Schematic of the study design. The steps involved in the TPS and 3dvh process as well as the measurement and data analysis are shown. The same steps were followed for the 20 × 20 cm reference field test as the 15 patient cases.
Description of cases.
Comparison of measured ion chamber dose to the mean dose calculated by eclipse or 3dvh and the p-value for statistical significance of the difference.
Comparison of the gamma and dose difference tolerance failure rate for EDR2 film vs eclipse or 3dvh. Dose threshold of 20% used in all cases. P-value is in parenthesis for last two rows and is referred (ref) to the values in the first row.
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