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






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






3. Surrounds root - cortical bone - radiopaque






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






5. Bump or nodule that appears radiopaque






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






7. Gray






8. Time between exposure to ionizing radiation and the appearance of observable clinical signs.






9. Sievart






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






11. Encases/supports teeth






12. Coulombs per kilogram






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






14. Cortical bone - radiopaque band above maxillary incisors






15. The measurement of electrical force that causes electrons to move from a negative pole to a positive one. Measured in volts (V) or kilovolts (kV)






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






17. Tubes within maxillary sinus that carry nerves - blood supply - radiolucent band with boundary of two radiopaque cortical bony lines






18. Aluminum disks between collimator and tubehead seal. Aluminum disks filter long wavelength - low energy x-rays from x-ray beam. 0.5 mm increments






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






20. The penetrating x-ray beam that is produced at the target of the anode






21. 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.






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






23. Sharper of dark and light areas and how they are separated on film. Low kVp results in high contrast (many white and black areas - very little gray). Useful when diagnosing decay. High kVp results in low contrast (many shades of grade) Useful for per






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






25. An x-ray photon that has its path altered by matter.






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






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






28. 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.






29. 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)






30. Posterior to mandibular third molar






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






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






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






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






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






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






37. Small lymphocyte - bone marrow - reproductive cells - immature bone






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






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






40. U-shaped portion extending from ramus to ramus






41. Can increase or decrease the number of electrons passing through the cathode filament






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






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






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






45. Cortical bone; J or U shaped radiopacity






46. Produced when an electron hits the nucleus of a tungsten atom or passes very close to the nucleus of a tungsten atom.






47. Sharp - thornlike projection that appears radiopaque.






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






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






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