ARRT PT 2 (Mosby big exam Questions)
and Correct Answers
Increased dose equals increased probability of effects best describes what effect? - correct
answers:Stochastic Effects
The annual effective dose limit for the general public, assuming frequent exposure, is...? - correct
answers:1.0 mSv
The use of gonadal shielding on female patients may reduce gonad dose by up to what percentage? -
correct answers:50%
The blood count is depressed following a whole body dose equivalent of at least how many rads? -
correct answers:0.25 Sv
Radiation doses up to ____ are considered relatively low risk to the embryo and fetus. - correct
answers:0.20 mSv
Background radiation is the source of approximately what percent of human exposure? - correct
answers:50%
According to NCRP Report #160, the increase in total exposure is primarily attributed to increased use of:
A) MRI
B) Diagnostic medical ultrasound
C) Fluoro & IR procedures
D) CT - correct answers:D) CT
Exposure times longer than ___ minutes can lead to skin effects. - correct answers:30
The preferred term for radiation exposure is: - correct answers:Air Kerma
, The height of a sine wave is called:
a. Wavelength
b. Altitude
c. Amplitude
d. Frequency - correct answers:C) Amplitude
In computed radiography, each pixel corresponds to a shade of gray representing an area in the patient
known as a(n): - correct answers:Voxel
Lightness and darkness of the image in CR may be adjusted by:
A) Doubling the kVp
B) Adjusting the window level
C) Adjusting the window width
D) Using digital fluoroscopy - correct answers:B) Adjusting the window level
Radiographic contrast in CR may be adjusted by changing the:
A) Window level
B) Windwo width
C) Area of the patient being irradiated
D) Imaging plate - correct answers:B) Window width
The amount of receptor exposure is controlled PRIMARILY by? - correct answers:mAs
The visible image may also be called the:
a. Manifest image
b. Image-in-waiting
and Correct Answers
Increased dose equals increased probability of effects best describes what effect? - correct
answers:Stochastic Effects
The annual effective dose limit for the general public, assuming frequent exposure, is...? - correct
answers:1.0 mSv
The use of gonadal shielding on female patients may reduce gonad dose by up to what percentage? -
correct answers:50%
The blood count is depressed following a whole body dose equivalent of at least how many rads? -
correct answers:0.25 Sv
Radiation doses up to ____ are considered relatively low risk to the embryo and fetus. - correct
answers:0.20 mSv
Background radiation is the source of approximately what percent of human exposure? - correct
answers:50%
According to NCRP Report #160, the increase in total exposure is primarily attributed to increased use of:
A) MRI
B) Diagnostic medical ultrasound
C) Fluoro & IR procedures
D) CT - correct answers:D) CT
Exposure times longer than ___ minutes can lead to skin effects. - correct answers:30
The preferred term for radiation exposure is: - correct answers:Air Kerma
, The height of a sine wave is called:
a. Wavelength
b. Altitude
c. Amplitude
d. Frequency - correct answers:C) Amplitude
In computed radiography, each pixel corresponds to a shade of gray representing an area in the patient
known as a(n): - correct answers:Voxel
Lightness and darkness of the image in CR may be adjusted by:
A) Doubling the kVp
B) Adjusting the window level
C) Adjusting the window width
D) Using digital fluoroscopy - correct answers:B) Adjusting the window level
Radiographic contrast in CR may be adjusted by changing the:
A) Window level
B) Windwo width
C) Area of the patient being irradiated
D) Imaging plate - correct answers:B) Window width
The amount of receptor exposure is controlled PRIMARILY by? - correct answers:mAs
The visible image may also be called the:
a. Manifest image
b. Image-in-waiting
