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 input device do radiographers use on a normal basis?






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






3. When was ENIAC invented?






4. Computerized digital images are described in terms of what






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






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






7. What is required for collection of input information?






8. 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?






9. What are the two most common output devices?






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






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






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






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






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






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






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






17. What are the two ways detectors acquire information?






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






19. What determines resolution?






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






21. What can memory be transferred as?






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






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






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






25. What are the two most common output devices?






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






27. What input device do radiographers use on a normal basis?






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






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






30. A low contrast image has a ___ frequency.






31. Noise is measured as what?






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






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






34. What are the two ways detectors acquire information?






35. Resolution is controlled by what?






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






37. Which type of information consists of operating instructions?






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






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






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






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






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






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






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






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






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






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






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






49. What are devices that process information?






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