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






2. 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?






3. 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.






4. What is high-pass filtering also called?






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






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






7. What determines resolution?






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






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






10. What does DICOM stand for?






11. What was the earliest computer device called?






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






13. Which type of information consists of operating instructions?






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






15. 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?






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






17. Noise is measured as what?






18. What are devices that process information?






19. Which type of information consists of collected facts?






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






21. Computerized digital images are described in terms of what






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






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






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






25. What changes the pixel value by multiplication or division and controls image contrast?






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






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






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






29. What is the 'heart' of every computer?






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






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






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






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






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






35. Noise is ____ related to contrast.






36. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?






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






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






39. Resolution is controlled by what?






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






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






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






43. What does DICOM stand for?






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






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






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






47. What was the earliest computer device called?






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






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






50. A low contrast image has a ___ frequency.