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 critical to how fast the computer system can function?






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






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






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






5. What does DICOM stand for?






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






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






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






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






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






11. Which type of information consists of operating instructions?






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






13. A larger matrix provides ____ pixels.






14. What is the name for a binary digit?






15. Computerized digital images are described in terms of what






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






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






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






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






20. What is the random background information that does not contribute to the image quality?






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






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






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






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






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






26. Changes in window width are sometimes called gray scale ____ or ____.






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






28. What is the name for a binary digit?






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






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






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






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






33. 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?






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






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






36. What determines resolution?






37. A low contrast image has a ___ frequency.






38. Computer programs are called what?






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






40. Because electrical currents are understood as being either on or off - the binary system consists of information recorded as either a _ for off or a _ for on.






41. Noise is ____ related to contrast.






42. What was the earliest computer device called?






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






44. A high contrast image has a ___ frequency.






45. Computer equipment is called what?






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






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






48. Fluoroscopic noise mostly comes from what?






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






50. What are devices that process information?