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






2. When was ENIAC invented?






3. 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?






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






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






6. 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.






7. Computerized digital images are described in terms of what






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






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






10. What does DICOM stand for?






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






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






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






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






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






16. A low contrast image has a ___ frequency.






17. What is high-pass filtering also called?






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






19. Each box of an image matrix will display a ____ ____ which can be transformed into a visual brightness or density level.






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






21. 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.






22. A larger matrix provides ____ pixels.






23. What are devices that process information?






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






25. Which computers handle data composed of continuously varying electrical currents?






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






27. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






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






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






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






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






32. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?






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






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






35. A high contrast image has a ___ frequency.






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






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






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






39. 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?






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






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






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






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






44. Which type of information consists of operating instructions?






45. 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?






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






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






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






49. Noise is ____ related to contrast.






50. What is the name for a binary digit?