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 measure of the differences between the data values referred to as?






2. What are the two ways detectors acquire information?






3. Window width and contrast have an ____ relationship.






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






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






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






7. What can memory be transferred as?






8. 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?






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






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






11. What modalities are array processors useful for?






12. What is high-pass filtering also called?






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






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






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






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






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






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






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






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






21. 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?






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






23. What type of scanning increases resolution slightly by scanning all 525 lines in order?






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






25. What type of scanning increases resolution slightly by scanning all 525 lines in order?






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






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






28. What does DICOM stand for?






29. What is an individual matrix box or picture element?






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






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






32. Noise is ____ related to contrast.






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






34. The human visual range is ___ or fewer shades of gray.






35. What are the two most common output devices?






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






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






38. What permit input/output of information to or from the CPU?






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






40. Which type of information consists of collected facts?






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






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






43. In what time period did microchip technology come out?






44. The human visual range is ___ or fewer shades of gray.






45. Resolution is controlled by what?






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






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






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






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






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