CDRsp - Capítulos de livros
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Percorrer CDRsp - Capítulos de livros por Domínios Científicos e Tecnológicos (FOS) "Engenharia e Tecnologia::Engenharia Médica"
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- Automatic reconstruction of dental CT images using optimizationPublication . Amorim, Paulo H. J.; Moraes, Thiago F. de; Silva, Jorge V. L. da; Pedrini, Helio; Ruben, Rui B.Computed Tomography (CT) is, in several cases, important in dental diagnosis. In fact, the panoramic reconstruction is commonly used in order to have a longitudinal view of the dental arch. Nowadays, dental CT equipments emit lower-dose radiation compared with other CT machines. Thus, dental CT became popular. However, there are some equipments that are not able to make the panoramic reconstruction of the dental arch. In this work, a new method for automatically reconstructing the dental arch based in CT images is developed and discussed. The technique uses optimization methods in order to find the best B-spline that approaches the dental arch.
- Comparative analysis of mandibular symphysis platesPublication . Dinis, Jairson C.; Kemmoku, Daniel T.; Noritomi, Pedro Y.; Silva, Jorge V. L.; Ruben, Rui B.Mandibular symphysis plates, used to heal fractures, can be made from different materials, normally titanium or CoCr alloys. In this work these two materials are tested and compared in order to study the plate's performance in fracture stabilization. This is a computational work performed with the advice of Brazilian maxoillofacial surgeons.
- Geometric and structural comparison of anatomic modelsPublication . Zeibak, R.; Freitas, D.; Almeida, H.A.; Bártolo, P.Computer Aided Design in the medical field helps translating CT and MRI data into anatomical 3D reconstructions. Accurate 3D models are valuable tools in several medical domains, thus finding accurate 3D reconstructions have profound advantages in all of the existing medical fields. The main objective of this research is to compare existing medical imaging processing softwares and evaluating their influence regarding both geometric deviations and numerical structural simulations between the 3D resulting models of both softwares.
- Optimization of a perfusion bioreactor for tissue engineeringPublication . Freitas, D.; Almeida, H.A.; Bártolo, P.Tissue engineering aims to produce artificial tissue in order to create or repair the damage tissue. It is evident that scaffolds are of extreme importance, because they will be the support of the new tissue. This new tissue is cultivated in vitro in a bioreactor in which is placed the scaffold. In order to control the cell culture process inside of a bioreactor it is essential to know the fluid flow inside and around the scaffold and the respective wall shear stress. These wall shear stress must be adequate to the tissue to be cultivated, i.e., bone, muscle, cartilage and it is known that a proper stimulus is necessary to improve the cell proliferation inside the scaffold. This study consider a novel multifunctional bioreactor with a perfusion system module and it is intended to optimize the fluid flow within the scaffold and the respective wall shear stress on the scaffold.