DEVELOPMENT OF PARALLEL COMPUTATION SYSTEM FOR TOMOGRAPHIC RECONSTRUCTION

该子项目是利用 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得主要资金， 因此可以在其他CRISP条目中表示。列出的机构是 中心，不一定是研究者的机构。 为了从2D投影图像生成3D图，通常使用滤波反投影或滤波反向传播算法。这些算法在计算上要求很高，特别是随着图像分辨率的增加。我们研制了由16个处理器组成的计算机集群系统。高速网络允许计算机节点和远程接入终端之间的通信。结合硬件结构，提出了并行处理算法。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. To generate 3D map out of 2D projection images, either filtered back-projection or filtered back-propagation algorithm is typically used. These algorithms are computationally demanding especially as the resolution of image increases. We have developed computer clustersystem which is composed of 16 processors. High speed networks allow communications between computer nodes and remote access terminals. Together with hardware construction, parallel processing algorithm has been developed.