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Absorbed dose calorimetry.

J Renaud1,2,3, H Palmans4,5, A Sarfehnia2,6

  • 1Metrology Research Centre, National Research Council Canada, Ottawa, Canada.

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|October 19, 2019
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Summary
This summary is machine-generated.

This review details advancements in absorbed dose calorimetry for clinical radiation therapy, covering various beam types and recent innovations. It highlights progress in dosimetry for photons, electrons, and hadron therapy, crucial for accurate radiation delivery.

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Area of Science:

  • Medical Physics
  • Radiation Dosimetry
  • Calorimetry

Background:

  • The last comprehensive review on absorbed dose calorimetry was over twenty years ago, with a limited scope.
  • Calorimetry has a long history in radiation measurement, with landmark research shaping current technology.
  • Recent advancements focus on diverse clinical beam modalities, small fields, and brachytherapy.

Purpose of the Study:

  • To review the development and state-of-the-art in absorbed dose calorimetry.
  • To cover common clinical beam modalities, small/nonstandard fields, and brachytherapy.
  • To summarize recent work (last 10 years) by national laboratories and research institutions.

Main Methods:

  • Categorization of calorimeters by radiation type (photons, electrons, protons, carbon ions).
  • Focus on issues, constraints, and innovations in dose measurement for each beam type.
  • Inclusion of ionization chamber beam quality conversion factors (kQ) derived from calorimetry.

Main Results:

  • Established standards for Co-60 and high-energy X-rays.
  • Prototype calorimeters for high-energy electrons and hadron therapy.
  • Summary of kQ values for various beam types.

Conclusions:

  • Absorbed dose calorimetry is advancing across diverse clinical applications.
  • Innovations address specific challenges in dosimetry for different radiation types.
  • Future research holds promise for enhanced clinical roles of calorimetry.