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






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






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






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






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






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






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






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






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






10. Surrounds root - cortical bone - radiopaque






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






12. 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)






13. Gray






14. Posterior to mandibular third molar






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






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






17. U-shaped portion extending from ramus to ramus






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






19. Effects seen years - decades - or generations later






20. Hollow space - cavity that appears radiolucent






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






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






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






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






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






26. 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)






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






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






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






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






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






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






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






34. 68 Degrees F






35. 'Arranged like a lattice'->soft - spongy bone located between 2 layers of cortical bone; spaces are trabeculae that are filled with bone marrow.






36. Sievart






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






38. All cells except reproductive; effects are seen in person irradiated






39. Sharp - thornlike projection that appears radiopaque.






40. Linear prominence that appears radiopaque.






41. 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.






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






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






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






45. 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)






46. Coulombs per kilogram






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






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






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






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