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Coarctation of the aorta (CoA) is one of the most common congenital cardiac anomalies that could be corrected by surgery. However, the effects of surgical anastomosis on aortic arch flow are still unknown. In this study, a unique three-dimensional way was utilized to measure the growth of anastomotic site and computational fluid dynamics (CFD) was applied to investigate the hemodynamic effects of...
With the rapid development and wide-spread availability of hand-held market-level 3D scanner, character modeling has recently gained focus in both academia and industry. Virtual shopping applications have been widely-used in e-business. We present our parameter-based human avatar generation system and ongoing work on expanding the virtual shopping to the immersive virtual reality platforms employing...
Coarctation of the Aorta (CoA) is one of the most serious congenital heart defects in newborns. Approximately 30% of cases of CoA associated with aortic arch hypoplasia (AAH). The end-to-side aortic anastomosis (ESAA) is an effective surgical procedure to be performed for correction of CoA with AAH. In this study, the approach of computational fluid dynamics (CFD) was used to investigate the hemodynamics...
This paper presents tensor-based covariance matrices for object modeling and tracking. Unlike the traditional vector-based or matrix-based object representation, this method represents an object with a third-order tensor and has better capability to capture the intrinsic structure of the image data. We flatten the tensor to obtain all of its mode-n? unfolding matrices, each one of which can be seen...
In this work, by exploiting a phantom aneurysm model, we illustrate the correlation between experimental data and computational fluid dynamics (CFD) simulation results under well controlled conditions. This is difficult to achieve with clinical patient cases where several uncertainties are present. Quantitative measures are defined for CFD validation by virtual angiography. In addition, a parametric...
DNA algorithms have solved some NP-complete problems such as Hamilton path and Chinese postman problem; however there are only some suggestions for the shortest path problem. Weight encoding is a very important and challenge aspect in DNA computing. In this paper a computing method which based on incomplete Molecule Commixed Encoding (IMCE) is proposed. In this method, the vertex of the graph is encoded...
Virtual angiography has been recently proposed as a method to indirectly validate the accuracy of computational fluid dynamic (CFD) simulations. In doing so, X-ray angiograms are created from CFD results and compared with the acquired data. In this paper, we apply the extended virtual angiography method which has been only tested on an imaged phantom to clinical data for the first time. To obtain...
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