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Pt protection Test

Enter the letter for the matching Answer
incorrect
1.
Gonad shielding
incorrect
2.
Ways to decrease patient fluoro dose
incorrect
3.
Perform these exams in PA projection when possible.
incorrect
4.
10:1 or 12:1 grid used in what type of equipment?
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5.
Reproducibility
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6.
Why use PA instead of AP chest or spine?
incorrect
7.
lead aprons during fluoro
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8.
characteristics of radiation risks
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9.
16:1 grid good for what kV range?
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10.
Inherent filtration
incorrect
11.
Source-Skin distance for all radiographic procedures (NCRP)
incorrect
12.
equipment must be properly calibrated to give predictable results. What two values need to be checked?
incorrect
13.
Mammography equipment with a molybdenum target has how much filtration?
incorrect
14.
Advantage of digital fluoro
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15.
Glass window in mammo is made of what?
incorrect
16.
Shadow shields
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17.
(NCRP) Fluoro tabletop intensity
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18.
T/F Moving grids call for less exposure than stationary grids.
incorrect
19.
8:1 grid good for what kV range?
incorrect
20.
If the minimum response time is too high, how is this fixed.
A.
no less than 12 in -12 inches in mobile radiography -15 inches in stationary radiography
B.
up to 90 kV
C.
linearity and reproducibility
D.
invisible, long-term, cumulative
E.
consistency in exposure output during repeated exposures at a particular setting, any variation in output intensity must not exceed 5%
F.
placed under patient
G.
beryllium-low atomic number (4)
H.
built in, permanent -window of glass envelope (.5 mm Al) -thin layer of oil coolant/insulation surrounding the x-ray tube -tends to increase as tube ages, tungsten deposits
I.
False. They require more exposure.
J.
.025-.03 mm molybdenum filtration
K.
general fixed equipment
L.
fewer than 10 R/min
M.
needs fixed or will have excess density -preferable to decrease ma, but may decrease kV
N.
Skull, chest, abdomen, scoliosis series, spine
O.
leaded material casts a shadow within the illuminated field that corresponds to shielded area, inially expensive but one time expense, can be used without contacting sterile fields, NOT TO BE USED IN FLUORO.
P.
lower patient dose due to x-ray beams are pulsed not continuous
Q.
100 kV or more
R.
-decrease length of exposure -use last image hold -keep pt as close to II as possible -use automatic brightness control setting with high kV, low mA -minimize "boost" and "mag" modes, low pulse rate -collimate to smallest field of view
S.
decrease dose to breast tissue to .1% of that received in AP, magnification considerations are minimal
T.
easier and more effective on males than on females
Type the Answer that corresponds to the displayed Question.
incorrect
21.
(NCRP)What type of exposure switches are used?
Type the Question that corresponds to the displayed Answer.
incorrect
22.
adjacent mA stations should be consistent 200 mA should be 2x exposure rate as 100 mA, any variation in output intensity must not exceed 10%
incorrect
23.
film/screen radiography -four times faster than calcium tungstate phosphors
incorrect
24.
most efficient, attached to tube head, first set of shutters placed close to x-ray tube port window to control amt of image degrading "off-focus" radiation leaving tube, lead shutters (two adjustable)for length and width
incorrect
25.
limited to imaging fairly thin parts (thick and dense tissues would require excessive and impractical radiation exposures)
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26.
function to remove a large percentage of scattered radiation mostly from Compton scatter, improve radiographic contrast
incorrect
27.
aperture diaphragm, cone/cylinder, collimator
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28.
gones, lens, blood-froming organs
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29.
elementary -dedicated chest, dental unit, trauma imaging equipment -flat piece of lead having a central opening with a size and shape that determines the size and shape of x-ray beam
incorrect
30.
less than 50 kV = .5 mm Al 50-70 kV = 1.5 mm Al more tha 70 kV = 2.5 mm Al

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