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radiographic imaging Test

Enter the letter for the matching Answer
incorrect
1.
define density.
incorrect
2.
how many filaments are found in the cathode?
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3.
what factors affect contrast?
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4.
what is the source of electrons in the x-ray tube?
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5.
what alters x-ray beam wavelength?
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6.
what are contained in the focusing cup during the production of x-rays?
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7.
what is the function of the tube housing?
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8.
What controls quantity?
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9.
x-rays are perfectly safe, true or false?
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10.
What two things are produced by x-ray production?
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11.
how many focal spots are on the target in the anode?
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12.
define leakage radiation.
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13.
a grid increases or decreases the amount of overall radiation to the IR?
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14.
define extrafocal radiation.
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15.
define radiopaque.
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16.
define OID
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17.
How do you get mAs?
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18.
scatter and secondary radiation have a lower energy level. Is it a longer or a shorter wavelength?
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19.
what two components make up the cathode?
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20.
what is the difference between scatter and secondary radiation?
A.
substance that absorbs more radiation.
B.
provide support for the x-ray tube. protection from leakage radiation. dissipate heat away from the tube. protection for high voltage cables.
C.
filament and focusing cup
D.
radiation that hits just outside the focal spot and still exits the window.
E.
longer.
F.
mA x time = mAs
G.
decreases.
H.
heat and x-rays
I.
mA
J.
any radiation emanating from the tube housing.
K.
object to IR distance.
L.
false, they have a biologic effect.
M.
kVp beam restriction (collimation, coning) fog (lengthens scale) filtration (decreases contrast) patient (more tissue increases secondary and scatter and decreases contrast) grid (increases contrast)
N.
electrons
O.
two. one large and one small.
P.
two. one small and one large
Q.
cathode
R.
overall blackening of the x-ray image.
S.
scatter strikes an OUTER shell electron. secondary interacts with an INNER shell electron.
T.
kVp
Type the Answer that corresponds to the displayed Question.
incorrect
21.
Name the two main components of an x-ray tube
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22.
a filter increases or decreases the amount of overall radiation to the IR?
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23.
a filter absorbs long or short wave radiation?
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24.
the process of boiling off of electrons is called what?
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25.
Increasing atomic number increases/decreases attenuation?
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26.
true of false: since x-rays are waves, the do not travel in straight lines.
Type the Question that corresponds to the displayed Answer.
incorrect
27.
useful beam from the window.
incorrect
28.
source to IR distance.
incorrect
29.
kVp
incorrect
30.
substance that absorbs less radiation.

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