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Practical high-density shielding materials for medical linear accelerator rooms.

R J Barish1

  • 1Division of Radiation Oncology, New York University Medical Center, NY 10016.

Health Physics
|January 1, 1990
PubMed
Summary

High-energy linear accelerators require costly room shielding. New, low-cost, high-density shielding materials using scrap steel or cast iron in cement are presented for radiation therapy facilities.

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Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Materials Science

Background:

  • High-energy linear accelerators are increasingly adopted in radiation therapy.
  • Upgrading treatment rooms for these machines incurs significant radiation protection costs.
  • Existing infrastructure requires substantial modifications to meet new shielding demands.

Purpose of the Study:

  • To introduce novel, cost-effective shielding materials for radiation therapy rooms.
  • To evaluate the feasibility of using recycled steel and cast iron in cementitious shielding.
  • To provide a practical solution for accommodating high-energy linear accelerators.

Main Methods:

  • Development of two composite shielding materials: scrap steel in cement and cast iron in cement.

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  • Utilizing standard construction techniques for material fabrication.
  • Assessment of shielding properties and cost-effectiveness.

    • Main Results:

    • Both developed materials achieved high density, crucial for effective radiation shielding.
    • The materials were produced at a low cost compared to traditional shielding methods.
    • Standard construction practices were successfully employed in their creation.

    Conclusions:

    • The proposed steel-cement and cast iron-cement composites offer an economical and effective solution for radiation shielding.
    • These materials can facilitate the transition to high-energy linear accelerators without prohibitive reconstruction expenses.
    • The study presents a viable approach for radiation protection in modern radiotherapy centers.