NDLI: Real time intravascular ultrasound elastography with rotating single element transducers

Content Provider	IEEE Xplore Digital Library
Author	Perrey, C. Neumann, T. Bojara, W. Holt, S. Ermert, H.
Copyright Year	2002
Description	Author affiliation: Inst. of High Frequency Eng., Ruhr Univ. Bochum, Germany (Perrey, C.; Neumann, T.)
Abstract	Intravascular Ultrasound (IVUS) is the gold standard for imaging the morphology of plaques in coronary arteries, but conventional B-mode images do not give sufficient information for plaque characterization. It has been shown that Elastography (strain imaging) with I'VUS can differentiate between soft and hard plaques. This work presents a system for IVUS Elastography using rotating single element transducers. It is capable of calculating and displaying strain images in real time. A time efficient strain estimation algorithm was adapted for use with IVUS, custom made hardware was developed for rf-data acquisition. Phantom studies and in vitro experiments with carotid arteries were conducted to verify this approach. The performance of the strain estimation under the influence of artifacts due to catheter angulation was also assessed. The results show that elastography is feasible with single element transducers. Local strains of up to 2% can be estimated. With different catheter angulations a mean normalized correlation coefficient >0.8 is obtained without correction in angular direction.
Sponsorship	Ultransonics Ferroelectr., & Frequency Control Soc
Starting Page	1913
Ending Page	1916
File Size	628716
Page Count	4
File Format	PDF
ISBN	0780375823
ISSN	10510117
DOI	10.1109/ULTSYM.2002.1192672
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultrasonic imaging Ultrasonic transducers Capacitive sensors Catheters Gold Morphology Arteries Hardware Imaging phantoms In vitro
Content Type	Text
Resource Type	Article

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