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






2. Effects seen years - decades - or generations later






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






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






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






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






8. Sharp - thornlike projection that appears radiopaque.






9. 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.






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






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






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






13. Bony prominence posterior to maxillary third molar; radiopaque






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






15. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






17. Rounded prominence that appears radiopaque






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






19. 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)






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






21. Cortical bone; J or U shaped radiopacity






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






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






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






25. Sievart






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






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






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






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






30. Cortical bone - radiopaque band above maxillary incisors






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






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






33. 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






34. Marked prominence that appears radiopaque.






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






36. 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






37. Gray






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






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






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






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






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






43. Continues from ramus; radiopaque band






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






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






46. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






50. Surrounds root - cortical bone - radiopaque