低侵襲心臓外科手術用リアルタイム三次元超音波Integral videography

概要

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This paper presents a real-time three-dimensional imaging system using integral videography (IV) with intra-operative data acquisition that applies three-dimensional (3D) ultrasound to create a minimally invasive cardiac surgery navigation system. We used a trans-vaginal ultrasound probe with a volume data acquisition rate of 5 volumes/s. Coordinate transformation and image enhancing is performed as 3D data preprocessing. An interpolation profile is used to improve the performance of coordinate transformation. We implemented a 3D diffusion stick filter for speckle suppression to enhance image quality. Experiments using a human hand as a phantom showed that the online IV image frame rate is around 2 frames/s. As an attempt to further increase system performance, the use of smart multi-threading for IV rendering completely resolved the problem of performance loss due to non-uniform data distribution. We are considering how to combine the quickness of ultrasound and the image quality of CT for further development.
社団法人日本生体医工学会の論文
2005-12-10