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






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






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






4. Types of grids






5. Is responsible for the number or quantity of x-rays






6. Affects both density and contrast






7. Has a negative charge






8. The focused grid is upside down - is one reason for






9. Lead equivalent for apron






10. Collimator






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






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






13. Increase developing time and temp of developing fluid






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






15. Legally - a non-pregnant woman is required to hold a HBC dog for radiographs in NYS






16. Longer wavelengths of electromagnetic radiation have more penetrating power






17. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells






18. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton






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






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






21. Between density and mAs






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






23. Hairloss or baldness






24. With this procedure - no x-ray film is involved at all






25. Within the collimator outlines just how much is collimated






26. Lead equivalent for thyroid sheild






27. The tendency of a luminescent compound to continue to give off light after x-radiation has stopped






28. Calcium tungstate - rare earth elements






29. If barium leaks into the abdomen or lungs - it can cause what






30. If perforation is suspected - what compound do we use when radiographing






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






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






33. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)






34. Gelatinous center of disk - pinches spinal cord to cause herniated disk






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






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






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






38. If there's bone in the way of an x-ray -. those parts would be






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






40. Is located in a focusing cup made of molybdenum which has a high melting point and helps to direct the electrons produced toward the cathode






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






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






43. Refers to the 'blackness' of a radiograph






44. If the x-ray tube is not 36-40 inches from the grid - this is called the






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






46. What type of bone tumors started in the location they were first found






47. Dislocations or separations






48. Grid helps reduce the amount of......






49. In which processing solution do unionized (green) AgBr crystals get removed from the film






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