DocumentCode :
3539521
Title :
Implementation and comparison of four different boundary detection algorithms for quantitative ultrasonic measurements of the human carotid artery
Author :
Gustavsson, T. ; Abu-Gharbieh, R. ; Hamarneh, G. ; Liang, Q.
Author_Institution :
Appl. Electron., Chalmers Univ. of Technol., Goteborg, Sweden
fYear :
1997
fDate :
7-10 Sep 1997
Firstpage :
69
Lastpage :
72
Abstract :
In this paper we examine four algorithms for automated ultrasonic boundary detection, and describe the application of these algorithms to the quantification of the intima-media thickness (IMT) in the human carotid artery. The first algorithm uses a dynamic programming approach to identify the boundary that minimizes a certain cost function. The second algorithm is based on finding points of maximum gradient. The third algorithm employs a mathematical model describing the intensity profile perpendicular to the two boundaries defining the IMT. The last algorithm is based on defining a template representing the intensity profile across boundary and applying a matched filter procedure to find the image region that best matches it. The authors also present a quantitative and qualitative comparison between the four algorithms examined. It is shown that the dynamic programming algorithm provides superior performance in terms of accuracy and robustness. The correlation coefficients between automated measurements and manually obtained reference values were 0.96, 0.94, 0.63, and 0.85 for the dynamic programming, the maximum gradient the model-based, and the matched filter algorithm, respectively (n=30)
Keywords :
acoustic signal processing; biomedical ultrasonics; dynamic programming; edge detection; matched filters; medical image processing; ultrasonic measurement; automated measurements; boundary detection algorithms; correlation coefficients; cost function minimization; human carotid artery; image region; intensity profile; intima-media thickness quantification; matched filter procedure; mathematical model; maximum gradient points; medical diagnostic imaging; quantitative ultrasonic measurements; Carotid arteries; Cost function; Detection algorithms; Dynamic programming; Heuristic algorithms; Humans; Matched filters; Robustness; Thickness measurement; Ultrasonic variables measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers in Cardiology 1997
Conference_Location :
Lund
ISSN :
0276-6547
Print_ISBN :
0-7803-4445-6
Type :
conf
DOI :
10.1109/CIC.1997.647832
Filename :
647832
Link To Document :
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