AplicaÃÃes da computaÃÃo grÃfica à engenharia biomÃdica : ensino em neurociÃncias e ferramenta de apoio ao estudo da deglutiÃÃo

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This thesis applies computer graphics to two important fields of Biomedical Engineering. Firstly, in order to provide new software for interdisciplinary education, an interactive Virtual-based platform was developed, presenting a tridimensional visualization of the neuron and of its major microestructures. Such platform enables an overall view of the neural cell, including particular details in a microcellular level. Several issues regarding the tridimensional reconstruction of neuroanatomical strucutures based on photos taken from real-life tissues are discussed, leading to the implementation of a bidimensional atlas, that establishes connections between neuroanatomy and the clinical practice. Secondly, a system for the efficient and accurate estimation of the time intervals associated with swallow phases was developed, supposing videofluoroscopic images as inputs. The system performs pre-processing of such images by means of file conversions, followed by image analysis, that leads to the final estimation. A clinical experiment was carried out in order to validate the platform, yielding (allowing) a preliminar proposition for a ânormal pattern of swallowâ, which is based on the average-estimated swallow times. Results pointed out that the system may be considered, flexible, requiring simple hardware/software configurations, and also providing details on fractioning.

ASSUNTO(S)

videofluoroscopia inderdisciplinary education engenharia eletrica educaÃÃo inderdisciplinar anÃlise de imagens vrml platform image analysis engenharia biomÃdica plataforma vrml videofluoroscopy deglutiÃÃo

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