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 does a 1 in binary code stand for?






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






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






4. What is required for collection of input information?






5. What is required for collection of input information?






6. 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?






7. Computer memory is often rated in terms of total ____ memory.






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






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






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






11. What can memory be transferred as?






12. What does DICOM stand for?






13. Which type of information consists of operating instructions?






14. What are the 3 classifications of digitized image filters?






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






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






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






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






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






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






21. Computerized digital images are described in terms of what






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






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






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






25. Electrical connections between the CPU and the other components rung along a system of series or parallel conductors called what?






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






27. When was ENIAC invented?






28. A high contrast image has a ___ frequency.






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






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






31. Extremely narrow window width requires the computer to ignore a ___ ____ of data outside the chosen range.






32. 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.






33. Window width and contrast have an ____ relationship.






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






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






36. 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?






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






38. Noise is ____ related to contrast.






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






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






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






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






43. Noise is ____ related to contrast.






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






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






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






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






48. Computers operate from ____ ____ language.






49. Increased noise = _____ image contrast.






50. 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?