Calibrating the plaque

Now that all of the measurement data has been entered in the calibration dialog it is time to optimize the patch source parameters.

  • You can drag the calibration dialog to display as much of the profile plot as you care to see.

  • Click the Optimize all button. The optimization process will begin.

 PlaqueWindowCCD

  • The optimization process could take a few minutes depending on the speed of your processor.

  • Progress messages will be displayed and the central axis dose profile plotted in the profile document window.

 OptimizationProgress


When the optimization is complete you may optionally fine tune the parameters if you wish from the Calibrate Mannually tab. When the RMS% error of the central axis profile (displayed just above the Optimize all button) is a few percent or less it is time to save the plaque file.

Enter data | Measurements | Create plaque | Guide Contents
Copyright Dept. of Radiation Oncology, University of Southern California, Los Angeles, CA, 1999.