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






2. What is the name for a binary digit?






3. 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?






4. A low contrast image has a ___ frequency.






5. When power is turned off - (ROM / RAM) is erased and (ROM / RAM) is maintained






6. A high contrast image has a ___ frequency.






7. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.






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






9. Increased noise = _____ image contrast.






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






11. 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?






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






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






14. Which type of information consists of collected facts?






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






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






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






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






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






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






21. Because electrical currents are understood as being either on or off - the binary system consists of information recorded as either a _ for off or a _ for on.






22. What are the two most common output devices?






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






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






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






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






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






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






29. Which type of information consists of operating instructions?






30. When was ENIAC invented?






31. What is the system of conductors that connects the various components of a computer system and permits the CPU to accept inputs from any point along the conductor?






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






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






34. Noise is measured as what?






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






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






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






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






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






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






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






42. When was ENIAC invented?






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






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






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






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






47. What is an image that has been converted into numerical values for transmission or processing?






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






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






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