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Digital Image Processing

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 was the earliest computer device called?






2. Which type of information consists of operating instructions?






3. A high S/N indicates ___ noise in the image.






4. What type of scanning increases resolution but can't be used in real-time dynamic studies?






5. What is the mathematical algorithm used to create all medical images?






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






7. Which type of information consists of collected facts?






8. Computer equipment is called what?






9. A high contrast image has a ___ frequency.






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






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. If window width increases - image contrast will ____.






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






14. 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?






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






16. What are devices that process information?






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






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






19. Each pixel is capable of representing a wide range of what?






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






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






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






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






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






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






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






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






28. What is required for collection of input information?






29. What does DICOM stand for?






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






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






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






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






34. What are the two most common output devices?






35. Window width and contrast have an ____ relationship.






36. What are the two most common output devices?






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






38. A larger matrix provides ____ pixels.






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






40. What does DICOM stand for?






41. When subject contrast is high - the acquired data contrast will be ____.






42. What determines resolution?






43. Window width and contrast have an ____ relationship.






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






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






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






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






48. What is critical to how fast the computer system can function?






49. What are devices that process information?






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







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