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. Gray






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






3. Linear prominence that appears radiopaque.






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






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






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






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






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






9. Posterior to mandibular third molar






10. Encases/supports teeth






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






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






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






14. Marked prominence that appears radiopaque.






15. Sievart






16. Cortical bone - radiopaque band above maxillary incisors






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






18. 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






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






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






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






22. 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.






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






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






25. Coronal part of alveolar bone - between teeth - cortical bone - radiopaque






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






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






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






29. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






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






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






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






37. 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)






38. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






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






43. U-shaped portion extending from ramus to ramus






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






45. Continues from ramus; radiopaque band






46. 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.






47. Cortical bone; J or U shaped radiopacity






48. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






49. Bump or nodule that appears radiopaque






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