Usefulness of measuring changes in pixel value on breathing chest radiographs:

DOI DOI IR
  • TANAKA Rie
    Division of Health Sciences, Radiology, Graduate School of Medical Science, Kanazawa University
  • SANADA Shigeru
    Division of Health Sciences, Radiology, Graduate School of Medical Science, Kanazawa University
  • FUJIMURA Masaki
    Department of Cellular Transplantation Biology, Respiratory Tract Medicine, Graduate School of Medical Science, Kanazawa University
  • YASUI Masahide
    Department of Cellular Transplantation Biology, Respiratory Tract Medicine, Graduate School of Medical Science, Kanazawa University
  • HAYASHI Norio
    Department of Radiology, Kanazawa University Hospital
  • OKAMOTO Hiroyuki
    Division of Health Sciences, Radiology, Graduate School of Medical Science, Kanazawa University
  • TSUJI Shiro
    Division of Health Sciences, Radiology, Graduate School of Medical Science, Kanazawa University
  • NANBU Yuko
    Department of Clinical Laboratory, Kanazawa University Hospital
  • MATSUI Osamu
    Department of Radiology, Graduate School of Medical Science, Kanazawa University

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Other Title
  • 胸部X線動画像におけるピクセル値変化量計測の有用性 :
  • 放射性同位元素 (RI) 計数値との比較
  • Comparison with count of radioactive isotope

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Abstract

X-ray translucency of the lungs changes depending on inspired volume. In this study, the usefulness of measuring changes in pixel value on dynamic chest radiographs was assessed in comparison with count of radioactive isotope. In 12 abnormal subjects, there was a good correlation between them (r=0.77) . In eight normal controls, the changes in average pixel value measured in lung unit were almost equal in the right and left lungs, which was consistent with normal respiratory physiology. The results indicated that ventilation performance could be evaluated based on the changes in pixel value on dynamic chest radiographs.

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