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RADON 104 Radiation Therapy Physics I • 3 Cr.


Explores principles of physics as applied to radiation therapy. Topics include forces of nature, atomic structure, radioactive decay, and specific activity and beam intensity calculations. Prerequisite: Acceptance into program.


After completing this class, students should be able to:

  • Describe the fundamental forces of nature and their applications to radiation physics.
  • Describe the components of an atom.
  • Analyze the atom in terms of a nucleus, electrons and space and their application to the production of x-rays.
  • Distinguish the relative masses of atomic particles.
  • Describe the processes of radioactive decay.
  • Write a decay equation for Alpha decay, Beta decay and Electron Capture.
  • Use a scientific calculator to solve equations involving Natural Logarithms.
  • Interpret graphs involving Natural Logarithms.
  • Calculate the reduction in activity of a radioisotope over time.
  • Analyze the effect of half-life on dose-fractionation and time.
  • Calculate the reduction in the intensity of a photon beam as it passes through an absorber.
  • Analyze the effect of the linear attenuation coefficient on shielding block design.



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Contact info

Bellevue College
3000 Landerholm Circle SE Bellevue, WA 98007-6484 U.S.A.
Work: (425) 564-1000