A novel automatic algorithm for the segmentation of the lumen of the carotid artery in ultrasound B-mode images

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2012

Autores

André M. F. Santos (Autor) Outra; João Manuel R. S. Tavares (Autor) FEUP; Luísa Sousa (Autor) Outra; Rosa Santos (Autor) Outra; Pedro Castro (Autor) Outra; Elsa Azevedo (Autor) Outra

Ata de Conferência Internacional

Título: Proceedings ICEM15 - 15th International Conference on Experimental Mechanics

ICEM15 - 15th International Conference on Experimental Mechanics

Porto, 22-27 July 2012

Indexação

ISI Web of Knowledge - 0 Citações

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-005-K6J

Abstract (EN): A new algorithm is proposed for the identification and segmentation of the lumen and bifurcation boundaries of the carotid artery in 2D longitudinal ultrasound B-mode images. It uses the hipoechogenic characteristics defining the lumen of the carotid for its identification and echogenic characteristics for the identification of the bifurcation. The input image is preprocessed with the application of an anisotropic diffusion filter for speckle removal, and morphologic operators for the detection of the artery. This information is then used for the definition of two initial contours, one corresponding to the lumen and the other to the bifurcation boundaries, for the posterior application of the Chan-Vese level set model. A set of longitudinal B-mode images of the CCA was acquired, using a GE Healthcare Vivide ultrasound system, with 256 gray levels. All these images include a part of the CCA and the bifurcation that separates the CCA into the ICA and ECA. In order to achieve robustness in our acquisitions, with the highest contrast and lowest speckle noise levels as possible, the parameter settings of the scanner were different for each acquisition according to the associated image characteristics. We were able to successfully apply a carotid segmentation technique based on cervical ultrasonography. The main advantage of our segmentation method relied on the automatic identification of the carotid lumen, overcoming the limitations of traditional methods.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 20