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Objective
To investigate the application value of combined intravenous contrast‐enhanced ultrasound (IV‐CEUS) with intrabiliary contrast‐enhanced ultrasound (IB‐CEUS) in the preoperative evaluation of hilar cholangiocarcinoma (HCCA) resectability.
Methods
Clinical data from 82 patients with HCCA confirmed by surgery and pathology were retrospectively analyzed. Preoperative IV‐CEUS + IB‐CEUS and...
In order to overlay multiscale 2D electronic map in the 3D virtual geographic environment, this study presents and implements symbolic method in 3D API for the different types of feature, studies visualization of vector data based on the sphere, and discuss a number of issues need to be resolved. It proposes the way of multiscale expression based on multiscale topographic map and achieves fast expression...
Knowledge map is considered as one of powerful tools for the knowledge management. In this paper, we elucidate the relevant concepts, and propose the definition and characteristics of enterprise knowledge map based on geospace. By synthesizing the existing knowledge acquisition and representation techniques, it suggests the constructive process. Enterprise knowledge and Geospace knowledge are used...
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