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 can memory be transferred as?






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






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






4. Which type of information consists of collected facts?






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






6. Electrical connections between the CPU and the other components rung along a system of series or parallel conductors called what?






7. Which type of filter amplifies or deletes all but the high frequencies - appears to increase contrast - and is useful in vascular imaging or digital mammo.






8. What is required for collection of input information?






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






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






11. When was ENIAC invented?






12. Noise is ____ related to contrast.






13. Computer equipment is called what?






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






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






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






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






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






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






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






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






22. 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?






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






24. What is the information stored as magnetic variations referred to as?






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






26. 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.






27. What are the two most common output devices?






28. ____ circuits permit simultaneous transmission of information while ____ circuits transmit sequentially.






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






30. What is an individual matrix box or picture element?






31. Which type of information consists of operating instructions?






32. What are devices that process information?






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






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






35. What are the two types of information computers use?






36. What are the two ways detectors acquire information?






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






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






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






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






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






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






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






44. 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?






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






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






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






48. What are the two ways detectors acquire information?






49. What does DICOM stand for?






50. What determines resolution?