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. Computers operate from ____ ____ language.






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






3. What does DICOM stand for?






4. Computer programs are called what?






5. Increased noise = _____ image contrast.






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






7. A high contrast image has a ___ frequency.






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






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






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






11. Computers operate from ____ ____ language.






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






13. What are the two ways detectors acquire information?






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






15. When power is turned off - (ROM / RAM) is erased and (ROM / RAM) is maintained






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






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






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






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






20. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






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






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






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






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






27. Noise is ____ related to contrast.






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






29. What permit input/output of information to or from the CPU?






30. What is required for collection of input information?






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






32. What is the frequency response of the incoming signal called?






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






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






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






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






37. 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?






38. Which memory replaces new information with the old; can change?






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






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






41. 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?






42. Resolution is controlled by what?






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






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






45. Window width and contrast have an ____ relationship.






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






47. What modalities are array processors useful for?






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






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






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