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Total skin high-dose-rate electron therapy dosimetry using TG-51
Michael S Gossman1, Subhash C Sharma
1Department of Radiation Oncology, Erlanger Medical Center, Chattanooga, TN 37403, USA. GossmaMS@erlanger.org
Summary
This study presents a dosimetry method for total skin electron therapy (TSET) using the TG-51 protocol. It simplifies calibration with water and plastic phantoms for accurate absorbed dose determination.
Area of Science:
- Medical Physics
- Radiation Oncology
Background:
- Accurate dosimetry is crucial for effective total skin electron therapy (TSET).
- Existing calibration protocols require adaptation for TSET applications.
Purpose of the Study:
- To establish a simplified dosimetry approach for TSET using the TG-51 protocol.
- To integrate water and plastic phantom data for efficient calibration.
- To support the use of high-dose-rate modes on modern linear accelerators.
Main Methods:
- Utilized the TG-51 high-energy calibration protocol.
- Employed water phantom data for absolute dose calibration.
- Used plastic phantom data for reference dosimetry.
- Incorporated high-dose-rate mode conversion.
- Applied a 6-field, modified Stanford technique.
Main Results:
- A simplified dosimetry scheme for TSET was developed.
- The method allows for accurate absorbed dose determination.
- The approach is compatible with current high-energy calibration standards.
Conclusions:
- The proposed dosimetry method provides an efficient and accurate approach for TSET.
- This methodology supports the increasing availability of high-dose-rate modes in linear accelerators.
- The simplified scheme facilitates precise absorbed dose calculation in TSET.