Test your basic knowledge |

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. Is the electrical current that heats the filament






2. Grid helps reduce the amount of......






3. Hairloss or baldness






4. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad






5. Refers to the 'blackness' of a radiograph






6. For bladder cystography - we use what contrast material instead of barium






7. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor






8. Is only 1/3 the size of the actual focal spot






9. White against black - like the x-ray of a plain skeleton






10. If the kVp is increased by 15% - the density is doubled






11. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced






12. When.....collide with the anode - 99% of energy is released in the form of heat - and 1% of energy is in the form of x-rays






13. When this is exposed to x-rays - it will absorb photons (quanta) and give off photons of visible light which the film is sensitive to (give off blue light)






14. Improper centering of grid is one reason for






15. A clear protective layer on radiographic film






16. DJD is also called






17. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used






18. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?






19. Old mAs x (new FFD)2 divided by (old FFD)2






20. Sheets of luminescent phorphor crystals on a cardboard or plastic base






21. Film that is more sensitive to ionizing radiation than to fluorescent light






22. Is the most common artifact in radiography






23. MAs for ANY part - when using a grid 3x= ?






24. The greater the number of electrons released






25. An abdominal radiograph should be taken at the peak of expiration






26. These screens are the most common type - they give good resolution with relatively low exposure






27. The effective focal spot is approximately 1/3 the size of the actual focal spot






28. What type of bone tumors started elsewhere and spread to the location it was found






29. Measures the power of penetrability (quality) of the x-rays produced






30. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms






31. The shorter the wavelength of the x-ray - the more powerful the x-ray is






32. Film with: high detail - minimal graininess - increased exposure






33. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc






34. Tilting of the tube or grid is one reason for






35. The 2 types of collimators are






36. A type of electromagnetic radiation which have a shorter wavelength than visible light






37. What type of film has no screens or film cassettes






38. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)






39. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine






40. Sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base






41. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly






42. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals






43. What is the term for an unknown cause






44. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation






45. Increase mAs and kVp in order to...






46. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units






47. Radiographic signs dont always agree with what






48. A living animal - with tissue densities such as fat - muscle - fluid - and air






49. What is one of the most common area of occurance for spinal problems (15% dobermans)






50. Increase what value to penetrate thick body parts