The assignment of different generations to CT scanners is based on the configuration
of the:
A. patient and gantry.
B. tube and detectors.
C. anode and cathode.
D. tube and collimators.
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B. tube and detectors.
A straight line appearing vertically on the scanogram (pilot) of a fourth-generation CT
scanner is an artifact most likely caused by:
A. edge gradient.
B. detector malfunction.
C. tube arcing.
D. beam hardening.
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B. detector malfunction.
Cupping artifacts most commonly occur in the:
A. chest.
B. abdomen.
C. pelvis.
D. brain.
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D. brain.
The process by which electrons are produced at the cathode of a CT x-ray tube is
known as:
A. rectification.
B. anode heel effect.
C. thermionic emission.
D. isotropic emission.
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C. thermionic emission.
The computerized communication system used by a PACS to transmit data is referred
to as a:
A. convolution.
B. hierarchy.
,C. network.
D. matrix.
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C. network.
Which of the following section widths would cause the greatest amount of partial
volume averaging?
A. 1 mm
B. 3 mm
C. 5 mm
D. 10 mm
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D. 10 mm
In 1979, the scientists __________ and __________ shared the Nobel Prize for their research in
computed tomography.
A. Watson and Crick
B. Olendorf and Hounsfield
C. Hounsfield and Cormack
D. Hounsfield and Ambrose
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C. Hounsfield and Cormack
, Which of the following corresponds to the longitudinal dimension of the CT image
voxel?
A. x-axis
B. y-axis
C. z-axis
D. Orthogonal axis
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C. z-axis
Soft copies of CT images are stored on which of the following media?1. Hard drives2.
Magnetic optical disk3. Laser film
A. 3 only
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only
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B. 1 and 2 only
A CT scanner capable of producing an image that is a perfect reproduction of the
actual anatomic section is said to have an MTF of:
A. 0.
B. 1.
C. 10.
D. 100.
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of the:
A. patient and gantry.
B. tube and detectors.
C. anode and cathode.
D. tube and collimators.
Give this one a try later!
B. tube and detectors.
A straight line appearing vertically on the scanogram (pilot) of a fourth-generation CT
scanner is an artifact most likely caused by:
A. edge gradient.
B. detector malfunction.
C. tube arcing.
D. beam hardening.
,Give this one a try later!
B. detector malfunction.
Cupping artifacts most commonly occur in the:
A. chest.
B. abdomen.
C. pelvis.
D. brain.
Give this one a try later!
D. brain.
The process by which electrons are produced at the cathode of a CT x-ray tube is
known as:
A. rectification.
B. anode heel effect.
C. thermionic emission.
D. isotropic emission.
Give this one a try later!
C. thermionic emission.
The computerized communication system used by a PACS to transmit data is referred
to as a:
A. convolution.
B. hierarchy.
,C. network.
D. matrix.
Give this one a try later!
C. network.
Which of the following section widths would cause the greatest amount of partial
volume averaging?
A. 1 mm
B. 3 mm
C. 5 mm
D. 10 mm
Give this one a try later!
D. 10 mm
In 1979, the scientists __________ and __________ shared the Nobel Prize for their research in
computed tomography.
A. Watson and Crick
B. Olendorf and Hounsfield
C. Hounsfield and Cormack
D. Hounsfield and Ambrose
Give this one a try later!
C. Hounsfield and Cormack
, Which of the following corresponds to the longitudinal dimension of the CT image
voxel?
A. x-axis
B. y-axis
C. z-axis
D. Orthogonal axis
Give this one a try later!
C. z-axis
Soft copies of CT images are stored on which of the following media?1. Hard drives2.
Magnetic optical disk3. Laser film
A. 3 only
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only
Give this one a try later!
B. 1 and 2 only
A CT scanner capable of producing an image that is a perfect reproduction of the
actual anatomic section is said to have an MTF of:
A. 0.
B. 1.
C. 10.
D. 100.
Give this one a try later!
