顎関節 MR 画像における骨表面の抽出 : 可変形状モデルの応用 Bone Surface Extraction from MR Images of a Temporomandibular Joint Using Deformable Modeling Technique

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著者

    • 三浦 周 MIURA Amane
    • 郵政省通信総合研究所関東支所 鹿嶋宇宙通信センター宇宙通信技術研究室 Satellite Communications Section, Kashima Space Research Center, Communications Research Laboratory, Ministry of Posts and Telecommunications
    • 渡辺 誠 WATANABE Makoto
    • 東北大学歯学部高齢者歯科学講座 Department of Geriatric Dentistry, Tohoku University School of Dentistry
    • 塚原 保夫 TSUKAHARA Yasuo
    • 東北大学大学院情報科学研究科情報生物学講座 Laboratory of Information Biology, Graduate School of Information Sciences, Tohoku University

抄録

This paper presents a two-step method, based on magnetic resonance (MR) images, for threedimensional reconstruction of osseous components of a temporomandibular joint (TMJ), the mandibular condyle and the fossa. In the first step, images were segmented in order to extract the bony outline (contour) by using a two-dimensional deformable model. An object in the model was extracted by deforming the initial contour located near the object of the image. In the second step, using the surface reconstructed from the extracted contour as the initial surface, a three-dimensional deformable model was applied in order to extract the surface of the object. These procedures were handled semi-automatically. Multi-section 1-mm-thick sagittal images of the right normal TMJ were obtained with a 1.5-T MR system and surface coils by using a FLASH-3 D sequence (TR=50ms, TE=11ms) from an asymptomatic volunteer (male, age 31 years). From these images, the bony surfaces of TMJ were extracted using the above-mentioned method. Even though the extracted surfaces were a little smaller than the surface traced by e xperienced dentists, they showed the normal, anatomical form of TMJ.

収録刊行物

  • 日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society

    日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society 43(5), 929-939, 1999-10-10

    Japan Prosthodontic Society

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各種コード

  • NII論文ID(NAID)
    10008174844
  • NII書誌ID(NCID)
    AN00197911
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03895386
  • データ提供元
    CJP書誌  J-STAGE 
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