Modern CT scanners rely on ____ to process acquired data.
Minicomputers
To assure fast scan times and immediate data processing, CT computers depend on:
Parallel processing
Large array parallel processors are responsible for:
Performing numerous tasks simultaneously
Backprojection is associated with:
Artifacts
Which of the following processes is associated with reconstructing volumetric acquired data to make the data look like individual slices?
Linear interpolation
The term "misregistration" refers to:
Incorrect image reconstruction
Which of the following terms refers to the automatic removal of artifacts that occur in anatomy of various densities?
Z-axis filtering
What does longitudinal interpolation with z-axis filtering calculate?
Interslice distance
Filtered backprojection is most closely associated with:
Artifact- free images
Interpolation is directly affected by:
Pitch
The ability of the CT scanner to calculate image data from multiple , overlapping acquisition data sets is called ____ sampling.
Interleaved; interlaced
Image reconstruction occurs only after a scan is completed. True or False?
True
What are examples of postprocessing technique?
Longitudinal interpolation
Image smoothing
Maximum intensity projection (mip)
Volume rendering
Which of the following terms is most closely associated with image reconstruction immediately following a scan?
Filtered backprojection
One advantage of reformatting is that image detail is increased. True or False?
False
Which of the following techniques requires 100% of the data set for postprocessing?
Volume rendering
Which type of postprocessing technique would most likely be used for CT virtual colonography exams?
MinIp-mini intensity project
What is the window level if the CT/Hounsfield range is 200 to 1000?
600
Which of the following postprocessing techniques is referred to as 4-D reconstruction?
vOLUME RENDERING
Virtual reality (VR) and volume rendering imaging techniques are identical. True or False?
False
Which of the following image manipulation tools is most useful for viewing 3-D images?
Swivel
Which of the following work station applications would most likely be used by cardiologists?
Ejection fraction
Calcium scoring
Xenon studies are most closely associated with:
Neurology studies
CT fluoroscopy is especially useful for:
Biopsies
When manipulating an image using the 200m tool, the resolution:
Decreases