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. Resolution is controlled by what?






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






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






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






5. What is high-pass filtering also called?






6. Medical imaging is often achieved from information that has been processed by what?






7. A low contrast image has a ___ frequency.






8. Computer equipment is called what?






9. Computerized digital images are described in terms of what






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






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






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






13. 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?






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






15. 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?






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






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






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






19. Which computers handle data composed of definite quantities of current?






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






21. What are the two ways detectors acquire information?






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






23. The number of shades of gray is determined by what?






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






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






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






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






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






29. What are the two most common output devices?






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






31. What are devices that process information?






32. Noise is measured as what?






33. What does DICOM stand for?






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






35. Computers operate from ____ ____ language.






36. Which computers handle data composed of definite quantities of current?






37. What modalities are array processors useful for?






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






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






40. What was the earliest computer device called?






41. What modalities are array processors useful for?






42. 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.






43. What are the two ways detectors acquire information?






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






45. When was ENIAC invented?






46. Which type of information consists of operating instructions?






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






48. What does DICOM stand for?






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






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