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






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






3. Marked prominence that appears radiopaque.






4. Surrounds root - cortical bone - radiopaque






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






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






7. 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






8. Linear prominence that appears radiopaque.






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






10. Bony wall that divides 2 spaces - radiopaque






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






12. 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)






13. Extends from alveolar bone between maxillary centrals to posterior hard palate; seen as a radiolucent line






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






15. 68 Degrees F






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






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






18. All cells except reproductive; effects are seen in person irradiated






19. Posterior to mandibular third molar






20. Do not occur in dentistry






21. Gray






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






23. Sharp - thornlike projection that appears radiopaque.






24. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






26. Encases/supports teeth






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






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






29. Bump or nodule that appears radiopaque






30. Continues from ramus; radiopaque band






31. 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)






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






33. U-shaped portion extending from ramus to ramus






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






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






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






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






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






39. 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.






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






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






43. Sievart






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






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






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






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






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






49. 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)






50. Hollow space - cavity that appears radiolucent