Application of two segmentation protocols during the processing of virtual images in rapid prototyping: ex vivo study with human dry mandibles
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Data
2013-12-01
Autores
Ferraz, Eduardo Gomes
Safira Andrade, Lucio Costa
Santos, Aline Rode dos
Torregrossa, Vinicius Rabelo
Fischer Rubira-Bullen, Izabel Regina [UNESP]
Sarmento, Viviane Almeida
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Editor
Springer
Resumo
The aim of this study was to evaluate the accuracy of virtual three-dimensional (3D) reconstructions of human dry mandibles, produced from two segmentation protocols (outline only and all-boundary lines).Twenty virtual three-dimensional (3D) images were built from computed tomography exam (CT) of 10 dry mandibles, in which linear measurements between anatomical landmarks were obtained and compared to an error probability of 5 %.The results showed no statistically significant difference among the dry mandibles and the virtual 3D reconstructions produced from segmentation protocols tested (p = 0,24).During the designing of a virtual 3D reconstruction, both outline only and all-boundary lines segmentation protocols can be used.Virtual processing of CT images is the most complex stage during the manufacture of the biomodel. Establishing a better protocol during this phase allows the construction of a biomodel with characteristics that are closer to the original anatomical structures. This is essential to ensure a correct preoperative planning and a suitable treatment.
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Palavras-chave
X-ray computed tomography, Computer-assisted image processing, Three-dimensional imaging, Rapid prototyping
Como citar
Clinical Oral Investigations. Heidelberg: Springer Heidelberg, v. 17, n. 9, p. 2113-2118, 2013.