Fall-Winter 06-07 Flashcards
Which would you expect to receive the highest amount of radiation from an x-ray procedure?
Skin
Which form do we encounter Radon in?
Gasq
Higher energy photons are present with what?
Higher frequency
Radiation Hormesis refers to what?
the beneficial effects from exposure to low levels of radiation
Dosimetry is used for what?
Detecting radiation
What year was x-ray discovered
1895
Which of the following in the primary factor for radiographic contrast?
kV
What are considered the standard tube distances?
40 and 72 inches
what is the purpose of rectifiers
change the current from alternating to direct
the calculations of mA x time x kVp determine what?
The Head Units
what will reduce penumbra
small focal spot
what is the usual tube warm up procedure?
two exposures with the second using 2 times the mAs
if you want to produce more x rays what would you do
increase the mA
a decrease in the anode angle would have what effect?
Smaller effective focal spot
anode heel effect refers to what?
a reduced intensity of the x-ray bean on the anode side of the tube
