MPR像による解剖学的検討 : 右上葉肺動脈について<画像診断セミナー>  [in Japanese] The Branching Pattern of the Pulmonary Artery in the Right Upper Lobe : Multiplanar Reconstruction (MPR) Images Study  [in Japanese]

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Abstract

目的. Multidetecter-row CT(以下MDCT)では従来の横断面と同じ解像力でmultiplanar reconstruction(以下MPR)で矢状断や冠状断など任意の断面の画像が得られる. MPR像により右上葉動脈,A^2,A^3の分岐様式を検討した.方法.胸部に病変が疑われた症例及び正常ボランティアでMDCTによる検査を施行し,肺野条件によりA^2ai,A^2aii,A^2bi,A^2bii,A^3ai,A^3aii,A^3bi,A^3biiの走行について,上幹動脈から分岐する回帰型か,中間肺動脈幹から分岐する上行型かを検討した.結果.通常,右上葉の肺動脈は上幹動脈から分岐し,気管支の上方に接して走行する.しかしA^2あるいはA^3の区域枝や亜区域枝は中間肺動脈幹から分岐し上行して上葉に入り,気管支の下方に接して走行する.このような気管支と動脈の関係が逆になって走行するものもいくつか認められた.結論.動脈の分岐の検討や気管支の分岐をMPR像で検討することにより,病変に対して詳細な情報や術前の既存構造の情報を提供し,読影医の読影技術の向上こも非常に有用である.(肺癌.2002 ; 42 : 698-701)

Objective. Multidetecter-row CT (MDCT) made the multiplanar reconstruction (MPR) images, coronal image or sagittal image, high resolution as same as axial image. We evaluated the branching pattern of pulmonary artery, A^2 and A^3, in the right upper lobe from the MPR images. Methods. We studied the patients with known or suspected disease of the lung parenchyma and the volunteers using MDCT. We evaluated the arterial variations of A^2ai, A^2aii, A^2bi, A^2bii, A^3ai, A^3aii, A^3bi and A^3bii, arising from either the superior (runk or the ascending artery, which arises from inferior trunk. Results. Usually, the artery in the right upper lobe originates from the superior trunk and runs superior to the bronchi. Sometimes, the pulmonary segmental or sub segmental order artery in A^2 and A^3 originates from the ascending artery runs inferior to the bronchi, which arises from inferior trunk. A few cases showed the relations between the bronchi and the artery paradoxical position. Conclusion. The MPR images can provide the detail information for the assessment of the bronchovascular trees. This technique can also provide the developing faculties reading film for young doctors or residents.(JJLC. 2002 ; 42 : 698-701)

Journal

Japanese Journal of Lung Cancer   [List of Volumes]

Japanese Journal of Lung Cancer 42(7), 698-701, 2002-12-20  [Table of Contents]

The Japan Lung Cancer Society

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Cited by:  2

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Codes

  • NII Article ID (NAID) :
    110003141854
  • NII NACSIS-CAT ID (NCID) :
    AN00203978
  • Text Lang :
    JPN
  • Article Type :
    Journal Article
  • ISSN :
    03869628
  • Databases :
    CJP  CJPref  NII-ELS