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Digital Image Processing

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 permit input/output of information to or from the CPU?






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






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






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






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






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






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






8. Increased noise = _____ image contrast.






9. Which type of information consists of operating instructions?






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






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






12. Computer programs are called what?






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






14. What is the raw data to which a Fourier Transformation is applied to create the digital image?






15. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?






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






17. 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?






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






19. Resolution is controlled by what?






20. 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?






21. Computer programs are called what?






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






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






24. What does DICOM stand for?






25. When was ENIAC invented?






26. Fluoroscopic noise mostly comes from what?






27. When was ENIAC invented?






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






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






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






31. What can memory be transferred as?






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






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






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. Because the range of stored densities is so much wider than the visual range - any digital image is only a small part of the total data obtained - each image is a _____ on the total range of data.






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






38. What is required for collection of input information?






39. 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?






40. Which type of information consists of operating instructions?






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






42. Noise is measured as what?






43. 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?






44. A high contrast image has a ___ frequency.






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






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






47. Computer equipment is called what?






48. A high contrast image has a ___ frequency.






49. What is required for collection of input information?






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







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