Try this Medical CT registry exam review MCQ test that we've prepared below for you. This CT registry review test is designed for technologists who need to prepare and pass the CT certification exam. You must already know that computed tomography (CT) is an imaging procedure that uses special x-ray equipment to create detailed scans of areas inside the body. Test your understanding of this concept by taking the quiz below and acing that upcoming final exam!
IV contrast material is better visualized.
Streak artifacts are reduced or eliminated.
The patient is more comfortable during scanning.
The patient receives a lower radiation dose.
High mA and short scan time.
Low kVp and high contrast, or bone algorithm.
Adjust the angle of the gantry and widen the window width.
Small focal spot and small display field.
Spatial Resolution
Quantum Mottle
Radiation Dose to the Patient
Signal-to-Noise Ration
Choroid Plexus
Pineal Gland
Caudate Nucleus
Middle cerebral Artery
Detector singal drift sensitivity
Translation motion
Spurious signals from moving signal wires
Cost
Rotation
Spiral
Helix
Pitch
Scan arc
Filtration algorithm
Incident beam collimation
Detector alignment
Decrease 50%
Decrease 25%
Increase 50%
Increase 100%
Increase the field of view.
Decreasing field of view.
Increasing section thickness.
Decreasing section thickness.
Filtered back projection
Fourier transform
Iterative filtration
3-d rendering
Window level
Window width
Pixel size
Matrix size
Reduced partial volume averaging and improved spatial resolution
Decreased scan time, and more anatomy covered
Linear attenuation coefficient.
Partial volume averaging.
Low contrast resolution.
Edge gradient averaging.
Window width
Window level
Region of interest
Dose index
Increased mAs
Wider section thickness
Increased detection efficiency
Spatial resolution
Contrast resolution
Linearity
Clarity
Daily
Monthly
Yearly
Weekly
High spatial detectibilty
Low spatial detectibilty
High contrast detectibilty
Low contrast detectibilty
Pair production
Photoelectric effect
Compton scattering
Linear attenuation
Translate-rotate
Rotate-rotate
Rotate only
Helical / spiral
The computer overcorrects for beam hardening
The beam encounters metal in the body
The body hardens the beam thus lowering the attenuation numbers in the center
The body hardens the beam thus increasing the attenuation numbers in the center
Tube arcing artifacts
Beam hardening artifacts
Partial volume artifacts
Full volume artifacts
Low contrast artifact
Edge gradient artifact
Equipment induced artifact
Signal artifact
Smooth
Sharp
Standard
Soft
Tentorium cerebelli
Falx cerebri
Pontine cistern
Pia mater
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