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This entire process is computationally intensive. Before this summer, it was performed in LabView using precompiled Fortran libraries and could take up to sixty hours for large data sets. Part of what I worked on this summer was rewriting the software in IDL (a program specifically designed for image analysis), which improced the processing time by a factor of three. We hope to use parallel processing to speed the reconstruction up further. Since each slice can be processed individually, a very simple parallel processing model can be used, in which multiple computers use the same program to analyze different data. To implement this, we’ll have one computer keep a list of what needs to be processed and send it out slice by slice to the other computers. As each computer finishes, it will be sent another slice.