Soures Of Medical Radiation Exposure Flashcards
Types of ionizing radiation
High energy electromagnetic waves
Particles
Sources of medical radiation exposure
Diagnostic
Therapeutic
Generally low and justified by the benefits of possible disease conditions
Diagnostic source
No direct evidence of radiation ever causing any harm at the exposure encountered
Diagnostic source
Involves higher exposure and physicians will consider the risk o the treatment against potential benefits
Therapeutic source
Much higher doses are given, with the intent of destroying cancer tissues
Doses in Radiation Therapy
A conservative approach between exposure and risk
Linear no-threshold relationship
Factors affecting the risk of harm from radiation
Size of the dose Rate at which it was delivered Type of radiation Part of the body exposed Age and health of the exposed individual
Emitted by radioactive elements and by equipment such as x-ray and radiation therapy machines
Ionizing radiation