| Japanese |
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| Title | テクネガスによる肺換気イメージング : 肺沈着率および換気・血流分布の検討 |
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| Subtitle | 原著 |
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| Authors | 分校久志*, 瀬戸幹人*, 久慈一英*, 宮内勉*, 久田欣一* |
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| Organization | *金沢大学医学部核医学教室 |
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| Journal | 核医学 |
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| Volume | 28 |
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| Number | 3 |
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| Page | 229-239 |
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| Year/Month | 1991/3 |
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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」99mTcガス (テクネガス) 肺換気イメージングにおける吸入方法の最適化を目的に, 吸入方法と肺沈着率の関係を検討した. 肺癌, 慢性閉塞性肺疾患, 肺塞栓症などの35例 (36検査) を対象として, 亜最大吸入 + 息こらえ (BH群), 亜最大連続吸入 (C群), TVレベルの持続吸入 (TV群) を行った. 肺沈着率はBH群で平均6.6〜7.4%/LDと他群より有意に高く (p < 0.05 - 0.001), C群では吸入回数とともに増加した. TV群の肺沈着率は最も低かった. 肺 / フィルター比 (L / F) はBH群で高値であった. テクネガス換気イメージの画質はBH群で他群より有意に良好であった. 中枢気道でのhot spot形成は15%にみられ, すべてTVおよびC群であった. テクネガスの肺沈着率の改善には十分な息こらえが重要であり, またL / Fは適正な吸入の判定指標であった. 協調性の低い患者ではTV吸入が適していた. テクネガスは安全で簡便に良好な画像が得られ, 肺換気イメージングに有用であった. |
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| Practice | 臨床医学：一般 |
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| Keywords | Technegas, lung deposition, inhalation method, ventilation / perfusion. |
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| English |
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| Title | Lung Ventilation Imaging with TECHNEGAS : Clinical Study of Lung Deposition and Ventilation / Perfusion |
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| Subtitle | Original Articles |
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| Authors | Hisashi BUNKO, Mikito SETO, Ichiei KUJI, Tsutomu MIYAUCHI, Kinichi HISADA |
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| Authors(kana) | |
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| Organization | Department of Nuclear Medicine, Kanazawa University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 28 |
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| Number | 3 |
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| Page | 229-239 |
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| Year/Month | 1991/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] In order to optimize inhalation method for lung ventilation imaging with Tc-99m-gas (TECHNEGAS), relation between lung deposition of TECHNEGAS and inhalation method was evaluated. Submaximal inhalation with breath-holding (BH), continuous submaximal inhalation (C) and tidal inhalation (TV) were compared in 35 patients (36 studies) with various lung diseases. Mean lung deposition of TECHNEGAS was 6.6 - 7.4%/LD in BH group and was significantly higher than other groups of inhalation method (p < 0.05 - 0.001). Lung deposition increased according to the times of inhalation in C group. TV group resulted in the lowest lung deposition which was same as 5 times of inhalation in C group. Lung / filter ratio (L / F) was highest in BH group. Image quality of TECHNEGAS was significantly better in BH group. Hot spot in central airway was seen in 15% of patients. All of them was in TV or C groups. In order to improve lung deposition and image quality of the TECHNEGAS, sufficient breath-holding was important. L / F seemed to be the index of effective inhalation of the TECHNEGAS. TV was suitable for poorly cooperative or dyspneic patients. TECHNEGAS was useful for evaluation of lung ventilation to provide good quality image with safety and simplicity. |
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| Practice | Clinical medicine |
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| Keywords | Technegas, lung deposition, inhalation method, ventilation / perfusion. |
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