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






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






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






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






5. Fluoroscopic noise mostly comes from what?






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






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






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






9. What determines resolution?






10. Resolution is controlled by what?






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






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






13. The computer either ____ or ____ selected frequencies during the filtering process.






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






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






16. What is high-pass filtering also called?






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






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






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






20. 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?






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






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






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






24. The computer either ____ or ____ selected frequencies during the filtering process.






25. What is required for collection of input information?






26. A low contrast image has a ___ frequency.






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






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






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






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






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






32. Noise is measured as what?






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






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






35. What is the name for a binary digit?






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






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






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






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. What can memory be transferred as?






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






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






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






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






45. What are devices that process information?






46. 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.






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






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






49. What determines resolution?






50. 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.