REVIEW BASIC
MACHINE
OPERATOR
CLASS DR HILDA
BARBA State
Test(219
Questions with
100% correct
answers)
Axial calcaneus centering point
,base of 3rd metatarsal; 40 DEGREE ANGLE
through malleolus level
prime factors of exposure in radiography
Milliamperage, exposure time, kilovoltage,
and distance (SID)
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The unit used to indicate the total quantity of
x-rays in an exposure
. mAs
,If an image were made using 500 mA, 0.1
seconds, and 75 kVp, what would the mAs be
for this exposure?
B. 50 mAs
What prime factor is related to density
kvp and mAs
when increase the Kvp
decrease the contrast
when decrese the kvp
increase the contrast
increased radiographic density
Increased mA
Increased exposure time
Increased kVp
If the radiographic image is overexposed,
which of the following changes in exposure
factors should be used to correct the problem
Decrease mAs
the distance between the target and the IR IS
SID
SOURCE IMAGE DISTANCE
high contrast is produce by
low kilovoltage , by lowering the KVP
, when you increase the contrast ,and increase
the latitude
you need to lower the Kvp
when you decrease the contrast , and
decrease the latitude
you need to increase the Kvp
exposure time controls
the duration of the exposure
exposure time
controls the quantity of X ray produce
The distance between the tube target and
the IR is termed
SID source image distance
The relationship between SID and beam
intensity is expressed in
inverse square law.
Inverse square law
the intensity is inversily propotional to the
square of the distance
when increase the distance
decrease the intensity
when decrease the distance
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