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. Computers operate from ____ ____ language.






2. Resolution is controlled by what?






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






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






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






6. What is critical to how fast the computer system can function?






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






8. The _____ the matrix size - the better the resolution.






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






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






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






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






13. What is a specialized computer that functions as a peripheral and uses CPU memory to perform mathematical operations at extremely high speed?






14. What modalities are array processors useful for?






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






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






17. 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.






18. What are the two most common output devices?






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






20. When was ENIAC invented?






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






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






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






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






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






26. Computer equipment is called what?






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






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






29. A high contrast image has a ___ frequency.






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






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






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






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






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






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






36. Which type of information consists of collected facts?






37. What can memory be transferred as?






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






39. It is important that the radiographer understand anatomy from different perspectives due to the methods of digital processing and image information? What are the 3 perspectives?






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






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






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






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






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






45. What can memory be transferred as?






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






47. Computerized digital images are described in terms of what






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






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






50. What are devices that process information?