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Radiotherapy Infrastructure Shielding Calculations: software development for shielding calculations in a linear

Charalampia Ganou1, Aristotelis Ganos2, Spiridon Papatheodorou3

  • 1Department of Medical Physics, School of Medicine, University of Patras, 26504 Patras, Greece.

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Summary

A new software, Radiotherapy Infrastructure Shielding Calculations (RISC), accurately determines radiotherapy room shielding thickness for linear accelerators. This user-friendly tool simplifies complex calculations for medical physicists and students, ensuring radiation safety.

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Radiological Engineering

Background:

  • Radiotherapy rooms require precise shielding calculations to ensure safety.
  • Existing methods for calculating shielding thickness can be complex and time-consuming.
  • The development of user-friendly software is crucial for efficient and accurate radiation safety assessments.

Purpose of the Study:

  • To develop and validate a software tool for calculating radiotherapy room shielding thickness.
  • To provide a user-friendly graphical interface (GUI) for inputting geometric and dosimetric data.
  • To base calculations on established guidelines like NCRP 151 for accuracy and reliability.

Main Methods:

  • Developed the "Radiotherapy Infrastructure Shielding Calculations" (RISC) software using MATLAB.
  • Implemented a GUI for inputting parameters and calculating primary and secondary barrier thicknesses.
  • Validated the software against NCRP 151 examples and real-world shielding reports.

Main Results:

  • The RISC software accurately calculates shielding thickness for linear accelerator radiotherapy rooms.
  • It supports calculations for various photon energies (4-30 MV) and IMRT techniques.
  • The software provides shielding cost estimations and instantaneous dose rate calculations.

Conclusions:

  • RISC is a user-friendly, fast, and precise tool for radiotherapy shielding calculations.
  • It simplifies the process for medical physicists and can be used in educational settings.
  • Future updates will include features like skyshine and door shielding calculations.