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CTCombine version 0.18 is now available for download from:

CTCombine is designed to allow the NRCC Monte Carlo user code DOSXYZnrc to be used to simulate the production of EPID images of patient anatomy, using multiple gantry and floor angles. To that end, CTCombine:

  • rotates selected CT data volumes;
  • converts CT numbers to densities;
  • combines the resulting voxelised volume with a model electronic portal imaging device (EPID); and
  • writes the output in a form which can easily be read and used by DOSXYZnrc.

To use CTCombine, you will need:

  • linux/unix (and the ability to use linux/unix);
  • CT data (image files in DICOM format) for the patient/phantom you wish to simulate;
  • A text file (format shown in README.txt) describing the EPID panel you wish to simulate;
  • Calibration information (a table of densities and CT number) for the CT machine that was used to obtain your CT data;
  • BEAMnrc phase space file(s) for the field(s) you wish to use to generate the images (these files should be scored well above the isocentre, preferably at the exit plane of the linear accelerator); and
  • A list of the gantry and floor angles that you wish to use to obtain your simulated EPID images of the patient/phantom.

(The ability to use DOSXYZ_SHOW as well as experience with using CTCREATE might also make things easier.)

Instructions for running CTCombine can be found in the README.txt file, distributed with the code (above).

Version 0.18 (and all previous versions) were written in 2009, by Mark Dwyer and David Warne of the High Performance Computing and Research Support unit, Queensland University of Technology.

The authors wish to make the following disclaimer:

“Feel free to copy/modify all or any portion of this as so desired. No guarantee is made as to the accuracy of this code.  Probably best not to use in a nuclear reactor.”

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