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Advisor(s)
Abstract(s)
O calibre da artéria aorta torácica é avaliado em situações de suspeita de patologia
ou em pacientes com pre-disposição para desenvolverem doenças vasculares. A
medição das suas dimensões, em duas direcções diametralmente opostas e, assim,
fulcral na avaliação desta estrutura. Para tal, o exame de primeira linha definido é a
Angiografia por Tomografia Computorizada (Angio-TC), injectando-se um produto
de contraste na veia radial que irá opacificar os vasos, permitindo a sua distinção
das estruturas adjacentes. O presente trabalho, inserido na disciplina de Dissertação/ Projecto/ Estágio Profissional do Mestrado em Engenharia de Computação
e Instrumentação Médica e com a cooperação da empresa Efficientia, foi sugerido
pela equipa de Angio-TC do Centro Hospitalar de Vila Nova de Gaia (CHVNG)
e tem por objectivo o desenvolvimento de uma aplicação para a medição e registo
automático do diâmetro da aorta torácica em nove pontos anatómicos pre-definidos
em imagens de Tomografia Computorizada (TC). A aplicação foi desenvolvida no
ambiente integrado de processamento e análise de imagem, Fiji, sendo a metodologia
composta pelas etapas de segmentação, desenho da linha central, determinação dos
planos de cortes, segmentação e medição da aorta nos planos de corte. Os resultados
obtidos pela metodologia proposta são concordantes com os obtidos por especialistas
para o conjunto de teste utilizado neste trabalho.
The thoracic aorta artery caliber is assessed whenever there is possible pathology or in patients with a predisposition to develop vascular disease. Aorta diameter measurement, in two diametrically opposed directions, is crucial in the evaluation of this structure. The current rst-line exam for this assessment is the CT angiography (CTA), where a radiopaque contrast is injected in the radial vein which will enhance the vascular system from the adjacent structures. The present work, which is inserted in the Thesis/ Project/ Professional Internship subject of the Medical Computation and Instrumentation Engineering Masters, with the cooperation of E cientia company, was suggested by the CTA team of the Vila Nova de Gaia Hospital Center. It aims at the automatic measurement and registering of thoracic aorta diameter at nine pre-de ned anatomic points in CT images. The application was developed on an integrated ambience of processing and image analysis, Fiji, and the methodology is composed by stages like segmentation, centerline drawing, cutting planes determination and measurement of aorta on the cutting planes. The results obtained by the proposed methodology are concordants with those obtained by specialists on the test set used in this work.
The thoracic aorta artery caliber is assessed whenever there is possible pathology or in patients with a predisposition to develop vascular disease. Aorta diameter measurement, in two diametrically opposed directions, is crucial in the evaluation of this structure. The current rst-line exam for this assessment is the CT angiography (CTA), where a radiopaque contrast is injected in the radial vein which will enhance the vascular system from the adjacent structures. The present work, which is inserted in the Thesis/ Project/ Professional Internship subject of the Medical Computation and Instrumentation Engineering Masters, with the cooperation of E cientia company, was suggested by the CTA team of the Vila Nova de Gaia Hospital Center. It aims at the automatic measurement and registering of thoracic aorta diameter at nine pre-de ned anatomic points in CT images. The application was developed on an integrated ambience of processing and image analysis, Fiji, and the methodology is composed by stages like segmentation, centerline drawing, cutting planes determination and measurement of aorta on the cutting planes. The results obtained by the proposed methodology are concordants with those obtained by specialists on the test set used in this work.
Description
Keywords
Aorta TC Fiji
Citation
Publisher
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto