NDLI: The Circuit Design for a Transient Elastography System and Its Improvement Design

Content Provider	IEEE Xplore Digital Library
Author	Yanming Li Hui Yao Shizhuang Liu Hao Xiong Chen Xu Hairong Zheng
Copyright Year	2010
Abstract	Elastography is an emerging ultrasonic imaging technique; it has a broad clinical application for tissue parameter estimation. We designed a real-time system to measure tissue stiffness information non-invasively based on transient elastography. The system performance mainly depends on the circuit design before the Analog-to-Digital Converter (A/D), especially the preamplifier part which is very sensitive to the noise. How to improve the signal-to-noise (SNR) is the key factor for the system design. In this paper, the Time Gain Control (TGC) design is discussed as an example of the circuit design. Displacement tracking algorithm based on correlation techniques and differentiation are applied to Radio frequency (RF) signals from tissues mimicking phantom and in vivo experiments; the young's modulus of the tissue is estimated from the strain images. The influences of the SNR to the strain image quality are discussed. At the end, an improvement based on the AD9272 is proposed.
Starting Page	1
Ending Page	4
File Size	397339
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5516105
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Real time systems Ultrasonic imaging Parameter estimation Ultrasonic variables measurement System performance Capacitive sensors Preamplifiers Circuit synthesis Analog-digital conversion
Content Type	Text
Resource Type	Article

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