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CH-9 X-Ray Emission Test

Enter the letter for the matching
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1.
Penumbra
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2.
low contrast
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3.
wedge filter
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4.
Kinetic Energy
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5.
Increased kVp means
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6.
Quality (X-ray)
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7.
Radiographic Detail
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8.
Advantages of a FilterResults in X-ray beam with
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9.
Increased kVp
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10.
Intensifying screens
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11.
kVp
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12.
Bow-tie-shaped filters
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13.
Gray scale of contrast
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14.
grids
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15.
What term refers to the thickness of the absorber needed to cut the original intensity of an x-ray beam to half its original value or intensity?
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16.
foreshortening
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17.
What term refers to the removal of low-energy x-rays from the useful beam?
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18.
Collimation
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19.
Half-Value Layer (HVL)
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20.
Kilovoltage
A.
means higher energy X-rays Shorter wavelengths and higher frequency
B.
reduces scatter
C.
refers to the range of OD's from the whitest to the blackest part of the radiograph
D.
The thickness of absorber or homogenous filter that will reduce an X-ray beam to half its original value or intensity
E.
increased X-ray beam quality or penetrating capability, hence less patient absorption
F.
used to radiograph body parts that varies considerably, such as
G.
Controlling factor of contrast Change of approximately 4% in kVp is required to usually affect the scale of contrast in the 50 to 90 kVp range
H.
Filtration
I.
long scale high kVp
J.
- The penetrability or penetrating power of an X-ray beam - X-rays with high penetrability are termed high-quality or hard X-rays, and those with low penetrability are of low quality and are called soft X-rays.
K.
removes some scatter radiation producing radiographs of shorter scale of contrast
L.
- As kVp is increased, so is X-ray beam quality as well as the half-value layer. - Increased X-ray beam quality results in a more penetrating X-ray beam -kVp is the primary control of x-ray beam quality and therefore beam penetrability.
M.
Results in X-ray beam with higher energy Greater penetrability Higher beam quality Increased in half-value layer
N.
the anatomical part appears smaller than normal due to poor alignment of the anatomical part • changes in the tube angle cause elongation but never foreshortening
O.
used in some CT scanners to compensate for the shaped of the head or body
P.
results in shorter scale of contrast compared with non-screen
Q.
the sharpness of appearance of small structures the sharpness of image detail refers to the structural lines or borders of tissues in the image and the amount of blur
R.
is the imperfect, unsharp shadow surrounding the distinctly sharp are of a shadow called the umbra
S.
Energy of motion
T.
Half-value layer
Type the that corresponds to the displayed .
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21.
What is used to selectively remove low-energy x-rays from the x-ray beam?
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22.
concave or convex shaped, and find application in digital fluoroscopy, where image intensifier tube and receptor are round
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23.
the anatomical part appears bigger than normal. Due to poor alignment of the IR or the x-ray tube
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24.
• filters are used to compensate for differences in subject radiopacity used to even out widely differing tissue densities
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25.
bilateral wedge filter) used mainly for chest radiography
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26.
Flat sheet of metal, usually lead with a hole cut in the center and attached to the x-ray tube port.
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27.
reduces scatter that degrades radiographic image
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28.
short scale low kVp
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Increasing target atomic number enhances the efficiency of x-ray production and the energy of characteristic and bremsstrahlung x-rays
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30.
Placed between the protective tube housing and the external housing or collimator\ Has two sources that totals 2 and 3mm sheets of aluminum equivalent

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