NDLI: A Transient Elastography System for Soft-Tissue Stiffness Measurement and Wavelet De-Noising of Displacement Estimation in Elastogram

Content Provider	IEEE Xplore Digital Library
Author	Chen Xu Hui Yao Tao Ling Hairong Zheng
Copyright Year	2010
Abstract	Elastography is an emerging ultrasonic imaging technique. A system based on transient elastography is built to measure biological tissues' stiffness in the paper. Then, wavelet de-noising of the displacement estimatation to reduce artifacts due to high overlap in transient elastography is presented. High overlap between data segments is essential to improve axial resolution in transient elastography. However, overlap more than 90% or more causes the increase of correlated errors, which in turn generate "worm" artifact in strain. Wavelet de-noising can reduce errors in the displacement estimates strikingly by thresholding the wavelet coefficients, therefore reducing the worm artifact. The strain results from tissue-mimicking phantoms, illustrates the improvement in the elastogram by wavelet de-noising algorithm.
Starting Page	1
Ending Page	4
File Size	419474
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5517233
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 Ultrasonic imaging Noise reduction Biological tissues Displacement measurement Imaging phantoms Capacitive sensors Biomedical measurements Wavelet coefficients Biomedical engineering
Content Type	Text
Resource Type	Article

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