Distance Is Key to Providing Protection During Fluoroscopy Because Radiation

question 12

Multiple Choice

Distance is key to providing protection during fluoroscopy because radiation exposure follows the inverse square law.(For example,the exposure at 2 meters from the source will be only one fourth as much as the exposure at 1 meter's distance.) When positioning the patient relative to the fluoroscopy image intensifier/C-arm,the patient should be placed as far away from the ___ and as close to the __as possible for optimal image quality and minimum radiation dose to the patient's body.

• A) fluoroscope;lead shield
• B) image intensifier;x-ray tube
• C) x-ray tube;image intensifier
• D) beam;radiologist

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