Test your basic knowledge |

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






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






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






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






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






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






7. 68 Degrees F






8. Cortical bone; J or U shaped radiopacity






9. U-shaped portion extending from ramus to ramus






10. Coulombs per kilogram






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






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






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






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






15. Encases/supports teeth






16. 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)






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






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






19. Surrounds root - cortical bone - radiopaque






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






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






22. Marked prominence that appears radiopaque.






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






24. Effects seen years - decades - or generations later






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






26. Rounded prominence that appears radiopaque






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






28. Linear prominence that appears radiopaque.






29. 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)






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






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






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






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






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






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






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






37. Posterior to mandibular third molar






38. Cortical bone - radiopaque band above maxillary incisors






39. Gray






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






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






42. 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






43. Continues from ramus; radiopaque band






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






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






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






47. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






48. Hollow space - cavity that appears radiolucent






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






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