NDLI: Medical high-frequency ultrasound imaging using Golay-coded pulse excitation

Content Provider	IEEE Xplore Digital Library
Author	Sheng Zhou Xiaochun Wang Qingsheng Ye Jun Yang Jianjun Ji Yanqun Wang
Copyright Year	2012
Description	Author affiliation: Inst. of Biomed. Eng., Chinese Acad. of Med. Sci., Tianjin, China (Sheng Zhou; Xiaochun Wang; Qingsheng Ye; Jun Yang; Jianjun Ji; Yanqun Wang)
Abstract	This paper combined the coded excitation with the technique of ophthalmic high-frequency ultrasonic imaging, and proposed a new high-velocity data detection and signal processing method. 16-bit Golay complementary sequences were produced by FPGA, which excited the probe to produce ultrasonic waves. Data detection circuit achieved the digitalized of the 15 MHz high-frequency ultrasonic echo signals in real time. Sampling rate was 120MHz, and sampling bit was 14 bit. Decoded compression arithmetic was realized by FPGA in real time, in which A code compression was alternated with B code compression. The return echo was correlated with the corresponding decode filter A and filter B respectively, and then the echo was delayed and summed to complete the decoding process. The experiment indicated that coded excitation can effectively increase the range of mainlobe and decrease the range of sidelobe. This technique can effectively raise the signal-to-noise ratio, and has significant research value in advancing the ophthalmic ultrasonic image quality and raising the safety of the equipment.
Starting Page	71
Ending Page	75
File Size	377613
Page Count	5
File Format	PDF
ISBN	9781467311830
e-ISBN	9781467311847
DOI	10.1109/BMEI.2012.6513104
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	excitation imaging FPGA decoded compression ultrasound
Content Type	Text
Resource Type	Article

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