The amount of radiation energy that is deposited in a unit mass of material, such
as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in
gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed
dose (Gy) and quality factor (a function of linear energy transfer), and is called
radiation dose equivalent in sievert units (Sv)
Note publique d''information :
One sievert is the dose equivalent of radiation exposure imparted by ionizing X-RAY
(roentgen rays) or other radiation undergoing an energy loss of 1 joule per kilogram
of body tissue (l gray). One sievert is equivalent to 100 rem (roentgen equivalent
in man)
Note publique d''information :
One gray is equivalent to the radiation exposure that deposits one joule per kilogram
of animal tissue or other material, or 100 rads