EARLY EFFECTS OF RADIATION chapter 35 Flashcards
A radiation response in human within a few
days to months
It is described as deterministic
Early Effects of Radiation
Biologic response whose severity varies
with radiation dose
A dose threshold usually exists
Deterministic Radiation Response
The most devastating human response to
radiation exposure
Death
It is of only academic interest in diagnostic
radiology
Acute Radiation-Induced Lethality
April 1986
Chernobyl Incident
March 1979
Three Mile Island Incident
Radiation sickness that occurs in human
after the whole-body dose s of 1 Gy (100
rad) or more of ionizing radiation delivered
over a short time
Acute Radiation Syndrome
The immediate response of radiation
sickness
Approximate Dose: > 100 rad
Prodomal Period
The time after exposure during which there
is no sign of radiation sickness
Approximate Dose: 100-10, 000 rad
Latent Period
It is characterized by a reduction in white
cells, red cells & platelets
Approximate Dose: 200-1000 rad
Hematologic Syndrome