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






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






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






4. Coulombs per kilogram






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






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






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






8. 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.






9. Between canine and lateral incisor - depression is not always visible - radiolucent






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






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






12. Sharp - thornlike projection that appears radiopaque.






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






14. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






16. Marked prominence that appears radiopaque.






17. Surrounds root - cortical bone - radiopaque






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






19. 68 Degrees F






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






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






22. Do not occur in dentistry






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






24. Hollow space - cavity that appears radiolucent






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






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






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






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






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






30. Gray






31. Cortical bone - radiopaque band above maxillary incisors






32. Linear prominence that appears radiopaque.






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






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






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






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






37. Sievart






38. 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






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






40. 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






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






42. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






45. Continues from ramus; radiopaque band






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






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






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






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






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