| Japanese |
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| Title | 生体材料計測におけるlaser Doppler流速計の検討と工夫 |
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| Subtitle | 私の工夫 |
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| Authors | 口脇博治*, 稲尾意秀*, 宮崎保光**, 西村誠一** |
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| Authors(kana) | |
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| Organization | *名古屋大学医学部脳神経外科, **豊橋技術科学大学情報工学系 |
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| Journal | 循環制御 |
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| Volume | 13 |
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| Number | 2 |
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| Page | 295-301 |
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| Year/Month | 1992/ |
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| Article | 報告 |
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| Publisher | 日本循環制御医学会 |
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| Abstract | 「はじめに」Laser Doppler Velocimeter(LDV)の原理と基礎的ことがらについては, すでに文献, 解説書も出版され, いくつかの商品も発売されている. 本論文では実際に得られるデータの根底にある問題に検討を加え, 著者らの経験に基づく血流, 髄液流の管腔内流速のLDV計測の結果や生体に対する安全性について検討を加える. 「I. Laser Doppler Velocimeter(LDV)の生体計測について」Laser Doppler Velocimeter(LDV)を生体での計測に応用することにより, 微小な管腔を流れる液流を穿刺しない状態で測定可能であること, Doppler周波数変化(Dopplerシフト)を掴むことにより流速の推定が可能であること, 生体での速い流れ(血液)から極めて遅い流れ(髄液流)まで同一装置で観察できること, 及び, 実時間に即した計測が可能であることや, 心拍動に同期した流れの速さを把握できるなどの利点がある. |
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| Practice | 基礎医学・関連科学 |
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| Keywords | レーザーDoppler流速計, 光ファイバー, 血流, 髄液流, 照射による組織損傷, laser Doppler velocimeter, blood flow, optic fiber, cerebrospinal fluid flow, irradiation injury |
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| English |
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| Title | A study of blood flow and cerebrospinal fluid flow measurements in biological system using laser Doppler velocimetry |
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| Subtitle | |
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| Authors | Hiroji Kuchiwaki*, Suguru Inao*, Yasumitsu Miyazaki**, Seiichi Nishimura** |
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| Authors(kana) | |
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| Organization | *Department of Neurosurgery Nagoya University School of Medicine, **Department of Information and Computer Science Toyohashi Institute of Technology |
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| Journal | Circulation Control |
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| Volume | 13 |
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| Number | 2 |
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| Page | 295-301 |
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| Year/Month | 1992/ |
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| Article | Report |
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| Publisher | Japan Society of Circulation Control |
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| Abstract | Laser Doppler Velocimeter (LDV) is widely applied to study flow dynamics in clinical materials. The results obtained by LDV include many basic problems to be clarified for the evaluation in flow study. The first one is an optical system with which optic waves are changed into electric signals of high frequency waves and Doppler signals are received. The second one is an application of an opic fiber to LVD. The third one is signal processing system of Doppler phenomenon and obtaining high S/N ratios. The fourth one is damage to the biological system by a long irradiation time of Laser beam. Comments on each material were performed according to the authors' experience. The authors conclude that usefulness of the LDV increases by an application of optic fibers to the optical system and time for irradiation of Laser beam to organs in the living body should be as minimum as possible within a safety limit. |
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| Practice | Basic medicine |
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| Keywords | laser Doppler velocimeter, blood flow, optic fiber, cerebrospinal fluid flow, irradiation injury |
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