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 'read-only' memory that contains basic operating instructions that are almost never changing?






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






3. What is the name for a binary digit?






4. 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?






5. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.






6. What was the earliest computer device called?






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






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






9. What is high-pass filtering also called?






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






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






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






13. What are the two most common output devices?






14. What does DICOM stand for?






15. 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?






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






17. 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?






18. Computer equipment is called what?






19. What modalities are array processors useful for?






20. Computers operate from ____ ____ language.






21. Extremely narrow window width requires the computer to ignore a ___ ____ of data outside the chosen range.






22. 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?






23. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.






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






25. Noise is measured as what?






26. What is the process used in low-pass filtering that is accomplished by averaging adjacent pixels values?






27. What are the two ways detectors acquire information?






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






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






30. Window width and contrast have an ____ relationship.






31. What is required for collection of input information?






32. What modalities are array processors useful for?






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






34. A larger matrix provides ____ pixels.






35. A high contrast image has a ___ frequency.






36. Which type of information consists of collected facts?






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






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






39. Which type of information consists of operating instructions?






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






41. A low contrast image has a ___ frequency.






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






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






44. What is the equation for determining gray scale bit depth?






45. What was the earliest computer device called?






46. What is the mathematical algorithm used to create all medical images?






47. Computerized digital images are described in terms of what






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






49. What does DICOM stand for?






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