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With regard to diagnostic reference levels (DRLs), which of the following are true? a. They are defined as the maximum dose for a particular examination b. They are adjusted according to the patient’s body habitus c. They are set at the local level by the employer d. They can be assessed in terms of screening time e. If the DRL is exceeded, this must be reported to the Healthcare Commission |
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Answer» a. False. DRLs are defined as doses for typical examinations of that type. They can be thought of as performance standards against which individual patient doses can be judged. b. False. They are set for standard-sized patients. c. True. They are set locally by performing patient dose audits. d. True. DRLs are set in terms of measurable quantities such as screening time, dose–area product and entrance surface dose. e. False. The patient dose may exceed the DRL for that examination, especially if the patient is overweight. |
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