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首页> 外文期刊>IEEE Transactions on Medical Imaging >Use of transputers in a 3-D positron emission tomograph
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Use of transputers in a 3-D positron emission tomograph

机译:晶片机在3D正电子发射断层扫描中的使用

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The use of a VME-bus-based transputer network as a parallel processing engine for positron volume imaging (PVI) is discussed. The authors find that the speedups of parallel networks depend on two major factors, the ratio of computation to communication for a task and the size of the task, and give a simple model to explore the limits on speedups. Through actual implementation it is shown that real-time PVI data acquisition can be achieved with about 20 transputer nodes, and it is estimated that three-dimensional (3-D) image reconstruction can be achieved within 10 min using 200 nodes. Larger images and a larger number of histograms can readily be accommodated using the same parallel algorithms, as the model presented places no limits on the size of the images. The versatility and scalability of transputers makes them very suitable for use in PVI tomographs in that the same transputers can be used for speeding up data acquisition, image reconstruction, and display.
机译:讨论了使用基于VME总线的晶片机网络作为用于正电子体积成像(PVI)的并行处理引擎。作者发现并行网络的加速取决于两个主要因素,即任务的计算与通信之比和任务的大小,并给出了一个简单的模型来探索加速的极限。通过实际实现,表明可以利用大约20个晶片节点实现实时PVI数据采集,并且估计可以使用200个节点在10分钟内实现三维(3-D)图像重建。使用相同的并行算法可以轻松容纳更大的图像和更大数量的直方图,因为所提供的模型对图像的大小没有限制。晶片机的多功能性和可扩展性使其非常适合用于PVI断层扫描仪,因为相同的晶片机可用于加快数据采集,图像重建和显示。

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