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According to the NCRP the monthly gestational dose-equivalent limit for embryo/fetus of a pregnant radiographer is
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Which of the following is/are used to account for the differences in tissue characteristics when determining effective dose to biologic material? tissue weighting factors, radiation weighting factors, absorbed does
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radiation protection
arrt review
| Question | Answer |
|---|---|
| According to the NCRP the monthly gestational dose-equivalent limit for embryo/fetus of a pregnant radiographer is | 5mSv |
| Which of the following is/are used to account for the differences in tissue characteristics when determining effective dose to biologic material? tissue weighting factors, radiation weighting factors, absorbed does | tissue weighting factors |
| What is the annual occupational whole-body dose equivalent limit regulated by the NCRP? | 50mSv |
| what are sources of secondary radiation? background, leakage, scatter | leakage and scatter |
| How does filtration affect the primary beam? | increases the average energy |
| What is the minimum lead requirement for lead aprons by the NCRP? | 0.50 mm of lead |
| OSL dosimeter contains what detector? | Aluminum Oxide |
| What is the unit for radiation to biologic material? | rem or Sv |
| hair loss is termed | epliation |
| NCRP regulation says leakage radiation from the x-ray tube shouldn't exceed more than | 100mR/h |
| When atomic mass of the same element are different it is called | isotope |
| diagnostic x rays are described as | low energy, low LET |
| promary radiation barriers are required to be how thick? | 1/16 in lead |
| What dose response curve is represented by a direct relationship and starts at 0,0? | linear, nonthreshold |
| What is the equation to determine x ray intensity? | I(1)/I(2)=D(2)^2/D(1)^2 |
| Aluminum filtration has its greatest effect on | low-energy x ray photons |
| Occupational exposure unit of measure is | rem or Sv |
| The SSD in mobile fluoroscopy must be | 15 in max |
| The automatic exposure device that is located immediately under the x ray table is the | photomultiplier |
| What kind of dose-reponse curve represent possible genetic effects | linear, nonthreshold |
| What personnel monitoring device is the most sensitive and accurate? | OSL dosimeter |
| List the 3 classifications of ARS | central nervous system, gastrointestinal, and hematologic |
| In the production of characteristic radiation at the tungsten target, the incident electron | ejects an inner-shell electron |
| What is the most radiosensitive part of the GI tract? | small bowel |
| What is the unit of measurement for exposure in the air? | Roentgen (C/kg) |
Created by:
ljkivett
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