Test your basic knowledge |

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






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






3. Computer programs are called what?






4. What is high-pass filtering also called?






5. The human visual range is ___ or fewer shades of gray.






6. Which type of information consists of operating instructions?






7. What is high-pass filtering also called?






8. Computerized digital images are described in terms of what






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






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






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






12. Computer equipment is called 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. What is the random background information that does not contribute to the image quality?






15. Binary systems operate with a ___-symbol language.






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






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






18. A low contrast image has a ___ frequency.






19. Window width and contrast have an ____ relationship.






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






21. Noise is ____ related to contrast.






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






23. What is the 'noisiest' component of a digital system?






24. When detectors acquire their information through ____ they are receiving all the info at once.






25. Computer programs are called what?






26. What does DICOM stand for?






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






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






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






30. 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?






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






32. What modalities are array processors useful for?






33. A larger matrix provides ____ pixels.






34. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.






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






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






37. What can memory be transferred as?






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






39. What are devices that process information?






40. What was the earliest computer device called?






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






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






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






44. 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?






45. What are the two most common output devices?






46. Which type of information consists of collected facts?






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






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






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






50. What are the two ways detectors acquire information?






Can you answer 50 questions in 15 minutes?



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