Share Email Print
cover

Proceedings Paper

Assessment of carotid diameter and wall thickness in ultrasound images using active contours improved by a multiresolution technique
Author(s): Marco Antonio Gutierrez; Paulo Eduardo Pilon; Silvia G. Lage; Liliane Kopel; Ricardo T. Carvalho; Sergio Shiguemi Furuie
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Carotid vessel ultrasound imaging is a reliable non-invasive technique to measure the arterial morphology. Vessel diameter, intima-media thickness (IMT) of the far wall and plaque presence can be reliably determined using B-mode ultrasound. In this paper we describe a semi-automatic approach to measure artery diameter and IMT based on an active contour technique improved by a multiresolution analysis. The operator selects a region-of-interest (ROI) in a series of carotid images obtained from B-mode ultrasound. This set of images is convolved with the corresponding partial derivatives of the Gaussian filter. The filter response is used to compute a 2D gradient magnitude image in order to refine the vessel's boundaries. Using an active contour technique the vessel's border is determined automatically. The near wall media-adventitia (NWMA), far wall media-adventitia (FWMA) and far wall lumen-intima (FWLI) borders are obtained by a least-square fitting of the active contours result. The distance between NWMA and FWLI (vessel diameter) and between FWLI and FWMA (far wall intima-media thickness) are obtained for all images and the mean value is computed during systole and diastole. The proposed method is a reliable and reproducible way of assessing the vessel diameter and far wall intima-media thickness of the carotid artery.

Paper Details

Date Published: 24 April 2002
PDF: 8 pages
Proc. SPIE 4683, Medical Imaging 2002: Physiology and Function from Multidimensional Images, (24 April 2002); doi: 10.1117/12.463589
Show Author Affiliations
Marco Antonio Gutierrez, Univ. of Sao Paulo Medical School Hospital (Brazil)
Paulo Eduardo Pilon, Univ. of Sao Paulo (Brazil)
Silvia G. Lage, Univ. of Sao Paulo Medical School Hospital (Brazil)
Liliane Kopel, Univ. of Sao Paulo Medical School Hospital (Brazil)
Ricardo T. Carvalho, Univ. of Sao Paulo Medical School Hospital (Brazil)
Sergio Shiguemi Furuie, Univ. of Sao Paulo Medical School Hospital (Brazil)


Published in SPIE Proceedings Vol. 4683:
Medical Imaging 2002: Physiology and Function from Multidimensional Images
Anne V. Clough; Chin-Tu Chen, Editor(s)

© SPIE. Terms of Use
Back to Top