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 is the name for a binary digit?






2. What provides specific instructions for calculations and sequential steps to be followed?






3. What is required for collection of input information?






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






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






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






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






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






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






10. What directs information to and from various parts of the computer?






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






12. When was ENIAC invented?






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






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






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






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






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






18. What is the 'heart' of every computer?






19. Fluoroscopic noise mostly comes from what?






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






21. A high S/N indicates ___ noise in the image.






22. Computerized digital images are described in terms of what






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






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






25. What was the earliest computer device called?






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






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






28. Which type of filter amplifies or deletes all but a selected range or band of frequencies and is useful in the elimination of characteristic emission peaks?






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






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






31. A low contrast image has a ___ frequency.






32. DICOM imaging now includes compatibility via a database system that includes linage of the patient images with the patient's EMR. This database system is called what?






33. A low contrast image has a ___ frequency.






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






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






36. Window width and contrast have an ____ relationship.






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






38. What determines resolution?






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






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






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






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






43. What is required for collection of input information?






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






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






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






47. What can memory be transferred as?






48. 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?






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






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






Can you answer 50 questions in 15 minutes?



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