016ZX310102,2016ZX310108) （2016ZX310102,2016ZX310108）
天津市科技计划项目(15JCZDJC327000) （15JCZDJC327000）
