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A versatile program for the calculation of linear accelerator room shielding.

Zeinab El-Taher Hassan1, Nehad M Farag1, Wael M Elshemey2

  • 1National Cancer Institute, Cairo University, Cairo, Egypt, 11796.

Journal of Radiological Protection : Official Journal of the Society for Radiological Protection
|March 23, 2018
PubMed
Summary
This summary is machine-generated.

A new computer program, Shield Calculation in Radiotherapy (SCR), simplifies and accurately calculates shielding for linear accelerator rooms. It validates against established standards and includes advanced features for modern radiotherapy techniques.

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Computational Science

Background:

  • Radiotherapy facilities require precise shielding calculations to ensure radiation safety.
  • Existing methods for shielding design can be complex and time-consuming.
  • The National Council on Radiation Protection and Measurements (NCRP) Report No. 151 provides essential guidelines for shielding.

Purpose of the Study:

  • To design a user-friendly computer program for calculating radiotherapy linear accelerator room shielding.
  • To implement NCRP Report No. 151 recommendations into a practical software tool.
  • To enhance shielding calculation capabilities for advanced radiotherapy techniques like IMRT and TBI.

Main Methods:

  • Development of the Shield Calculation in Radiotherapy (SCR) program using Microsoft Visual Basic.
  • Application of NCRP Report No. 151 shielding calculation methodologies.
  • Validation through reproduction of NCRP Report No. 151 examples and manual calculations for a test design.
  • Inclusion of six distinct user interfaces for various shielding aspects.

Main Results:

  • The SCR program accurately and efficiently calculates primary and secondary barrier thicknesses.
  • It computes photon dose equivalents and skyshine radiation for photons and neutrons.
  • The program successfully validates against NCRP Report No. 151 and manual calculations.
  • New capabilities for IMRT and TBI shielding calculations were successfully integrated.

Conclusions:

  • The SCR program offers a comprehensive, simple, fast, and accurate solution for radiotherapy room shielding design.
  • It provides a valuable tool for uploading, testing, and optimizing proposed shielding designs.
  • The software enhances safety and efficiency in radiotherapy facility planning.