Effect of radiation on tissues and organs
Tissues and organs basically collections of cells
Individual cells reflect the degree of damage done
Cells that make up the different tissues and organs of the
body differ in their response to radiation
(1)
Intestines
(2)
Blood-forming organs
Results of radiation damage to organs
(1)
Increase or decrease in organ's products
(2)
Alteration in organ's growth
(3)
Death of the tissue or organ
Radiation exposure
a.
Type of radiation a factor in biological effects (dose for
dose, radiation of high specific ionization produces greater
biological effects than radiation of low specific ionization)
Type of dose as factor in biological effects
(1)
Acute dose (generally, single exposure to twenty-five
roentgens or more)
(2)
Chronic dose (absorption of relatively small amounts
of radiation daily over a long period of time)
(3)
Body's response to irradiation depends on the fraction
of the whole body volume exposed
(a)
Whole body irradiation
(0)
Localized irradiation