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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. 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)






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






3. Hole in bone below mandibular premolars - blood supply to lower lip exits here; radiolucent; often misdiagnosed for periapical pathology






4. A form of secondary radiation - the result of x-rays that has been deflected from its path by an interaction with matter.






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






6. Bump or nodule that appears radiopaque






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






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






9. Continues from ramus; radiopaque band






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






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






12. 'hooklike' - posterior to maxillary tuberosity; extension of medial pterygoid plate of sphenoid bone; radiopaque






13. 68 Degrees F






14. Anterior ramus of mandible; attachment for muscle of mastication; superimposed around maxillary tuberosity.






15. Mature bone - muscle - nerve






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






17. Space between root and the lamina dura - thin - radiolucent line - healthy PDL is uniform thickness






18. Cortical bone; J or U shaped radiopacity






19. Pear shaped compartment - appears above maxillary incisors. Appears as a large radiolucent area above the maxilla.






20. Encases/supports teeth






21. Cortical bone - radiopaque band above maxillary incisors






22. 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.






23. Bump of bone - muscle attachment; lingual aspect of mandible - 'ring shaped' radiopacitiy below mandibular incisors.






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






25. A line of union between adjoining bones - found only in skull; appears as radiolucent line






26. Between canine and lateral incisor - depression is not always visible - radiolucent






27. Reproductive (ova - sperm). Effects are passed on to generations. Genetic damage cannot be repaired






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






29. Opening/hole in bone that allows the passage of blood vessels/nerves and appears radiolucent






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






31. Marked prominence that appears radiopaque.






32. The measurement of the number of electrons moving through a conductor. Measured in amperes (A) or milliamperes (mA)






33. Produced when a high-speed electron dislodges an inner-shell electron from a tungsten atom and causes ionization of that atom. Occurs only at 70 kVp and above.






34. Primary beam passes through glass window - insulating oil - tubehead seal. 0.5 to 1.0 mm of aluminum






35. Sharp - thornlike projection that appears radiopaque.






36. Surrounds root - cortical bone - radiopaque






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






38. Scooped out of depressed area of bone that appears radiolucent






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






40. 'Cortex'-> dense - outer layer; also called compact bone-appears radiopaque on film






41. More damage can occur in younger or rapidly dividing cells






42. Bony wall that divides 2 spaces - radiopaque






43. Rounded prominence that appears radiopaque






44. 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)






45. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






46. Effects seen years - decades - or generations later






47. Quantity of radiation received or total amount absorbed (more damage with tissue absorbing large quantities of radiation)






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






49. The x-ray photon is deflected from its path during its passage through matter






50. V-shaped radiopacity at intersection of floor of nasal cavity and septum