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Regarding collimation: a. It allows the operator to adjust the filtration of the X-ray beam b. It employs a light beam diaphragm c. The collimators are constructed of material that is highly attenuating to X-rays d. It reduces scatter e. It does not affect the effective dose to the patient |
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Answer» a. False. It allows adjustment of the beam size. It has no effect on filtration. b. True. This is a light source that projects as though it originated from the X-ray focus, allowing the operator to see the position of the beam projected onto the patient. c. True. d. True. Less tissue is irradiated by directing the X-ray beam onto a smaller target area. e. False. It decreases the volume of tissue irradiated and the radiation dose. |
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