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






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






4. Do not occur in dentistry






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






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






7. 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






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






9. Bony wall that divides 2 spaces - radiopaque






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






11. 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)






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






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






14. Cortical bone - radiopaque band above maxillary incisors






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






16. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






20. Continues from ramus; radiopaque band






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






22. Encases/supports teeth






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






24. 68 Degrees F






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






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






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






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






29. Bump or nodule that appears radiopaque






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






31. Mature bone - muscle - nerve






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






33. 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)






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






35. Cortical bone; J or U shaped radiopacity






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






37. Bony prominence posterior to maxillary third molar; radiopaque






38. Gray






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






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






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






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






43. Coulombs per kilogram






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






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






46. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






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