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






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






3. 68 Degrees F






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






5. Marked prominence that appears radiopaque.






6. 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






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






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






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






10. Sharp - thornlike projection that appears radiopaque.






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






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






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






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






15. Surrounds root - cortical bone - radiopaque






16. Cortical bone; J or U shaped radiopacity






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






18. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






22. Coulombs per kilogram






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






24. Restricts size and shape of beam to lower patient exposure - Round: cone shaped beam-2.75 inches in diameter - Rectangular: Rectangular beam slightly larger than size 2 film- lowers patient exposure






25. Encases/supports teeth






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






27. Continues from ramus; radiopaque band






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






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






30. Rounded prominence that appears radiopaque






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






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






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






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






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






36. Do not occur in dentistry






37. Cortical bone - radiopaque band above maxillary incisors






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






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






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






41. Can control the current passing from the cathode to the anode.






42. 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)






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






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






45. Posterior to mandibular third molar






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






47. Effects seen years - decades - or generations later






48. U-shaped portion extending from ramus to ramus






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






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