Dimensão volumétrica na região alveolar da fissura labiopalatina obtida pela análise da imagem tomográfica computadorizada com o software Image J

• Ano de defesa: 2008
• Autor(a) principal: Picolli, Patricia
• Orientador(a): Brücker, Marcia Rejane
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: ODONTOLOGIA; TOMOGRAFIA COMPUTADORIZADA; FISSURA LABIOPALATAL; ORTOPEDIA FACIAL
• Link de acesso: http://hdl.handle.net/10923/549

Computed tomography (CT) scan has been evidenced, in scientific works, that show its clinical use, superior quality of image and accuracy in measurements of facial bones. However, its utility in the evaluation of craniofacial anomalies does not depend only on the accuracy of the method, but also on its reproducibility between different raters. This study evaluated the capacity of a public domain biomedical software in delimiting the inherent defect to the alveolar clefts and measure its initial volume. The sample consisted of CT scans of twenty one patients with complete clefts (lip, alveolus and palate), being thirteen boys and eight girls, with a mean age of ten years and five months. DICOM archives were accessed from CD-R by means of software IMAGE J 1. 38 downloaded in a personal computer. After the importation of images sequence, all those slices which corresponded to the region of interest for each patient were selected. The delineations and its respective measurements were done. The results demonstrated the mean cleft volume of the sample was 0. 77± 0. 17 cm³. In the evaluation of the method intrarater and interrater reliability, 95. 2% and 90. 5% of agreement, respectively, were achieved. It was verified that the delimitation of the alveolar clefts is possible in computed tomography images by means of software Image J 1. 38, as well as the volumetric calculation of the delimited area.