RadBio Study Guide Flashcards
Skin redness?
Erythema.
The shedding of the outer layers of skin?
Desquamation
Hair loss.
Epilation.
Who was Clarence Daily and did he do?
Thomas Edison’s assistant , he helped prove the dangers of radiation.
4 Laws of Bergonie and Tribondeau?
- Stem or immature cells are more radiosensitive than mature cells
- Younger tissues and organs and more radiosensitive than older tissues and organs
- The higher the metabolic cell activity, the more radiosensitive it is.
- The greater the proliferation and growth rate for tissue, the greater the radio sensitivity.
What is the Law of Bergonie and Tribondeau?
Concludes that compared to a child or adult a fetus is most radiosensitive.
Believed it was best to give a large dose at one time for the best results from treatment.
Gave second treatment at smaller dose over longer period of time.
Fractionation Theory.
The ability of normal tissues to replenish themselves following injury.
Repopulation.
Define as the time during which a course of radiation is given.
Protraction.
Symbol is R
It is a measure of the ionization of air.
Roentgen.
Symbol is rad
Considered the unit of absorbed dose.
Rad.
Symbol is Rem
Unit of dose equivalent or occupational exposure.
Rem.
Rad = ?
Gray
Rem = ?
Sievert
Roentgen = ?
Coulomb/Kilogram.
Makes recommendation, not laws or requirements.
NCRP.
Set an occupational exposure limit of 5 Rem per year.
ICRP.
Occupational exposure is what per year?
5 Rem.
Basic unit of a structure and function of all living things.
Cell.
Water makes up how much of a persons body weight?
80%
Cells can be?
Spherical, rectangular, or irregular.
What is radiobiology?
Branch of science concerned with the methods of interaction and the effects of ionizing radiation on living systems.
Building blocks of proteins.
Amino acids.
Function is to store energy.
Lipids.