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Radiology #1
The generation of xrays requires
The housing of the xray tube is made of
Radiology #1
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Radiology
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1
The housing of the xray tube is made of
Copper
Glass
Tungsten
Lead
2
The generation of xrays requires
target
Electons
heating of cathode
all of the above
3
What is the purpose of using a fast film
Can be developed quickly
Color does not fade
longer exposure time
Shorter exposure time
4
In operating xray equipment adjustments in mA are made in order to control
Temp of cathode/amt of radiation produced
Contrast
Speed of electrons
Penetrating power of the radiation
5
MPD for a radiation worker within a calendar year is
3REM/.02
5 REM/.05
5 REM/0.05 Sv
3 REM/ 0.02
6
Which is not a pt. precaution
Radiation history
Lead apron
Proper filtration
Monitoring badge
7
If the mA is increased while the KVp and the exposure time are kept constant the film will be
lighter
darker
wrong
the same
8
The portion of the target that is struck by electrons is called
Focal Spot
Photon point
collimator
End point
9
The size of the beam measured at the pts face should be
2.75 in
3.25 in
1.5 in
2.0 in
10
What controls the speed of electrons and the penetrating force of the xray
KVP
Time
mA
film speed
11
Low energy xrays are eliminated from the xray beam because
unnecessary radiation exposure to pt.
would be absorbed by the pt. tissue
Don't contribute to the image
All of the above
12
To which of the following groups of radiation do xrays belong
Natural
Cosmic
Electromagnetic
Gamma
13
Type of radiation produced primarily in the xray tubehead is
Bremsstrahlung
Scatter
Primary
Rentgoen
14
Max molars can be distinguished from mand molars by their
toot apex
trifurcated roots
Bifurcated roots
smaller crowns
15
The amount of radiation a person receives
is not harmful
Begins new each day
cumulative only on the skin
is cumulative in the entire body
