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






2. A larger matrix provides ____ pixels.






3. The quality of the data acquired from the IR is measured by what three data characteristics?






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






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






6. When was ENIAC invented?






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






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






9. Increased noise = _____ image contrast.






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






11. What can memory be transferred as?






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






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






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






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






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






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






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






19. 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?






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






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






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






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






24. Window width and contrast have an ____ relationship.






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






26. Computer equipment is called what?






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






28. Computers operate from ____ ____ language.






29. What determines resolution?






30. What is required for collection of input information?






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






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






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






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






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






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






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






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






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






40. Computerized digital images are described in terms of what






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






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






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






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






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






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






47. Scanners - mouse - keyboard - input memory disk drive - and paper printers are all forms of what?






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






49. Window width and contrast have an ____ relationship.






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