USE OF TRANSPUTERS IN A 3-D POSITRON EMISSION TOMOGRAPH

被引:18
作者
ATKINS, MS
MURRAY, D
HARROP, R
机构
[1] School of Computing Science, Simon Fraser University, Bumaby
关键词
D O I
10.1109/42.97576
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
The use of a VME-based transputer network as a parallel processing engine for positron volume imaging is discussed. We 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 we give a simple model to explore the limits to speedups. Through actual implementation we show that real-time PVI data acquisition can be achieved with about 20 transputer nodes, and we estimate that 3-D image reconstruction can be achieved within 10 min using 200 nodes. Larger images and a larger number of histograms can readily be accomodated using the same parallel algorithms as our model places no limits to 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.
引用
收藏
页码:276 / 283
页数:8
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