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Examination Five: Answers

  • Ibrahim Lutfi Shuaib
  • Hafiz M. Zin
  • Mohd Zahri Abdul Aziz
  • Noor Diyana Osman
  • Rafidah Zainon
Chapter

Abstract

  • A1. Regarding display and post-processing of digital radiographic images:
    • A. True. The crystal in each pixel varies in their degree of polarisation when a voltage is placed across them. Manipulation of the level of light transmission to that pixel resulted in the image.

    • B. True. Calibration is performed to ensure that images presented to an observer have equal perceived contrast appearance on all displays.

    • C. True. A typical digital matrix size of 3000 × 3000 and 2 bytes of data per pixel is equal to 18 megabytes (Mb) of data. The size is calculated by multiplying the matrix size with the number of bytes.

    • D. False. Windowing improves contrast and brightness within the image.

    • E. True. Averaging a few images reduces the electronic noise.

References

  1. The Ionising Radiation Regulations (IRR) 1999Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Ibrahim Lutfi Shuaib
    • 1
  • Hafiz M. Zin
    • 1
  • Mohd Zahri Abdul Aziz
    • 1
  • Noor Diyana Osman
    • 1
  • Rafidah Zainon
    • 1
  1. 1.Advanced Medical & Dental InstituteUniversiti Sains MalaysiaPenangMalaysia

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