Chapter 5 Definitions Flashcards
1
Q
ionizing radiation
A
electromagnetic energy that causes the release of an atom’s protons, electrons, or neutrons. Ionizing radiation is potentially hazardous to human tissue
2
Q
radionuclide
A
an atom undergoing disintegration, emitting electromagnetic radiation
3
Q
tracer element
A
a substance that is introduced into the tissues to follow or trace an otherwise unidentifiable substance or event
4
Q
megahertz
A
one million cycles per second
5
Q
physiatrist
A
a physician who specializes in physical medicine and rehabilition
6
Q
muscular dystrophy
A
an inherited disease of the muecles causing progressive atrophy and weakness
7
Q
myasthenia gravis
A
a disease caused by a malfunciton of the body’s immune system, interrupting communication with motor nerves and causing weakness and fatigue
