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. Which type of filter amplifies or deletes all but a selected range or band of frequencies and is useful in the elimination of characteristic emission peaks?






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






3. What are the two ways detectors acquire information?






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






5. Window width and contrast have an ____ relationship.






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






7. ____ circuits permit simultaneous transmission of information while ____ circuits transmit sequentially.






8. Which type of information consists of collected facts?






9. What are the two types of information computers use?






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






11. What modalities are array processors useful for?






12. Digitalization of analog information (increases / reduces) the quality and quantity of information?






13. What does DICOM stand for?






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






15. All medical imaging is achieved with which type of computers?






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






17. It is important that the radiographer understand anatomy from different perspectives due to the methods of digital processing and image information? What are the 3 perspectives?






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






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






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






21. Computer memory is often rated in terms of total ____ memory.






22. Changes in window width are sometimes called gray scale ____ or ____.






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






24. Increased noise = _____ image contrast.






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






26. It is important that the radiographer understand anatomy from different perspectives due to the methods of digital processing and image information? What are the 3 perspectives?






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






28. What is the name of the 'modern electronic computer'?






29. What is critical to how fast the computer system can function?






30. What are the 3 classifications of digitized image filters?






31. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?






32. What are the two most common output devices?






33. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?






34. Fluoroscopic noise mostly comes from what?






35. Which computers handle data composed of definite quantities of current?






36. What type of scanning increases resolution but can't be used in real-time dynamic studies?






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






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






39. Noise is ____ related to contrast.






40. What are the 3 classifications of digitized image filters?






41. What are devices that process information?






42. Commercial units scan only 262.5 lines out of 525 in each pass thus producing ____ for diagnostic imaging.






43. What changes the pixel value by multiplication or division and controls image contrast?






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






45. Noise is ____ related to contrast.






46. What is the name for a binary digit?






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






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






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






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