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| MLC Calibration Technique - US Patents 6675116, 6934653, International Patents Pending |
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Use this RIT patented technique to calibrate to dose in just 2 films! RIT113 supplies an MLC file to generate a step wedge in dose. This step wedge has 13 dose steps on a single film. This dose step film combined with an unexposed film (for zero) dose is all you need for a complete calibration curve. You can also generate your own MLC step wedge file with more than 13 steps. Alternatively, you can use your primary collimators to direct the beam to a narrow band, then step your couch to achieve the same steps of dose. For even more accurate dose conversion, multiple MLC step calibration films (at different dose levels) may be combined using the Calibration Merge Utility into one super calibration film. For those using compensators, .decimal¨ now makes a compensator step wedge for our patented calibration routine that may be purchased from RIT. In addition, this can be used with the Automated 21 point Film Processor Correction routine to reduce the number of calibrations needed.
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