RADIATION SAFETY

• In diagnostic radiology, the electromagnetic spectrum
outside the visible region is used for x- ray imaging,
including mammography and computed tomography,
magnetic resonance imaging and nuclear medicine.
• Mechanical energy in the form of high – frequency
sound waves, is used in ultrasound imaging.
• In nuclear medicine imaging, the radioactive agents are
injected or ingested and it is the metabolic or
physiologic interactions of the agent that give rise to
the information in the images.