RADT100 Exam 3 Review With 100%
Correct Answers 2025 LATEST
UPDATED.
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Leave the first ratin
Sampling breaks an image into ________
a. squares
b. voxels
c. pixels
d. bit depth
c. pixels
As sampling rate is increased, ___________ increases
a. spatial resolution
b. contrast resolution
c. neither of these
d. both of these
a. spatial resolution
A byte consists of ________ bits
a. 2
b. 4
c. 6
d. 8
d. 8
Bit depth is a measure of ________
a. spatial resolution
b. contrast resolution
c. image detail
d. fog
b. contrast resolution
,As DQE is increased, the amount of radiation necessary to produce an image ________
a. increases
b. decreases
c. remains the same
d. is independent of DQE
b. decreases
The human eye can distinguish ________ shades of gray
a. 100
b. 30
c. 10
d. 1000
b. 30
True / False : Quantization is the same as sampling?
False
As a spatial frequency increases, spatial resolution ________
a. increases
b. decreases
c. remains the same
a. increases
As image noise decreases, contrast resolution
a. increases
b. decreases
c. remains the same
a. increases
Digital imaging allows for ________
a. pre-processing of images
b. post processing of images
c. both of these
d. none of these
b. post processing of images
If the distance from the source to the image (SID) is doubled, how is the xray intensity at the image
affected?
, a. it is increases 4 times
b. it is doubled
c. it is reduced by 1/2
d. it is reduced by 1/4
d. it is reduced by 1/4
If the intensity of a 70 kVp exposure at 20 mAs is 1.0 mGya, what would it be at 10 mAs?
a. 0.25 mGya
b. 0.5 mGya
c. 2.0 mGya
d. 4.0 mGya
b. 0.5 mGya
A low-quality beam would also have low ________
a. penetrability
b. quantity
c. mAs
d. intensity
a. penetrability
The efficiency of xray production is __________ the tube current
a. indirectly proportional to
b. directly proportional to
c. not affected by
d. strongly affected by
c. not affected by
Characteristic xrays are produced by ________
a. braking electrons
b. excitation of outer shell electrons
c. nuclear fragmentation
d. released binding energy
d. released binding energy
An outer-shell electron is ejected and the atom is ionized during _____.
a. photoelectric interactions
b. Compton interactions
c. coherent scattering
d. pair production
Correct Answers 2025 LATEST
UPDATED.
Save
Leave the first ratin
Sampling breaks an image into ________
a. squares
b. voxels
c. pixels
d. bit depth
c. pixels
As sampling rate is increased, ___________ increases
a. spatial resolution
b. contrast resolution
c. neither of these
d. both of these
a. spatial resolution
A byte consists of ________ bits
a. 2
b. 4
c. 6
d. 8
d. 8
Bit depth is a measure of ________
a. spatial resolution
b. contrast resolution
c. image detail
d. fog
b. contrast resolution
,As DQE is increased, the amount of radiation necessary to produce an image ________
a. increases
b. decreases
c. remains the same
d. is independent of DQE
b. decreases
The human eye can distinguish ________ shades of gray
a. 100
b. 30
c. 10
d. 1000
b. 30
True / False : Quantization is the same as sampling?
False
As a spatial frequency increases, spatial resolution ________
a. increases
b. decreases
c. remains the same
a. increases
As image noise decreases, contrast resolution
a. increases
b. decreases
c. remains the same
a. increases
Digital imaging allows for ________
a. pre-processing of images
b. post processing of images
c. both of these
d. none of these
b. post processing of images
If the distance from the source to the image (SID) is doubled, how is the xray intensity at the image
affected?
, a. it is increases 4 times
b. it is doubled
c. it is reduced by 1/2
d. it is reduced by 1/4
d. it is reduced by 1/4
If the intensity of a 70 kVp exposure at 20 mAs is 1.0 mGya, what would it be at 10 mAs?
a. 0.25 mGya
b. 0.5 mGya
c. 2.0 mGya
d. 4.0 mGya
b. 0.5 mGya
A low-quality beam would also have low ________
a. penetrability
b. quantity
c. mAs
d. intensity
a. penetrability
The efficiency of xray production is __________ the tube current
a. indirectly proportional to
b. directly proportional to
c. not affected by
d. strongly affected by
c. not affected by
Characteristic xrays are produced by ________
a. braking electrons
b. excitation of outer shell electrons
c. nuclear fragmentation
d. released binding energy
d. released binding energy
An outer-shell electron is ejected and the atom is ionized during _____.
a. photoelectric interactions
b. Compton interactions
c. coherent scattering
d. pair production
