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. 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)






2. 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.






3. Bump or nodule that appears radiopaque






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






5. Sievart






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






7. Sharp - thornlike projection that appears radiopaque.






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






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






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






11. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






15. U-shaped portion extending from ramus to ramus






16. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






21. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






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






27. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






31. Cortical bone; J or U shaped radiopacity






32. Surrounds root - cortical bone - radiopaque






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






34. Encases/supports teeth






35. 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.






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






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






38. Do not occur in dentistry






39. Marked prominence that appears radiopaque.






40. 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)






41. Coulombs per kilogram






42. Continues from ramus; radiopaque band






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






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






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






46. Effects seen years - decades - or generations later






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






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






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






50. Hollow space - cavity that appears radiolucent