Digital Image Manipulation

10 Questions

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Image Quizzes & Trivia

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Questions and Answers
  • 1. 
    A graphical display of pixel values densities of an image?
    • A. 

      Histogram

    • B. 

      Look-up table

    • C. 

      Automatic Rescaling

    • D. 

      Exposure latitude

  • 2. 
    The x axis of the Histogram represents which of the following?
    • A. 

      Density/brightness values for each pixel

    • B. 

      Contrast values for each pixel

    • C. 

      Number of pixels

    • D. 

      Exposure relative to DlogE

  • 3. 
    Increasing kVp will create a histogram which appears as:
    • A. 

      Wider, Low contrast

    • B. 

      Narrower, Low contrast

    • C. 

      Wider, shorter scale

    • D. 

      Narrower, short scale

  • 4. 
    Provides a method of changing density and contrast on processed digital images?
    • A. 

      Histogram

    • B. 

      Inversion

    • C. 

      Aliasing

    • D. 

      Look-up table

  • 5. 
    The result of the Nyquist Frequency not being sampled at least twice.
    • A. 

      Inversion

    • B. 

      Aliasing/Moire Effect

    • C. 

      Automatic rescaling

    • D. 

      Modulation Transfer function

  • 6. 
    The range of exposures which can be used and produce a diagnostically useful digital image?
    • A. 

      Digital theorem

    • B. 

      Exposure Latitude

    • C. 

      Dynamic Range

    • D. 

      Histogram analysis

  • 7. 
    The ability of a system to record available spatial frequency to produce spatial resolution in the digital environment.
    • A. 

      Aliasing frequency

    • B. 

      Modulation transfer funcion

    • C. 

      Alogrithm

    • D. 

      Matrix

  • 8. 
    Increasing kVp will create what type of window width?
    • A. 

      Increase in window width

    • B. 

      Decrease in window width

    • C. 

      No affect on window width

    • D. 

      KVp controls window level

  • 9. 
    Image stitching can be used in conjunction with which of the following exams?
    • A. 

      Lumbar spine

    • B. 

      Cervical spine

    • C. 

      Hand

    • D. 

      Scoliosis

  • 10. 
    Shuttering helps to eliminate what in your digital image?
    • A. 

      Background densities

    • B. 

      Background noise caused by to little mAs

    • C. 

      Background shades of white

    • D. 

      Blur caused by motion