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Medical Radiation Exposures in Canada: 2017.

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Canadian medical radiation use is significant, contributing 47% of the public

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Area of Science:

  • Medical Physics
  • Radiology
  • Public Health

Background:

  • Radiation-based medical technologies are crucial for patient diagnosis and treatment.
  • Understanding medical radiation use trends is vital for radiation protection and managing patient exposures.
  • Previous data collection on medical radiation in Canada had limitations, particularly regarding dose information.

Purpose of the Study:

  • To present retrospective Canadian data on medical radiation exposure for the UNSCEAR global survey.
  • To analyze the frequency of use across diagnostic radiology, nuclear medicine, and radiotherapy.
  • To estimate the per capita radiation dose from medical procedures in Canada.

Main Methods:

  • Retrospective analysis of Canadian data on devices, physicians, examinations, and procedures.
  • Utilized internationally pooled data to estimate average doses for specific examinations and treatments.
  • Calculated the total annual per capita dose from medical exposures, excluding radiotherapy.

Main Results:

  • The total annual per capita dose from medical exposures (excluding radiotherapy) was 1.56 mSv.
  • Medical radiation accounts for approximately 47% of all radiation doses received by Canadians.
  • Data gaps were identified, especially concerning high-quality dose data from Canadian sources.

Conclusions:

  • This assessment provides insights into Canadian medical radiation exposures, contributing to global patient protection efforts.
  • The findings help establish trends in medical radiation use and identify areas for improved data collection in Canada.
  • There is a clear need to enhance the collection of specific dose data for medical radiation procedures in Canada.