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Program Information

Efficacy of Small Water Tank Measurements and TPR Vs. PDD Data for TPS

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P Goyer

A Jones , P Goyer*, Geisinger Medical Center, Danville, PA


SU-I-GPD-T-465 (Sunday, July 30, 2017) 3:00 PM - 6:00 PM Room: Exhibit Hall

Purpose: Access the efficacy of using a small water tank to produce beam data to commission a linear accelerator. In addition, the measurement of TPR directly and using that data to commission the TPS will be analyzed to determine the value of collecting TPR data directly as opposed to the conventional method of converting PDD data to TPR in the TPS.

Methods: Large conventional water tank (60 gallons) will be used and compared to a small (16 gallon) tank for collecting beam data from a linear accelerator for the purpose of beam commissioning. PDD derived planning will be compared to TPR derived planning to access which method most closely matches the actual treatment.

Results: Comparison will be presented in the form of graphical and tabular results to reflect the similarities and differences in the two beam data collection techniques.

Conclusion: A conclusion will be presented to reflect the outcome of the comparison, based on the efficacy of using a small water tank as opposed to a large water tank and whether the PDD based data is as good as data using directly measured TPR for TPS commissioning

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