Usefulness of Top-hat Transform Processing in Whole Body Bone Scintigraphy

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  • Kita Akinobu
    Department of Radiography, University of Fukui Hospital
  • Sugimoto Katsuya
    Department of Radiography, University of Fukui Hospital Division of Health Sciences, Graduate School of Medical Science, Kanazawa University
  • Tsuchida Tatsurou
    Department of Radiology, University of Fukui Hospital
  • Kishimoto Takahiro
    Department of Radiography, University of Fukui Hospital
  • Toi Akiko
    Department of Radiography, University of Fukui Hospital
  • Shimada Masato
    Department of Radiography, University of Fukui Hospital
  • Adachi Toshiki
    Department of Radiography, University of Fukui Hospital

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Other Title
  • 骨シンチグラフィ全身プラナー像におけるTop-hat変換処理の有用性に関する検討
  • ホネ シンチグラフィ ゼンシン プラナーゾウ ニ オケル Top-hat ヘンカン ショリ ノ ユウヨウセイ ニ カンスル ケントウ

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Abstract

To assess the usefulness of top-hat transform processing in whole body bone scintigraphy, five radiological technicians interpreted both original and top-hat processed images to determine the improvement of lesion detectability and interpretation time. For the evaluation of detectability, receiver operating characteristic (ROC) analysis was performed. The area under the curve (AUC) calculated from the ROC curve was improved in all observers (from 0.786 to 0.864 in average), although no significant difference was observed. However, the interpretation time was improved significantly (from 24.5 to 16.2 s in average). Top-hat transform processing in whole body bone scintigraphy is thought to be useful for the improvement of lesion detectability and interpretation time.

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