| Japanese |
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| Title | テクネガス使用時の漏洩とその対策について |
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| Subtitle | 技術報告 |
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| Authors | 駒谷昭夫*, 安久津徹*, 山口昂一*, 小野寺祐也*, 間中友季子**, 高橋和栄** |
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| Authors(kana) | |
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| Organization | *山形大学医学部放射線科, **放射線部 |
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| Journal | 核医学 |
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| Volume | 33 |
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| Number | 4 |
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| Page | 443-445 |
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| Year/Month | 1996/4 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」テクネガスは超微粒子で, 133Xeや81mKrのような気体とは漏洩や汚染の状況は異なると考えられる. テクネガス吸入中のフィルタ透過後の呼気をポリ袋に収集し, 吸入終了直後, および1, 2, 3, 5, 10分後の呼気も収集した. その後, 被験者の肺部, ポリ袋およびフィルタのactivityをシンチカメラで計測した. フィルタの計数値は肺の約2倍で, フィルタ透過呼気および吸入終了後の被験者の呼気にも吸入装置総放出量の約5%の計数値が測定された. 吸入中の口元から直接的な漏洩がなくとも同室のシンチカメラのバックグラウンドが漸次上昇したのは, 吸入終了後の被験者の呼気が主因と考えられた. 吸入は処置室など別室で行い, さらに, 吸入直後の被験者や使用済みフィルタの取扱いにも細心の配慮が望まれる. 「I. はじめに」肺換気シンチグラム製剤として, 最近99mTcとカーボンを高温下で結合させた超微粒子(テクネガス)が用いられるようになった. |
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| Practice | 臨床医学：一般 |
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| Keywords | 99mTc-gas, Ventilation, Radioprotection, Contamination. |
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| English |
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| Title | Contamination Levels to Room Air Arising from the Use of 99mTc - Gas and Prevention from the Contamination |
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| Subtitle | Technical Reports |
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| Authors | Akio KOMATANI*, Tooru AKUTSU*, Koichi YAMAGUCHI*, Yuuya ONODERA*, Yukiko MANAKA**, Kazuei TAKAHASHI** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, Yamagata University School of Medicine, **Yamagata University Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 33 |
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| Number | 4 |
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| Page | 443-445 |
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| Year/Month | 1996/4 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]99mTc-gas(TECHNEGAS(R))is a 99mTc-labeled micro-aerosol which is considered to have different behavior from 133Xe or 81mKr gas. In order to estimate contamination levels to room air arising from the use of 99mTc-gas, filtered expired air during administration and 1, 2, 3, 5, 10 min after the administration were collected in each polyethylene bag. Radioactivities of the polyethylene bags, used filter and the lung were measured with 3-head scintillation camera. The activity of the expired air diminished within 6-10min and about 5% of whole discharged 99mTc-gas was released to room air. The activity of the used filter was two times of the lung. According to these results, it is recommended that the 99mTc-gas may be administrate in a exclusive room. The administrated patient and used filter must be remain in the exclusive room. |
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| Practice | Clinical medicine |
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| Keywords | 99mTc-gas, Ventilation, Radioprotection, Contamination. |
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