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 is required for collection of input information?






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






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






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






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






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






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






8. Computers operate from ____ ____ language.






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






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






11. What is high-pass filtering also called?






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






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






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






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






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






17. Because the range of stored densities is so much wider than the visual range - any digital image is only a small part of the total data obtained - each image is a _____ on the total range of data.






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






19. What is the name for a binary digit?






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






21. A high contrast image has a ___ frequency.






22. A high contrast image has a ___ frequency.






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






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






25. Fluoroscopic noise mostly comes from what?






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






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






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






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






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






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






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






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






34. 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?






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






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






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






38. What does DICOM stand for?






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






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






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






42. 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?






43. 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.






44. Resolution is controlled by what?






45. What can memory be transferred as?






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






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






48. 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?






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






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






Can you answer 50 questions in 15 minutes?



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