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 the name of the 'modern electronic computer'?






2. DICOM imaging now includes compatibility via a database system that includes linage of the patient images with the patient's EMR. This database system is called what?






3. What modalities are array processors useful for?






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






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






6. What type of memory storage devices are required for large amounts of data?






7. What can memory be transferred as?






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






9. What is the 'read-only' memory that contains basic operating instructions that are almost never changing?






10. What is high-pass filtering also called?






11. Fluoroscopic noise mostly comes from what?






12. What is the name for a binary digit?






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






14. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






15. Medical imaging is often achieved from information that has been processed by what?






16. Window width and contrast have an ____ relationship.






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






18. What is the primary limitation with the resolution on digital images?






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






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






21. When detectors acquire their information through ____ they are receiving all the info at once.






22. Noise is ____ related to contrast.






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






24. What is the information stored as magnetic variations referred to as?






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






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






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






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






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






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






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






32. What determines resolution?






33. What type of memory storage device is inexpensive and the data is stored serially (difficult to access)?






34. In what time period did mathematical theory and solid-state electronics come out?






35. 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.






36. What type of memory storage device is inexpensive and the data is stored serially (difficult to access)?






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






38. What changes the pixel value by addition or subtraction and controls image density?






39. 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?






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






41. Fluoroscopic noise mostly comes from what?






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






43. What are the two ways detectors acquire information?






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






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






46. When detectors acquire their information by ____ they are receiving info from a specific area.






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






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






49. What is the 'random-access' memory that usually functions as temporary storage for programming and operating instructions during use and is constantly changed/?






50. Resolution is controlled by what?