NDLI: Automatic segmentation of carotid B-mode images using fuzzy classification

Content Provider	Springer Nature Link
Author	Rocha, Rui Silva, Jorge Campilho, Aurélio
Copyright Year	2012
Abstract	This paper presents a new method for the automatic segmentation of the common carotid artery in B-mode images. This method uses the instantaneous coefficient of variation edge detector, fuzzy classification of edges and dynamic programming. Several discriminating features of the intima and adventitia boundaries are considered, like the edge strength, the intensity gradient orientation, the valley shaped intensity profile and contextual information of the region delimited by those boundaries. The adopted fuzzy classification of edges helps avoiding low-pass filtering. The method is suited to real-time processing and user interaction is not required. Both the near and far wall boundaries can be detected in arteries with plaques of different types and sizes. Both expert manual and automatic tracings are significantly better for the far wall, due to the better visibility of the intima and adventitia boundaries. The automatic detection of the far wall shows an accuracy similar to the manual detections. For this wall, the error coefficient of variation for the mean intima-media thickness is in the range [5.6, 6.6 %] for automatic detections and in [6.7, 7.1 %] for manual ones. In the case of the near wall, the same coefficient of variation is in [11.2, 13.0 %] for automatic detections and in [5.9, 9.0 %] for manual detections. The mean intima-media thickness measurement errors observed for the far wall $$([0.15,0.17]\,\hbox{mm},\;[1.7,1.9]\,\hbox {pixel})$$ are among the best values reported for other fully automatic approaches. The application of this approach in clinical practice is encouraged by the results for the far wall and the short processing time (mean of 2.1 s per image).
Starting Page	533
Ending Page	545
Page Count	13
File Format	PDF
ISSN	01400118
Journal	Medical and Biological Engineering and Computing
Volume Number	50
Issue Number	5
e-ISSN	17410444
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-03-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ultrasound image Carotid Image segmentation Dynamic programming Fuzzy edge detection Biomedical Engineering Human Physiology Computer Applications Imaging Radiology
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering Computer Science Applications

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