| Japanese |
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| Title | Xe-133吸入洗い出し法による肺換気分布解析に関する新しい試み |
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| Subtitle | 原著 |
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| Authors | 影山浩*, 小池潔** |
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| Authors(kana) | |
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| Organization | *香川労災病院内科, **日立メディコ柏工場 |
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| Journal | 核医学 |
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| Volume | 22 |
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| Number | 10 |
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| Page | 1521-1528 |
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| Year/Month | 1985/10 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」 Xe-133吸入洗い出し法による肺換気分布の解析法について次のような新しい試みを実施し, その精度について検討した. 1) 計数単位の設定を64×64マトリックスにおいて, 一行一列おきとし, 周辺を含めた9マトリックスの計数値を用いて32×32マトリックスの画像に表現した. 2) Xeガス処理装置に流量計を接続して洗い出し試験中の換気量を求め, 全肺の計数値が半減するに要した換気量 (V 1/2) を求め, V 1/1/FRCを換気分布不均等の程度をあらわす指標とした. 3) 換気分布不均等の多コンパートメント解析の表現法として, 横軸にT 1/2あるいはV 1/2を, 縦軸に同一のT 1/2あるいはV 1/2を示すコンパートメントの平衡時計数値の総和を示すヒストグラムを作製した. その結果, これらの試みがXe-133洗い出し曲線の解析に有用であると考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Inspired gas distribution, Xe-133 washout test, 50%washout time, Ventilation volume, Multiple compartment analysis |
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| English |
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| Title | An Improved Method for the Multiple Compartment Analysis of the Inspired Gas Distribution by Xe-133 Washout Test |
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| Subtitle | |
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| Authors | Hiroshi KAGEYAMA*, Kiyoshi KOIKE** |
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| Authors(kana) | |
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| Organization | *Kagawa Rosai Hospital, **Hitachi Medico Co., Ltd., Kashiwa Works |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 22 |
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| Number | 10 |
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| Page | 1521-1528 |
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| Year/Month | 1985/10 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] The method of analyzing inspired gas distribution by Xe-133 washout test was improved as follows. 1) We defined measured units as every other cloumn and row in 64×64 matrices and proposed this measure as the functional image of 32×32 matrices. Each measurement count was represented by the sum of the counts of the 9 neighboring matrices. 2) Ventilation volume corresponding to 50% washout time (V 1/2) was measured by flow meter. Thus, V 1/2/FRC was applied as a quantitative representation of unevenness of inspired gas distribution in the lung. 3) Histograms were constructed so as to consist of T 1/2 or V 1/2 in the horizontal axis and the sum of initial counts of the measure unit in which T 1/2 or V 1/2 are the same in the vertical axis. |
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| Practice | Clinical medicine |
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| Keywords | Inspired gas distribution, Xe-133 washout test, 50% washout time, Ventilation volume, Multiple compartment analysis |
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