dental radiology

3. What is the overall lightness or darkness of a radiograph called?
6. The use of intensifying screens in extraoral radiographs allows for decreased
7. What should lead aprons be inspected for annually?
9. What happens if a film is placed in the fixer before the developer?
13. What controls the size/shape of the central x-ray beam?\
14. If duplicating film were overexposed/exposed to light it would...
16. What is the minimum distance to place a 7 watt safelight?
18. How many impulses are in an exposure time of 1/6 sec.?
19. What is the dark (black/grey) areas on radiographs described as?

1. The Standard International Unit used to measure radiation exposure of an occupational worker is?
2. Direct digital imagining systems use an x-ray _______ instead of film.
4. How would it effect a film if it were left in the fixer overnight?
5. When radiation strikes (irradiates) matter/patient it is called...
8. What setting on the control panel do you increase for more penetrating power for an x-ray?
10. If manually processing x-ray films at 68 degrees requires 5 mins in the developer, how long should films be in fixer?
11. Where would you store film after removing from the mouth and transporting to darkroom?
12. When taking an xray on an edentulous patient, the exposure time should be...
15. Radiation emitted from the x-ray tube that strike the patient is...
17. How do you protect the operator from scattered radiation?
20. X-rays are stopped by...