When referring to image quality, contrast
A) refers to how well objects can be separated in space.
B) determines whether two objects have different activity concentrations.
C) refers to the ability to see the edge of a structure.
D) occurs because of the random nature of counting statistics.
Correct Answer:
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Q26: If a detector can produce an electronic
Q27: Body contouring or elliptical orbits in SPECT
Q28: Compared to a low-energy collimator, a high-energy
Q29: Increased sensitivity for SPECT imaging can be
Q30: In SPECT/CT imaging, it is best if
Q32: The center-of-rotation measurement
A)determines the number of projections.
B)corresponds
Q33: Ramp-filtered projections are characterized by
A)a star artifact.
B)edge
Q34: In multihole low-energy collimators, longer and smaller
Q35: Digitization of the signal of each photomultiplier
Q36: When referring to image quality, resolution
A)refers to
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