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






2. The electrical current sent through the filament to cause this electron release is called






3. A layer of intensifying screen that reflects the light from the phosphor layer toward the film






4. Is determined by the ratio of the height of the lead strips to the distance between them






5. Grid helps reduce the amount of......






6. Positive contrast agents appear what color on a radiograph






7. Is on the anode and is angled at approximately 20 degrees from vertical






8. Is the source of electrons






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






10. Incorrect grid focus is one reason for






11. What is the term for the spotty appearance on the film due to the large crystals in the screens






12. Ideally is very small






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






14. A lightproof encasement designed to hold x-ray film and intensifying screens in close contact






15. Size film we use here






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






17. Negative contrast agents appear what color on a radiograph






18. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?






19. The x-ray machine we've been using has a rotating anode






20. Calcium 'bridges' between adjacent vertebrae






21. Amount of radiation a person can recieve in a calendar year






22. Is the most common artifact in radiography






23. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing






24. Pigments tend to decrease the lateral spread of light so there is increased detail






25. Is to the left - electrons bounce off it at a 20 degree angle






26. MAs for abdomen (standard mAs) x=?






27. What type of film has the x-rays directly cause the latent image to be formed






28. Lung tissue appears black (radiolucent) on a radiograph






29. KVp=(2x thickness of body part in cm) + 40

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30. Is the electrical current that heats the filament






31. The 2 types of collimators are






32. MAs for bone views (pelvis - skull - spine) 2x =?






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






34. Areas on film that should be black but come out grey - due to storage






35. Calcium tungstate - rare earth elements






36. X-ray machines come with a set one - we cannot adjust it






37. Types of grids






38. Weakness






39. Rotating anode






40. 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






41. Means more electrons will be released from the filament and directed at the anode






42. The layer of the film where the action occurs






43. Screen speed is.....to the exposure required to cause it to flouresce






44. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements






45. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)






46. Is to the right - it produces the electrons






47. Between density and mAs






48. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate






49. What is the difference between fluoroscopy and a regular radiograph






50. General purpose film - forgiving