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CH-9 X-Ray Emission Test

Enter the letter for the matching
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1.
Kilovoltage
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2.
mAs
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3.
High kVp = lower subject contrast
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4.
Quality (X-ray)
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5.
Half-Value Layer (HVL)
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6.
wedge filter
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7.
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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8.
Inherent Filtration
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9.
Shape distortion
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10.
Increased x-ray beam quality results in what type of x-ray beam?
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11.
Low kVp = high subject contrast
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12.
Penumbra
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13.
collimation
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14.
Primary purpose of Flitration
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15.
Gray scale of contrast
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Types of motion
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17.
• Cone filters
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18.
Increased kVp means
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19.
Kinetic Energy
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20.
What is the main controlling factor of x-ray beam quality?
A.
• voluntary - motion under the direct control of the patient • involuntary - not under the conscious control of the patient equipment motion - reciprocating grids can cause vibrations of the cassette, overhead tube suspension system can drift
B.
refers to the range of OD's from the whitest to the blackest part of the radiograph
C.
concave or convex shaped, and find application in digital fluoroscopy, where image intensifier tube and receptor are round
D.
- 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.
E.
Energy of motion
F.
Filtration that is a result of the composition of the tube and housing
G.
More penetrating x-ray beam
H.
Half-value layer
I.
The misrepresentation by unequal magnification of the actual shape of the structure being examined
J.
increased X-ray beam quality or penetrating capability, hence less patient absorption
K.
reduces scatter that degrades radiographic image
L.
used to radiograph body parts that varies considerably, such as
M.
The thickness of absorber or homogenous filter that will reduce an X-ray beam to half its original value or intensity
N.
Short scale contrast (more black
O.
although mAs affects x-ray quantity, it still influences contrast if the mAs is too high or too low, the predominant OD will fall on the shoulder or toe of the characteristic curve
P.
Long scale contrast (less difference between areas receiving varying amounts of radiation)
Q.
- 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.
R.
is the imperfect, unsharp shadow surrounding the distinctly sharp are of a shadow called the umbra
S.
To selectively remove low-energy X-rays that have no chance of getting to the film Causes the X-ray beam to have nearly the same energy or be mono-energetic
T.
kVp
Type the that corresponds to the displayed .
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21.
grids
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22.
Increasing target atomic number enhances the efficiency of x-ray production and the energy of characteristic and bremsstrahlung x-rays
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23.
short scale low kVp
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24.
removes some scatter radiation producing radiographs of shorter scale of contrast
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25.
results in shorter scale of contrast compared with non-screen
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26.
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
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27.
bilateral wedge filter) used mainly for chest radiography
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28.
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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29.
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
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30.
Also expressed in terms of half-value layer As filtration is increased, beam quality increases but quantity decreases

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