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Program Information

The Automation of the Treatment Planning System Commissioning

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B Gu

B Gu1*, A Wexler2 , M Mutic3 , J Kavanaugh4 , S Goddu5 , S Mutic6 , B Cai7 , (1) Washington University School of Medicine, St. Louis, MO, (2) ,Columbia, MO, (3) Washington University in St. Louis School of Medicine, St. Louis, MO, (4) Washington University in St. Louis, St. Louis, MO, (5) Washington University, St. Louis, MO, (6) Washington University in St Louis, St Louis, MO, (7) Washington University School of Medicine, St. Louis, MO


SU-I-GPD-T-431 (Sunday, July 30, 2017) 3:00 PM - 6:00 PM Room: Exhibit Hall

Purpose: The TPS commissioning is a resource demanding, time consuming and error prone process that usually requires the completion of numerous manual procedures. We developed a computer application to standardize and automate a large portion of these manual steps to increase the robustness and efficiency of the process.

Methods: The application was developed in the Microsoft Visual Studio utilizing the Varian Eclipse Application Programming Interface (ESAPI) to connect to the Varian Eclipse TPS and to perform various commissioning tasks according to the user requirements. The functions were designed based on the published guidelines such as TG53, TG119, TG66 and MPPG5.a. The TPS basic functionality, geometric integrity, and imaging property testing can be automatically accomplished using a standard digital dataset. The program can generate various standard 3D, IMRT/VMAT plans on different benchmarking CT imaging dataset with the option to choose desired dose calculation algorithms. A set of metrics such as dose profiles, dose volume information were then automatically obtained, analyzed and the color coded pass/fail was reported. The program was deployed to three dosimetrically matched Eclipse TPS servers and the benchmarking tests were run to evaluate the stability and output consistency of the program.

Results: The dataset integrity were first checked after the virtual phantom being imported. 0% difference were reported when compared to standards for structure volume and HU values from three TPS. One 3D and one IMRT plan were generated and the dosimetric values were all within 1% among these tests.

Conclusion: An ESAPI based auto testing tool was successfully designed to execute standard TPS commissioning tests. The initial results on three Eclipse system demonstrated the feasibility and reliability to deploy the program for a standardized and quantifiable TPS validation and testing. The proposed tool also has the potential for periodic QA and to aid in the end-to-end test.

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