safety
what are some examples of long-term somatic effects?
cancer (leukemia), cataractogenesis, life span shortening.
what is chronic radiation exposure?
radiation delivered in small increments over a long period of time.
What type of dose-response relation the thyroid follow?
linear, non-threshold (stochastic) dose response
what type of dose-response relationship does skin follow?
threshold, (non-stochastic) dose response
prenatal death, congenital abnormalities, neonatal death, increased risk of leukemia.
Genetic effects, effect the _______?
the offspring
what is the effect of 1 rad (0.01gy or 10 mGy) on lifespan?
shortens lifespan by 10 days
what type of dose-response relationship does breast tissue follow?
linear, non-threshold (stochastic) dose response
which ova are most radiosensitive?
immature ova
which trimester is the most radiosensitive?
the first trimester
which type of exposure is more harmful: Acute or chronic?
Acute
what is the most radiosensitive portion of the eye?
the lens
what happens to bone marrow with radiation exposure?
destruction and reduction of RBC's, WBC's and platelets
how does radiation affect sperm in males?
depresses sperm population
what is carcinogenesis?
cancer-causing effects of radiation
what is acute radiation exposure?
large dose delivered over a short period of time.
the condition of cataracts is the result of _______?
opacity of the lens of the eye, due to radiation exposure
what type of dose-response relationship does bone marrow follow?
linear, threshold dose response
what does can cause permanent sterility in males?
500-600 rad (5-6 Gy or 5,000-6,000 mGy)
what type of effect is carcinogenesis?
long-term somatic effect
what is the result of acute radiation exposure?
greater life span shortening.
what type of dose-response relationship does cataracts follow?
non-linear, non-threshold (stochastic) response
what are common radiation effects on the skin?
erythema, desquamation, and epilation (hair loss)
what dose can result in genetic mutations in males?
10 rad (0.1 Gy or 100 mGy
when does radiation induced cancer typically occur?
long after exposure to radiation