Interpolação em 3D de Imagens de Tomografia Computadorizada usando Equações Diferenciais
DOI:
https://doi.org/10.5540/tema.2008.09.03.0459Abstract
A visualização em 3D do resultado de um exame de tomografia computadorizada (TC) aumenta a qualidade do diagnóstico médico e, conseqüentemente, a eficácia do tratamento. Para obter imagens com alta qualidade é necessário que as fatias (imagem dos resultados da TC) estejam muito próximas uma das outras, aumentando o tempo de exposição do paciente aos raios-X. Motivado pelo objetivo de obter um adequado balanceamento entre o tempo de exposição do paciente aos raios-X e a qualidade da visualização, este artigo apresenta o retoque digital como uma forma de interpolação em 3D para as fatias, permitindo a visualização em 3D das estruturas do corpo humano. O retoque é realizado pelo uso de equações diferenciais não lineares e este trabalho propõe um método de interpolação para preencher as regiões vazias entre as fatias de TC. O método é capaz de reconstruir as curvaturas da estruturas internas do paciente sem utilizar fatias próximas uma das outras. Os experimentos realizados mostram a eficácia do método proposto.References
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