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Pt protection Quiz

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1. PBL requirements by NCRP




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2. How often should intensifying screens be cleaned and checked? (NCRP)




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3. If the minimum response time is too high, how is this fixed.




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4. T/F Moving grids call for less exposure than stationary grids.




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5. Source-Skin distance for all radiographic procedures (NCRP)




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6. T/F For the x-ray light field and x-ray field to correspond accurately, the x-ray tube focal spot and the light bulb must be exactly the same distance from teh center of the mirror.




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7. NCRP




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8. Whose gonads to shield




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9. equipment must be properly calibrated to give predictable results. What two values need to be checked?




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10. Perform these exams in PA projection when possible.




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11. stationary radiologic equipment, constant potential waveform, reduced patient dose




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12. film/screen radiography -four times faster than calcium tungstate phosphors




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13. Good communication and quality assurance programs




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14. small light bulb to illuminate the field and a 45-degree angle mirror to deflect the light.




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15. controls quantity, no affect on quality




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16. -when diagnostic objectives permit -when pt is of reasonable reproductive age -when gonads lie in or within 5 cm of the collimated field




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17. -decrease length of exposure -use last image hold -keep pt as close to II as possible -use automatic brightness control setting with high kV, low mA -minimize "boost" and "mag" modes, low pulse rate -collimate to smallest field of view




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18. general fixed equipment




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19. easier and more effective on males than on females




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20. have a fixed opening size, only one field size at a given distance





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