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 __ _____ disk will store over 10000000 bytes of information.






2. 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?






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






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






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






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






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






8. What is the name for a binary digit?






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






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






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






12. Computer equipment is called what?






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






14. 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?






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






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






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






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






19. What is the name for a binary digit?






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






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






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






23. What does DICOM stand for?






24. Computers operate from ____ ____ language.






25. Noise is measured as what?






26. 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?






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






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






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






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






31. What is required for collection of input information?






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






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






34. When was ENIAC invented?






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






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






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






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






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






40. What changes the pixel value by addition or subtraction and controls image density?






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






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






43. Computer programs are called what?






44. A larger matrix provides ____ pixels.






45. What are the two ways detectors acquire information?






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






47. A high contrast image has a ___ frequency.






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






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






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