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






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






3. Gray






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






5. 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






6. 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.






7. 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)






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






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






10. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






13. Cortical bone; J or U shaped radiopacity






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






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






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






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






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






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






20. 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)






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






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






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






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






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






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






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






28. 68 Degrees F






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






30. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






35. Hollow space - cavity that appears radiolucent






36. Surrounds root - cortical bone - radiopaque






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






38. Bony prominence posterior to maxillary third molar; radiopaque






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






40. U-shaped portion extending from ramus to ramus






41. 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.






42. Linear prominence that appears radiopaque.






43. Posterior to mandibular third molar






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






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






46. Sievart






47. Marked prominence that appears radiopaque.






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






49. Bony wall that divides 2 spaces - radiopaque






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