Test your basic knowledge |

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






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






3. Increased noise = _____ image contrast.






4. Fluoroscopic noise mostly comes from what?






5. 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?






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






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






8. What are the two most common output devices?






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






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






11. Which type of information consists of collected facts?






12. When detectors acquire their information by ____ they are receiving info from a specific area.






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






14. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.






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






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






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






18. What changes the pixel value by addition or subtraction and controls image density?






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






20. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.






21. Computer programs are called what?






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






23. A larger matrix provides ____ pixels.






24. When detectors acquire their information through ____ they are receiving all the info at once.






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






26. What determines resolution?






27. Around what time did digital computerization come out for CT and US?






28. What is required for collection of input information?






29. What is the random background information that does not contribute to the image quality?






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






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






32. What changes the pixel value by addition or subtraction and controls image density?






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






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






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






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






37. Resolution is controlled by what?






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






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






40. What is the name for an 8-bit word?






41. Window width and contrast have an ____ relationship.






42. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.






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






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






45. What was the earliest computer device called?






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






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






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






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






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







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