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.
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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 does a 1 in binary code stand for?






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






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






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






5. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?






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






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






8. What modalities are array processors useful for?






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






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






11. What does DICOM stand for?






12. What is high-pass filtering also called?






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






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






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






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






17. Which type of information consists of collected facts?






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






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






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






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






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






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






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






25. 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?






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






27. Commercial units scan only 262.5 lines out of 525 in each pass thus producing ____ for diagnostic imaging.






28. Each box of an image matrix will display a ____ ____ which can be transformed into a visual brightness or density level.






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






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






31. Computers operate from ____ ____ language.






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






33. Increased noise = _____ image contrast.






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






35. What was the earliest computer device called?






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






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






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






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






40. Which type of information consists of operating instructions?






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






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






43. When was ENIAC invented?






44. What determines resolution?






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






46. Computer equipment is called what?






47. What are devices that process information?






48. Fluoroscopic noise mostly comes from what?






49. 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.






50. What is the 'noisiest' component of a digital system?






Can you answer 50 questions in 15 minutes?



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