乳房Ｘ線写真におけるスピキュラ自動検出のための多段型振り子フィルタの開発

DOI

書誌事項

タイトル別名
  • Development of a Multistage Pendulum Filter for Automatic Spicule Detection on Mammographic Mass.

抄録

Existence of spicules around a mass is one of the important signs which characterize malignant tumors. In this study, we developed a new automated method for detecting spicules for each mass on mammograms and determined a spicule feature value. Digital mammograms were obtained with a laser film scanner with 0.1-mm sampling distance and 10-bit density resolution. After the smallest rectangular region containing the mass area was cut off and high-frequency components were enhanced by using an unsharp-mask filter, the magnitude components of density gradient vectors were calculated within the segmented mass area. The detection was performed by using a “multistage pendulum filter” which was newly developed. Then, the spicule feature value, which indicates the degree of “spicule presence” around the mass, was calculated from the detected spicules. The multistage pendulum filter was evaluated with 71 Japanese women's digitized mammograms, and it was able to show the most of the spicules that a radiologist pointed; the sensitivity of 88.5% and specificity of 80.0% were obtained, which demonstrates the effectiveness of our proposed method.

収録刊行物

詳細情報 詳細情報について

  • CRID
    1390001204557190528
  • NII論文ID
    130004111612
  • DOI
    10.11239/jsmbe1963.37.171
  • ISSN
    21855498
    00213292
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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