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






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






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






4. Which type of information consists of operating instructions?






5. 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?






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






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






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






9. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






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






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






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






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






14. Computers operate from ____ ____ language.






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






16. When was ENIAC invented?






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






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






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






20. Computerized digital images are described in terms of what






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






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






23. What can memory be transferred as?






24. Computer equipment is called what?






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






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






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






28. What is required for collection of input information?






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






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






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






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






33. What is a square series of boxes that gives form to the image?






34. What provides specific instructions for calculations and sequential steps to be followed?






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






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






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






38. Computerized digital images are described in terms of what






39. What are the two types of information computers use?






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






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






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






43. If the window level increases - density will _____.






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






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






46. What is an individual matrix box or picture element?






47. 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?






48. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.






49. Because the range of stored densities is so much wider than the visual range - any digital image is only a small part of the total data obtained - each image is a _____ on the total range of data.






50. 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.