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






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






3. Sharp - thornlike projection that appears radiopaque.






4. 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)






5. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






8. Gray






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






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






11. 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






12. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






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






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






18. Bony wall that divides 2 spaces - radiopaque






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






20. 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)






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






22. U-shaped portion extending from ramus to ramus






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






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






25. Surrounds root - cortical bone - radiopaque






26. 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)






27. 68 Degrees F






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






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






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






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






32. Hollow space - cavity that appears radiolucent






33. Do not occur in dentistry






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






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






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. 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.






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






39. Sievart






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






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






42. Linear prominence that appears radiopaque.






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






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






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






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






47. Bump or nodule that appears radiopaque






48. Encases/supports teeth






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






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