The helical acquisition mode is the most common technique used for imaging which
three body sections?
-cranium
-chest
-abdomen
-extremities
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-chest
-abdomen
-extremities
What is the mathematical process that converts raw data into image data?
-reconstruction
-reformation
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, reconstruction
Which of the following technical adjustments may be employed to improve the
temporal resolution of an MDCT system?
1. Decreased scan time
2. Decreased section width
3. Decreased DFOV
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1 only
Third generation CT scanners use which of the following scan geometries?
-translate-rotate
-rotate-stationary
-transaxial
-rotate-rotate
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rotate-rotate
The geometric efficiency of a CT detector is influenced primarily by the:
-atomic number of the detector material
-size of the detector element
-size of the tube filament
-amount of interspace material between detectors
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, amount of interspace material between detectors
Which of the following components of CT image quality is/are being evaluated?
1. Linearity
2. Section width
3. Spatial resolution
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1 and 2
The technical factors necessary for the acquisition of an isotropic data set is/are:
1. thin detector collimation
2. high mA setting
3. small DFOV
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1 and 3
Which of the following is the primary interaction between x-ray photons and tissue
during computed tomography?
-Bremsstrahlung
-Characteristic
, -Compton effect
-Coherent scatter
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compton effect
During volumetric CT acquisition, the slice sensitivity profile (SSP) graphically
represents the:
-effective section width
-dose profile
-beam width
-detector collimation
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effective section width
The Feldkamp-Davis-Kress (FDK) algorithm may be applied to multidetector CT
(MDCT) acquisition data to overcome image artifacts from:
-patient motion
-beam hardening
-partial volume averaging
-beam divergence
Give this one a try later!
beam divergence
three body sections?
-cranium
-chest
-abdomen
-extremities
Give this one a try later!
-chest
-abdomen
-extremities
What is the mathematical process that converts raw data into image data?
-reconstruction
-reformation
Give this one a try later!
, reconstruction
Which of the following technical adjustments may be employed to improve the
temporal resolution of an MDCT system?
1. Decreased scan time
2. Decreased section width
3. Decreased DFOV
Give this one a try later!
1 only
Third generation CT scanners use which of the following scan geometries?
-translate-rotate
-rotate-stationary
-transaxial
-rotate-rotate
Give this one a try later!
rotate-rotate
The geometric efficiency of a CT detector is influenced primarily by the:
-atomic number of the detector material
-size of the detector element
-size of the tube filament
-amount of interspace material between detectors
Give this one a try later!
, amount of interspace material between detectors
Which of the following components of CT image quality is/are being evaluated?
1. Linearity
2. Section width
3. Spatial resolution
Give this one a try later!
1 and 2
The technical factors necessary for the acquisition of an isotropic data set is/are:
1. thin detector collimation
2. high mA setting
3. small DFOV
Give this one a try later!
1 and 3
Which of the following is the primary interaction between x-ray photons and tissue
during computed tomography?
-Bremsstrahlung
-Characteristic
, -Compton effect
-Coherent scatter
Give this one a try later!
compton effect
During volumetric CT acquisition, the slice sensitivity profile (SSP) graphically
represents the:
-effective section width
-dose profile
-beam width
-detector collimation
Give this one a try later!
effective section width
The Feldkamp-Davis-Kress (FDK) algorithm may be applied to multidetector CT
(MDCT) acquisition data to overcome image artifacts from:
-patient motion
-beam hardening
-partial volume averaging
-beam divergence
Give this one a try later!
beam divergence
