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Radiology 3

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Reproductive (ova - sperm). Effects are passed on to generations. Genetic damage cannot be repaired






2. 68 Degrees F






3. Coulombs per kilogram






4. Cortical bone; J or U shaped radiopacity






5. Bony wall that divides 2 spaces - radiopaque






6. 'Cheekbone'; cortical bone; radiopaque band extending from zygomatic process.






7. Occurs very little; most photons pass through cell with little or no damage






8. Thin - curved areas of bone - radiopacities within nasal cavity and septum






9. Used to increase incoming voltage to 65 -000 to 100 -000 volts used by the high-voltage circuit.






10. Posterior to mandibular third molar






11. Depression of bone; submandibular salivary gland found here; radiolucent; below mylohyoid ridge






12. Cortical bone - radiopaque band above maxillary incisors






13. Suggest that no matter how small the amount of radiation received - some biologic damage occurs.






14. Encases/supports teeth






15. Sharp - thornlike projection that appears radiopaque.






16. Can control the current passing from the cathode to the anode.






17. Within maxillary sinus; acts as a division - radiopaque lines sometimes not visible






18. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






19. A direct function of the dose. No dose threshold; effects do not depend on the magnitude of the absorbed dose (Examples: cancer and genetic mutations)






20. Gray






21. Reduces exposed silver halide crystals into black metallic silver a makes dark/black areas on film; unexposed silver halide crystals are unaffected by developer






22. Internal ridge of mandible muscle attachment - continuous with internal oblique ridge; radiopaque line






23. X-radiation created when the primary beam interacts with a matter






24. Located above maxillary premolar/molar teeth - border is made up of cortical bone; sinus cavity is radiolucent compartment






25. Intersection of maxillary sinus and nasal cavity - radiopaque - cortical bone; above maxillary canine.






26. U-shaped portion extending from ramus to ramus






27. Surrounds root - cortical bone - radiopaque






28. Removes unexposed silver halide crystals and creates white/clear areas on film; black metallic silver remains on film.






29. Dental x-ray machines operating 70 kVp or below: minimum 1.5 mm aluminum filtration - Dental x-ray machines operating above 70 kVp: minimum of 2.5 mm. of aluminum filtration.






30. Surrounded by genial tubercle - hole in bone near mandibular midline - radiolucent






31. Rounded prominence that appears radiopaque






32. Two small openings (radiolucent) found on floor of nasal cavity->common exit is incisive foramen






33. Tube that passes through bone - contains nerve canals/blood vessels/and appears radiolucent






34. Mature bone - muscle - nerve






35. Closed - pointed cone-high production of scatter - not used any longer.






36. Coronal part of alveolar bone - between teeth - cortical bone - radiopaque






37. Mostly seen in mandibular nerve/blood supply vertical radiolucent lines






38. Extends from alveolar bone between maxillary centrals to posterior hard palate; seen as a radiolucent line






39. Rate which exposure to radiation occurs and absorption occurs (more damage occurs with high dose due to rapid delivery and does not allow for repair)






40. Darkness or blackness on film. If kVp is increased film will be darker. If decreased - film will be lighter






41. Located at the midline of anterior portion of hard palate behind maxillary central incisors; round radiolucency between roots of centrals






42. Tube that travels length of mandible - radiolucent; has cortical walls - houses inferior alveolar nerve






43. Occurs frequently due to the high concentration of water in cells.






44. Somatic effects that have a threshold; effects increase in severity with increasing absorbed dose. (Examples: Erythema - loss of hair - cataracts - and decreased fertility)






45. Used to decrease voltage from the incoming 110- or 220-line voltage to the 3 to 5 volts used by the filament circuit.






46. Bony prominence posterior to maxillary third molar; radiopaque






47. Effects seen years - decades - or generations later






48. Superior to internal oblique ridge; anterior border of ramus ends in external oblique ridge; radiopaque band






49. Continues from ramus; radiopaque band






50. Cell damage occurs through formation of 'free radicals'. Free radicals are formed when an x-ray photon ionizes water.