Practice Test ASRT CT Questions with Correct
Answers Rated A
The z-axis refers to the ______ plane.
a) coronal
b) axial
c) sagittal
d) transverse - Correct Answer axial
Generators are often times located within the gantry. These types of generators are typically:
a) full wave/three-phase.
b) medium frequency.
c) high frequency.
d) multiwave/two-phase. - Correct Answer high frequency
Modern CT scanners rely on ____ to process acquired data. - Correct Answer minicomputers
When the x, y and z planes (length, width and height) are equal, the volume data set is:
a) isotropic.
b) linear.
c) anisotropic.
d) rectangle-shaped. - Correct Answer isotropic
Which of the following factors decrease contrast resolution?
a) small FOV
b) smaller matrix size
c) smaller pixel size
d) higher mAs - Correct Answer smaller pixel size
Ct scanners x-ray tube voltages range from ____ to ___ kV
, a) 60, 100
b) 80, 120
c) 80, 140
d) 100, 160 - Correct Answer 80, 140
Which of the following conditions is an indication for a CT scan of the head without IV contrast?
a) stroke
b) aneurysm
c) metastatic disease
d) arteriovenous malformation - Correct Answer stroke
When performing a routine chest CT scan, the scanner should be zeroed with the laser light at the:
a) jugular notch
b) xiphoid tip
c) EAM
d)top of shoulders - Correct Answer top of shoulders
To view a CT image on a LCD monitor, data must undergo:
a) digital to analog conversion
b) analog to digital conversion
c) digitization
d) quantization - Correct Answer DAC
Which of the following is the MOST effective type of CT detector?
a) scintillation
b) xenon gas
c)linear array
d) photodiose - Correct Answer scintillation
If extravasation occurs, contrast can be dissipated by reducing its viscosity. This can be accomplished
by applying a:
Answers Rated A
The z-axis refers to the ______ plane.
a) coronal
b) axial
c) sagittal
d) transverse - Correct Answer axial
Generators are often times located within the gantry. These types of generators are typically:
a) full wave/three-phase.
b) medium frequency.
c) high frequency.
d) multiwave/two-phase. - Correct Answer high frequency
Modern CT scanners rely on ____ to process acquired data. - Correct Answer minicomputers
When the x, y and z planes (length, width and height) are equal, the volume data set is:
a) isotropic.
b) linear.
c) anisotropic.
d) rectangle-shaped. - Correct Answer isotropic
Which of the following factors decrease contrast resolution?
a) small FOV
b) smaller matrix size
c) smaller pixel size
d) higher mAs - Correct Answer smaller pixel size
Ct scanners x-ray tube voltages range from ____ to ___ kV
, a) 60, 100
b) 80, 120
c) 80, 140
d) 100, 160 - Correct Answer 80, 140
Which of the following conditions is an indication for a CT scan of the head without IV contrast?
a) stroke
b) aneurysm
c) metastatic disease
d) arteriovenous malformation - Correct Answer stroke
When performing a routine chest CT scan, the scanner should be zeroed with the laser light at the:
a) jugular notch
b) xiphoid tip
c) EAM
d)top of shoulders - Correct Answer top of shoulders
To view a CT image on a LCD monitor, data must undergo:
a) digital to analog conversion
b) analog to digital conversion
c) digitization
d) quantization - Correct Answer DAC
Which of the following is the MOST effective type of CT detector?
a) scintillation
b) xenon gas
c)linear array
d) photodiose - Correct Answer scintillation
If extravasation occurs, contrast can be dissipated by reducing its viscosity. This can be accomplished
by applying a:
