新生児心エコー画像に基づく先天性心疾患の心血管形状モデル構築支援システム

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This paper proposes a three-dimensional cardiovascular model construction system. With the system, medical doctors can interactively construct patient-specific cardiovascular models from echocardiographic images. For the construction of cardiovascular models with diverse and complex congenital heart illness, the system proposes a set of algorithms and interface that enable editing of the shape and topology of the three-dimensional models. In order to facilitate interactivity during the construction of the cardiovascular models, centerline and radius are added to the surface of the heart vessels. This forms a skeleton where the centerlines of blood vessel serve as the nodes and edges, while the radius of the blood vessel is given as an attribute value to each node. Moreover, parent-child relationships are given to each skeleton. They are expressed as the directed acyclic graph, where the skeletons are viewed as graph nodes and the connecting points are graph edges. The results of cardiovascular model construction using real patient data confirmed that the developed technique is capable of constructing cardiovascular models in a tolerable timeframe. Thus, it is suitable for practical use. Moreover, it is successful in representing the important structures of the patient-specific heart vessels for better understanding of the congenital heart disease. Therefore, the developed system enables well representation to the congenital heart disease, which is diagnosed by medical doctors through echocardiography.
2011-09-30

新生児心エコー画像に基づく先天性心疾患の心血管形状モデル構築支援システム

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