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






2. What can memory be transferred as?






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






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






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






6. Modalities differ in bit depth that is available depending on the capabilities of what?






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






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






9. What can memory be transferred as?






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






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






12. Computers operate from ____ ____ language.






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






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






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






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






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






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






19. When was ENIAC invented?






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






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






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






23. Computers operate from ____ ____ language.






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






25. What are devices that process information?






26. 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?






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






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






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






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






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






32. Increased noise = _____ image contrast.






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






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






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






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






37. A high contrast image has a ___ frequency.






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






39. What is high-pass filtering also called?






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






41. What modalities are array processors useful for?






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






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






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






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






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






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






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






49. Fluoroscopic noise mostly comes from what?






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