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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. Rounded prominence that appears radiopaque






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






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






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






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






6. Sharp - thornlike projection that appears radiopaque.






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






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






9. Bony wall that divides 2 spaces - radiopaque






10. Bony prominence posterior to maxillary third molar; radiopaque






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






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






13. U-shaped portion extending from ramus to ramus






14. Marked prominence that appears radiopaque.






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






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






17. Cortical bone - radiopaque band above maxillary incisors






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






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






20. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






21. Hollow space - cavity that appears radiolucent






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






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






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






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






26. Linear prominence that appears radiopaque.






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






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






29. 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.






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






31. Coulombs per kilogram






32. Continues from ramus; radiopaque band






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






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






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






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






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






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






39. Bump or nodule that appears radiopaque






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






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






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






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






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






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






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






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






50. Mature bone - muscle - nerve