Test 3 Flashcards
mA
Amount
KvP
Penetration
Sec
Time
We would reduce radiation for?
Pregnant women and young age
Where are the two radiation badges located?
Collar and waist
Report of radiation happens?
Quarterly
Quarterly =
3 months
occupational exposure
milli-Rem
Radiation Exposure
milli-roentgen
Absorbed Exposure
milli-RAD
GSD
Genetically Significant Dose
Collimation increases what?
x-ray quality
Diagnostic x-ray procedure that leads to one of the highest occupational exposure is
fluoroscopy
Most harmful for health care workers
scatter when it comes from a patient
If you take your foot off the x-ray petal does it stop?
yes
the timer goes off every ____ minutes
five
Does the diagnostic x-ray beeps the whole time?
yes
Dose occupational limits based off deterministic or stochastic?
stochastic
Deterministic
Known threshold
Stochastic
Based off risk estimate
What do radiation burns look like when they first appear?
a rash
Do radiation burns take a long time to heal?
yes
What is the appropriate thickness of lead on a lead apron?
0.25mm
Prodromal
flu like symptoms
Biological and radiation effects
molecular, cellular, organic,
Sensitive Areas
Soft tissues, thyroid, eyes, lymphocytes, reproductive organs
Effects depend on
quality of radiation, area exposed, species sensitivity, cell sensitivity
Fetus most susceptible during ____
first trimester
Deterministic effects of radiation
biological response whose severity varies with radiation dose.
Three phases
prodromal - immediate response 1-2 days
latent period - no outward signs
manifest illness - going to die
Diagnostic x-ray beams result in partial body exposure which is less harmful then?
full body exposure
Most radiosensitive cells in the body are?
lymohocytes and spermatogonia
The earliest manifestation of radiation injury to the skin comes from damage of?
Basal cells
Stochastic effects
results of low does delivered over a long period of time
Relative risk
estimation of late radiation effects in large populations without precise knowledge of their radiation dose.
excessive risk
difference between observed and expected number of cases
Absolute risk
incidence of malignant disease observed within 1 year of given dose
Cataracts
radiation induced cataracts occur posterior pole of the lens
