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






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






3. 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)






4. Sievart






5. Area of body exposed total body produced more adverse effects






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






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






8. 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.






9. Sharp - thornlike projection that appears radiopaque.






10. Bony prominence posterior to maxillary third molar; radiopaque






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






12. 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)






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






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






15. 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.






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






17. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






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






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






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






24. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






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






30. Encases/supports teeth






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






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






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






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






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






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






37. Hollow space - cavity that appears radiolucent






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






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






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






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






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






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






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






45. Effects seen years - decades - or generations later






46. Bump or nodule that appears radiopaque






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






48. Coulombs per kilogram






49. Gray






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