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 required for collection of input information?






2. Which type of information consists of operating instructions?






3. There is a ___ relationship between subject contrast and acquired data contrast.






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






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






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






7. What is required for collection of input information?






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






9. What are the two ways detectors acquire information?






10. Which type of information consists of collected facts?






11. Computer programs are called what?






12. A high contrast image has a ___ frequency.






13. 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?






14. What does DICOM stand for?






15. Increased noise = _____ image contrast.






16. Increased noise = _____ image contrast.






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






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






19. Who or What is responsible for density changes on a digital image? On a manual image






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






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






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






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






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






25. 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?






26. What was the earliest computer device called?






27. A larger matrix provides ____ pixels.






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






29. What is the raw data to which a Fourier Transformation is applied to create the digital image?






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






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






32. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?






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






34. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?






35. 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?






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






37. Computer programs are called what?






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






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






40. Which type of information consists of collected facts?






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






42. What determines resolution?






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






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






45. A low contrast image has a ___ frequency.






46. 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?






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






48. What modalities are array processors useful for?






49. 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?






50. 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.