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radiographic imaging Test

Enter the letter for the matching Answer
incorrect
1.
define primary radiation.
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2.
Name the two main components of an x-ray tube
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3.
What controls quality?
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4.
define OID
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5.
define isotropic.
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6.
define leakage radiation.
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7.
a filter absorbs long or short wave radiation?
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8.
what is the function of the tube housing?
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9.
what are contained in the focusing cup during the production of x-rays?
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10.
what controls filament circuit and measures tube current?
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11.
a filter increases or decreases the amount of overall radiation to the IR?
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12.
a grid increases or decreases the amount of overall radiation to the IR?
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13.
define density.
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14.
define extrafocal radiation.
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15.
define SID
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16.
what factors affect contrast?
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17.
can x-rays be focused with a lens?
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18.
what is the difference between scatter and secondary radiation?
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19.
how many focal spots are on the target in the anode?
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20.
How do you get mAs?
A.
source to IR distance.
B.
equal all the way around.
C.
provide support for the x-ray tube. protection from leakage radiation. dissipate heat away from the tube. protection for high voltage cables.
D.
two. one large and one small.
E.
no
F.
any radiation emanating from the tube housing.
G.
decreases.
H.
decreases.
I.
kVp beam restriction (collimation, coning) fog (lengthens scale) filtration (decreases contrast) patient (more tissue increases secondary and scatter and decreases contrast) grid (increases contrast)
J.
object to IR distance.
K.
anode and cathode
L.
overall blackening of the x-ray image.
M.
mA
N.
useful beam from the window.
O.
mA x time = mAs
P.
electrons
Q.
long-wave radiation.
R.
kVp
S.
radiation that hits just outside the focal spot and still exits the window.
T.
scatter strikes an OUTER shell electron. secondary interacts with an INNER shell electron.
Type the Answer that corresponds to the displayed Question.
incorrect
21.
true of false: since x-rays are waves, the do not travel in straight lines.
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22.
the process of boiling off of electrons is called what?
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23.
scatter and secondary radiation have a lower energy level. Is it a longer or a shorter wavelength?
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24.
What two things are produced by x-ray production?
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25.
Increasing atomic number increases/decreases attenuation?
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26.
what is the source of electrons in the x-ray tube?
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27.
If the OID increases, what happens to exposure?
Type the Question that corresponds to the displayed Answer.
incorrect
28.
substance that absorbs less radiation.
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29.
mA
incorrect
30.
substance that absorbs more radiation.

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