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 a square series of boxes that gives form to the image?






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






3. Noise is ____ related to contrast.






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






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






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






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






8. The number of shades of gray is determined by what?






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






10. What is the raw data to which a Fourier Transformation is applied to create the digital image?






11. 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?






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






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






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






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






16. When was ENIAC invented?






17. What are the two most common output devices?






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






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






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






21. Computers operate from ____ ____ language.






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






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






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






25. What was the earliest computer device called?






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






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






28. Computers operate from ____ ____ language.






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






30. What does DICOM stand for?






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






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






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






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






35. Which type of filter amplifies or deletes all but a selected range or band of frequencies and is useful in the elimination of characteristic emission peaks?






36. Fluoroscopic noise mostly comes from what?






37. Window width and contrast have an ____ relationship.






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






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






40. 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?






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






42. What is the raw data to which a Fourier Transformation is applied to create the digital image?






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






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






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






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






47. 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?






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






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






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