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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. 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.






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






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






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






5. Coulombs per kilogram






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






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






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






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






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






11. Rounded prominence that appears radiopaque






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






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






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






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






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






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






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






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






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






21. Encases/supports teeth






22. Do not occur in dentistry






23. Posterior to mandibular third molar






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






25. Cortical bone; J or U shaped radiopacity






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






27. Cortical bone - radiopaque band above maxillary incisors






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






29. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






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






35. 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.






36. 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)






37. Bony wall that divides 2 spaces - radiopaque






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






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






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






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






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






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






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






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






46. 68 Degrees F






47. Superior to internal oblique ridge; anterior border of ramus ends in external oblique ridge; radiopaque band






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






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






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