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






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






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






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






5. 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?






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






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






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






9. 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?






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






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






12. In what time period did microchip technology come out?






13. What determines resolution?






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






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






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






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






18. Which type of information consists of collected facts?






19. A low contrast image has a ___ frequency.






20. What does DICOM stand for?






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






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






23. What is the 'noisiest' component of a digital system?






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






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






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






27. What does a 1 in binary code stand for?






28. Commercial units scan only 262.5 lines out of 525 in each pass thus producing ____ for diagnostic imaging.






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






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






31. In what time period did microchip technology come out?






32. What are devices that process information?






33. 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?






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






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






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






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






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






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






40. What is required for collection of input information?






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






42. What is high-pass filtering also called?






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






44. 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?






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






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






47. What are the two ways detectors acquire information?






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






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






50. Noise is ____ related to contrast.