Across
- 7. A very important method of protection from ionizing radiation
- 8. A region that is occupied only by occupationally exposed personnel and others under their direct supervision
- 10. A radiation worker's lifetime EfD must be limited to their age in years times 10 mSv. This limit pertains to the whole body
- 11. For primary radiation, the use factor represents the portion of beam on time that the x-ray beam is targeted or directed at a particular barrier during the week
- 14. Area such as a nearby hallway or corridor that can be frequented by the general public
- 16. A method of radiation protection that reflects the fact that the amount of radiation a worker receives is directly proportional to the length of time that the individual is exposed to ionizing radiation
- 17. A permanent secured protective barrier for imaging personnel that is located in an x-ray room that contains housing for permanent or nonportable radiographic equipment
- 18. A barrier that affords protection from secondary radiation only
Down
- 1. A protective device made of at least .25 mm lead equivalent that automatically covers the bucky slot opening in the side of the x-ray table during fluoroscopic examination when the Bucky tray is positioned at the food end of the table
- 2. A barrier designed to prevent primary, or direct, radiation from reaching personnel or members of the general public on the other side of the barrier
- 3. Expresses the relationship between distance and intensity of radiation
- 4. The ratio of air kerma behind a barrier of material thickness "x" to the value of kerma at the same location with no intervening barrier
- 5. Radiation generated in the x-ray tube that does not exit from the collimator opening but partially penetrates the protective tube housing and, to some degree, the sides of the collimator
- 6. All the deflected radiation that arises from the interaction of an x-ray beam with the atoms of a patient or any other object in the path of the beam
- 9. A factor used to modify the shielding requirement for a particular barrier by taking into account the fraction of the work week during which the space beyond the barrier is occupied
- 12. Essentially the radiation output weighted time that an x-ray machine is actually delivering radiation during the week
- 13. Radiation-absorbent barrier of appropriate thickness used to provide protection from radiation
- 15. Well confined radiation that emerges directly from the x-ray tube collimator and moves without deflection toward a wall, door, viewing window, and so on