Test your basic knowledge |

Digital Image Processing

Subject : engineering
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. What is a specialized computer that functions as a peripheral and uses CPU memory to perform mathematical operations at extremely high speed?






2. A high S/N indicates ___ noise in the image.






3. What 3 things were required prior to digital computer applications in medical imaging?






4. What is the random background information that does not contribute to the image quality?






5. Binary systems operate with a ___-symbol language.






6. The computer either ____ or ____ selected frequencies during the filtering process.






7. Who or What is responsible for density changes on a digital image? On a manual image






8. What is a square series of boxes that gives form to the image?






9. What are the two ways detectors acquire information?






10. What directs information to and from various parts of the computer?






11. Noise is measured as what?






12. What is the name for a binary digit?






13. Around what time did digital computerization come out for CT and US?






14. Each pixel is capable of representing a wide range of what?






15. What provides specific instructions for calculations and sequential steps to be followed?






16. What does a 1 in binary code stand for?






17. Scanners - mouse - keyboard - input memory disk drive - and paper printers are all forms of what?






18. What is the frequency response of the incoming signal called?






19. What does a 1 in binary code stand for?






20. What is the 'heart' of every computer?






21. Each pixel is capable of representing a wide range of what?






22. What is the 'noisiest' component of a digital system?






23. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






24. The quality of the data acquired from the IR is measured by what three data characteristics?






25. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?






26. When subject contrast is high - the acquired data contrast will be ____.






27. What is the measure of the differences between the data values referred to as?






28. The number of shades of gray is determined by what?






29. A __ _____ disk will store over 10000000 bytes of information.






30. Digital detectors are capable of producing ______ shades of gray.






31. Window width and contrast have an ____ relationship.






32. Which computers handle data composed of continuously varying electrical currents?






33. What is the digital standard for imaging that is designed to ensure that all equipment fro all manufacturers who choose to adhere to the standard are speaking the same computer language?






34. What determines resolution?






35. What is an image that has been converted into numerical values for transmission or processing?






36. If the window level increases - density will _____.






37. The _____ the matrix size - the better the resolution.






38. Which memory can only be extracted without alteration; cannot change?






39. The quality of the data acquired from the IR is measured by what three data characteristics?






40. There is a ___ relationship between subject contrast and acquired data contrast.






41. The ____ is the heart of the computer while the ___ is the vessels.






42. Because the range of stored densities is so much wider than the visual range - any digital image is only a small part of the total data obtained - each image is a _____ on the total range of data.






43. Which memory replaces new information with the old; can change?






44. If window width increases - image contrast will ____.






45. Electrical connections between the CPU and the other components rung along a system of series or parallel conductors called what?






46. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






47. Which memory can only be extracted without alteration; cannot change?






48. What is the name for an 8-bit word?






49. What does a 0 in binary code stand for?






50. What are the two ways detectors acquire information?






?:?:)

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