The shutters of a collimator
A) regulate field size.
B) reduce penumbra.
C) reduce stem radiation.
D) all of the above
Correct Answer:
Verified
Q27: Penumbra is _ when the beam restrictor
Q28: All of the following are considered beam-restricting
Q29: When more photons are absorbed photoelectrically, the
Q30: The diameter of the lower rim of
Q31: A diaphragm is placed 4 inches from
Q33: The _ the atomic number of the
Q34: As the volume of irradiated tissue _,
Q35: When collimating down from a 14"x17" field
Q36: Collimators that offer positive beam limitation (PBL)
Q37: The _ the atomic number of the
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