Introduction to Risk Assessment

What are the exposure levels associated with medical procedures? As seen from the previous page, these exposures have a significant contribution to our total exposure.

How is radiation used in medicine?

Diagnostic imaging

• X-rays are used to examine teeth, bones, and internal organs.
• Fluoroscopy and angiography allow physicians to view functioning circulatory and lymphatic system and organs.
• CT scans use computers and X-rays to produce detailed body cross-sections.

Interventional Radiology

• X-rays, fluoroscopes, and CT scans guide surgical procedures.

Radiation therapy

• Radioactive drugs are given to fight certain types of cancers.
• High radiation doses are used to destroy cancer cells.

Research

• Radiation is used in procedures for assessment of body composition.
• Radioactive isotopes help measure body functions and kinetics.