NDLI: M-line processing for real-time investigation of large artery mechanics

Content Provider	IEEE Xplore Digital Library
Author	Morganti, T. Ricci, S. Guidi, F. Della Valle, A. Tortoli, P. Vittone, F. Kozakova, M. Palombo, C.
Copyright Year	2003
Description	Author affiliation: Florence Univ., Firenze, Italy (Morganti, T.; Ricci, S.; Guidi, F.; Della Valle, A.; Tortoli, P.)
Abstract	This paper describes the application of an integrated ultrasound (US) system to real-time detection of both blood velocity profile and wall displacements in human arteries. The system simultaneously processes the echo-signals generated from the walls as well as from red blood cells. Wall velocity is detected through the modified autocorrelation algorithm, while the blood velocity profile is obtained through spectral analysis. The system was preliminarily tested in the common carotid arteries of a small group of volunteers. In each case, blood flow behaviour was first checked by detecting the velocity profile inside the vessel. The most appropriate transducer position for vessel wall interrogation was rapidly found by observing in real-time both the velocity profile and the displacements of anterior and posterior walls, which are automatically tracked by the system. The diameter distension was measured in 24 subjects (15 normal volunteers and 9 patients with major risk factors for atherosclerosis). The average distension turned out to be in the range 0.11 - 1.02 mm, with a typical standard deviation within measurement epochs of 26 /spl mu/m.
Starting Page	1590
Ending Page	1593
File Size	1848680
Page Count	4
File Format	PDF
ISBN	0780379225
DOI	10.1109/ULTSYM.2003.1293212
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Ultrasonic imaging Humans Red blood cells Autocorrelation Spectral analysis System testing Carotid arteries Blood flow Transducers
Content Type	Text
Resource Type	Article

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