NDLI: Frequency compounding of synthetic aperture ultrasound imagery using multiscale products

Content Provider	IEEE Xplore Digital Library
Author	Thomas, G. Flores-Tapia, D. Pistorius, S.
Copyright Year	2010
Description	Author affiliation: Electrical and Computer Engineering Department, University of Manitoba, Winnipeg, Canada (Thomas, G.) \|\| Department of Medical Physics, CancerCare Manitoba, Winnipeg, Canada (Flores-Tapia, D.; Pistorius, S.)
Abstract	Ultrasound waves offer good penetration in many materials and because they have the ability to detect and locate very small defects, non destructive testing based on this technology is very popular. Resolution in range is proportional to the bandwidth of the transmitted pulse but at higher frequencies noise is more prominent. Therefore, there is a tradeoff between detection accuracy and image quality. In this work, the authors propose the formation of a high resolution image based on synthetic aperture focusing that includes multiple frequency scans. By using a series of pulse-based waveforms with different bandwidths, a singularity analysis can be performed and based on wavelet decomposition and multiscale products, noise can be significantly reduced while preserving good resolution.
Starting Page	702
Ending Page	705
File Size	729951
Page Count	4
File Format	PDF
ISBN	9781424428328
ISSN	10915281
DOI	10.1109/IMTC.2010.5488260
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Ultrasonic imaging Image resolution High-resolution imaging Signal resolution Acoustic noise Bandwidth Signal to noise ratio Noise reduction Transducers multi-scale products ultrasund non destructive testing synthetic aperture imaging frequency compounding
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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