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






2. Noise is ____ related to contrast.






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






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






5. What modalities are array processors useful for?






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






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






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






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






10. Which computers handle data composed of continuously varying electrical currents?






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






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






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






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. 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?






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






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






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






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






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






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






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






23. What changes the pixel value by addition or subtraction and controls image density?






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






25. What is the name for a binary digit?






26. Computerized digital images are described in terms of what






27. What determines resolution?






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






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






30. 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?






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






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






33. 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?






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






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






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






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






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






39. What is required for collection of input information?






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






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






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






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






44. 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?






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






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






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






48. What was the earliest computer device called?






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






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