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. A larger matrix provides ____ pixels.






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






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






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






5. 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?






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






7. What determines resolution?






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






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






10. A high contrast image has a ___ frequency.






11. A low contrast image has a ___ frequency.






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






13. What are devices that process information?






14. What does a 1 in binary code stand for?






15. What does a 1 in binary code stand for?






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






17. 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?






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






19. A low contrast image has a ___ frequency.






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






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






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






23. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






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






25. What is the measure of the differences between the data values referred to as?






26. What was the earliest computer device called?






27. What is high-pass filtering also called?






28. What is the measure of the differences between the data values referred to as?






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






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






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






32. Computer programs are called what?






33. What was the earliest computer device called?






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






35. Computers operate from ____ ____ language.






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






37. Changes in window width are sometimes called gray scale ____ or ____.






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






39. What does DICOM stand for?






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






41. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






42. Noise is ____ related to contrast.






43. Computer equipment is called what?






44. Resolution is controlled by what?






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






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






47. What is required for collection of input information?






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






49. What are devices that process information?






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