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CT Review 3 Test

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1.
What is the process of conventional/serial scanning?
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2.
Which can be changed: scan FOV or display FOV?
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3.
What is interpolation process?
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4.
What is the hounsfield units of fat?
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5.
What is the process MPRs (multi planer recon) use?
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6.
What is each small region in the grid?
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7.
What are smooth filters used for?
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8.
What is the hounsfield units of Air?
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9.
What coordinates does a pixel use?
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10.
What are commonly used matrix?
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11.
What is one sample location from the pt body?
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12.
What is the hounsfield units of blood?
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13.
A pitch of .75 is a:
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14.
What is the thickness at pitch of 2?
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15.
What is the hounsfield units of water?
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16.
What are the filters used in image recon?
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17.
What is the thickness at pitch of 1?
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18.
Attenuation coefficient depends on what?
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19.
What is Cine?
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20.
What are the different scanning methods?
A.
1.scout 2.conventional/serial scan 3.helical/spiral/volumetric scan
B.
scan-stop-move
C.
projection/view
D.
1.photon energy 2.atomic # of tissue 3.thickness of tissue 4.electron density
E.
abdomen
F.
collimation is equal to slice thickness
G.
-200 to -50
H.
image-raw data-image
I.
X and Y
J.
slice thickness is 30% greater
K.
viewing in rapid sequence
L.
used to divide data into slices at any arbitrary position
M.
128x128,256x256,512x512,1024x1024
N.
-1000
O.
1.slower scan 2.more samples 3.more available mAs (more radiation)
P.
25
Q.
display FOV
R.
pixel
S.
0
T.
1.sharp 2.smooth
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21.
What is used to assign values to the pixels?
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22.
What is the hounsfield units of bone?
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23.
What are sharp filters used for?
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24.
What coordinates does a voxel use?
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25.
What is a grid of pixels called?
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26.
What is the range of the gray scale?
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27.
What is the hounsfield units of muscle?
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28.
What views do scout images use?
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29.
What is the hounsfield units of Lung
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incorrect
30.
process of applying filtration

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