Increased sensitivity for SPECT imaging can be achieved by using a
A) general-purpose collimator.
B) converging collimator.
C) high-energy collimator.
D) high-resolution collimator.
Correct Answer:
Verified
Q24: Quench gas is used in a Geiger-Mueller
Q25: When the same nonuniformity is back-projected at
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
Q30: In SPECT/CT imaging, it is best if
Q31: When referring to image quality, contrast
A)refers to
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
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