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Planning Efficiency Study of a Treatment Planning Based Plan Evaluation Software

P Charpentier*, M Trager , M Werner-Wasik , Y Yu , Thomas Jefferson University, Philadelphia, PA


(Sunday, 7/29/2018) 3:00 PM - 6:00 PM

Room: Exhibit Hall

Purpose: Planning Efficiency (PE) and quality are essential to a safe, effective, and productive radiation oncology department. Simultaneously comparing multiple dosimetric criteria is challenging when using a DVH. As number of structures increases, the complexity, likelihood for error, and time required for dosimetric evaluation also increase. ClearCheck is an FDA approved software by Radformation built directly into the Eclipse treatment planning system through use of ESAPI (Eclipse Scripting Application Programming Interface). ClearCheck has the ability to quickly and intuitively display dosimetric quantities from customizable templates with pass/fail criteria. ClearCheck pulls information directly from dose-volume data and RT structures; therefore, has no numerical discrepancy to manual dosimetric calculations and is less error-prone than manual calculations.

Methods: The time taken to evaluate various dose constraints (physician and/or protocol based) for 17 plans (10 H&N, 5 prostate, and 2 SBRT lung with 25-29, 11, and 14-15 constraints, respectively) was measured as an indication of PE without ClearCheck. Subsequently, ClearCheck templates with the same constraints were created for each treatment site and populated instantly by running the script.

Results: A single manual iteration of dosimetric plan evaluation for H&N, prostate, and SBRT lung cases without ClearCheck took an average of 8.1±1.3, 5.6±0.9, and 6.5±0.7 minutes, respectively. If any changes to the plan occurred after evaluation, dosimetric evaluation would be repeated iteratively, increasing planning time. In contrast, ClearCheck displays the dosimetric indices instantaneously.

Conclusion: ClearCheck enhances the Planning Efficiency of treatment planning by instantly displaying all dose constraints of interest through customizable templates. ClearCheck’s automation decreases confusion arising from numerous structures or non-intuitive dose-volume constraints and allows simultaneous cross-comparison of multiple constraints. Future studies will evaluate plan quality as a result of ClearCheck implementation as well as initial physics check concordance with TG-275 guidelines.


Dosimetry, Treatment Planning, Quality Control


TH- External beam- photons: Development (new technology and techniques)

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