NDLI: Reverberation artifact rejection and masking in arterial ARFI imaging

Content Provider	IEEE Xplore Digital Library
Author	Behler, R.H. Scola, M.R. Gallippi, C.M.
Copyright Year	2009
Description	Author affiliation: Department of Biomedical Engineering, University of North Carolina at Chapel Hill, USA (Behler, R.H.; Scola, M.R.; Gallippi, C.M.)
Abstract	In arterial ultrasound imaging, interpretation of plaque geometry may be distorted by reverberation artifacts in the lumen. Reverberation and arterial wall signals may be highly correlated, which precludes frequency domain or conventional regression filtering methods; however, decorrelation and rates vary. The variance of time derivatives in 1D axial cross-correlation (CC) and displacement (Disp) measures were exploited to reject the arterial lumen and reverberation artifact. Adaptively determined thresholds were applied to the variance of either individual or spatially clustered ARFI displacement profiles. The resulting binary masks were applied in vivo to six porcine arteries with varying degrees of reverberation artifact. Mask performance was measured as the percentage of the lumen rejected given at least 98% of each arterial wall remaining intact. The highest performing masks used the variance of the 2nd derivative of displacement or correlation with spatial clustering to preserve both arterial wall and soft tissue signals.
Starting Page	2367
Ending Page	2370
File Size	3945636
Page Count	4
File Format	PDF
ISBN	9781424443895
ISSN	19485727
DOI	10.1109/ULTSYM.2009.5441497
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-20
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reverberation Arteries Ultrasonic imaging Geometry Frequency domain analysis Filtering Decorrelation Distortion measurement Displacement measurement Time measurement masking ARFI atherosclerosis reverberation
Content Type	Text
Resource Type	Article

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