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 are the 3 classifications of digitized image filters?






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






3. Which type of information consists of collected facts?






4. Which type of information consists of operating instructions?






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






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






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






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






9. Resolution is controlled by what?






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






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






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






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






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






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






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






17. What can memory be transferred as?






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






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






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






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






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






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






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






25. A high contrast image has a ___ frequency.






26. 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?






27. Window width and contrast have an ____ relationship.






28. What type of memory storage device is inexpensive and the data is stored serially (difficult to access)?






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






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






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






32. What does DICOM stand for?






33. What can memory be transferred as?






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






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






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






37. What is required for collection of input information?






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






39. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.






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






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






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






43. 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.






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






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






46. Noise is measured as what?






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






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






49. Noise is ____ related to contrast.






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