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






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






3. What can memory be transferred as?






4. What determines resolution?






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






6. Computer programs are called what?






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






8. What are the two most common output devices?






9. Noise is ____ related to contrast.






10. Which type of information consists of operating instructions?






11. What determines resolution?






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






13. 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?






14. Computers operate from ____ ____ language.






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






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






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






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






19. Computerized digital images are described in terms of what






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






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






22. Around what time did digital computerization come out for CT and US?






23. 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.






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






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






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






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






28. Which type of information consists of collected facts?






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






30. Modalities differ in bit depth that is available depending on the capabilities of what?






31. Window width and contrast have an ____ relationship.






32. A larger matrix provides ____ pixels.






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






34. Computer equipment is called what?






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






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






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






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






39. Fluoroscopic noise mostly comes from what?






40. A larger matrix provides ____ pixels.






41. What was the earliest computer device called?






42. Computers operate from ____ ____ language.






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






44. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?






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






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






47. Resolution is controlled by what?






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






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






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