| Japanese |
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| Title | 心プール断層法における壁運動定量化と収縮位相の解析 - 長さの変化に基づくフーリエ解析法を用いて - |
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| Subtitle | 原著 |
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| Authors | 中嶋憲一*, 分校久志*, 多田明**, 小島一彦***, 滝淳一*, 南部一朗*, 四位例靖*, 利波紀久*, 久田欣一* |
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| Authors(kana) | |
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| Organization | *金沢大学医学部核医学科, **国立金沢病院放射線科, ***金沢大学医療技術短期大学部 |
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| Journal | 核医学 |
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| Volume | 22 |
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| Number | 3 |
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| Page | 347-353 |
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| Year/Month | 1985/3 |
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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」心室中心から辺縁までの長さの変化に基づく位相解析法を心電図同期心プール断層法に応用し, 断層での壁運動定量化を行った. 2つのパラメータ, 壁運動の短縮率 (%LS) , 位相 (length-based phase) を求め, 従来のカウント法に基づく位相, 振幅解析と比較した. 数学的モデルによる検討では, 従来法より異常運動の程度の評価が容易であり, 精度も良好であった. 心室中心となる重心については, 各フレームについて重心を求める移動座標を用いる方法に比較し, 全フレームで中心を固定した方が, 正確な値が得られた. 本法を用いて, 冠動脈疾患患者において壁運動の定量化が容易にでき, またWPW症候群においては, 本法で推定された早期収縮部位と副刺激伝導路の位置に良好な相関を認めた. ゲート心プール断層像では本質的に輪郭の動きが意味をもつため長さの変化に基づく位相解析法が合理的であり, かつ有用な方法である. |
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| Practice | 臨床医学：一般 |
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| Keywords | Length-based Fourier analysis, Gated blood pool study, Gated emission computed tomography, Phase analysis |
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| English |
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| Title | Quantification of Wall Motion and Phase of Contraction in Tomographic Gated Blood Pool Studies Using Length-Based Fourier Analysis |
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| Subtitle | Original Articles |
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| Authors | Kenichi NAKAJIMA*, Hisashi BUNKO*, Akira TADA**, Kazuhiko KOJIMA***, Junichi TAKI*, Ichiro NAMBU*, Yasushi SHIIRE*, Norihisa TONAMI*, Kinichi HISADA* |
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| Authors(kana) | |
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| Organization | *Department of Nuclear Medicine, School of Medicine, Kanazawa University, **Department of Radiology, Kanazawa National Hospital, ***School of Paramedicine, Kanazawa University |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 22 |
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| Number | 3 |
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| Page | 347-353 |
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| Year/Month | 1985/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Length-based Fourier analysis, a new method for quantification of wall motion and timing of contraction, was applied to tomographic gated blood pool study. Two parameters, percent-length shortening (%LS) and length-based phase were calculated based on the time-length curves from a center to ventricular edges, and compared with the count-based method. In mathematical models for tomographic gated blood pool images, the severity of asynergy was easily determined by length-based method, and the accuracy of the parameters was good. As to the setting of the center, fixed center provided more reliable parameters than the method using movable center, i.e., when a center of gravity was determined in each frame. By length-based Fourier analysis, quantification of wall motion was easily performed, and the initial inward movement caused by the accessory conduction pathway was assessed in patients with Wolff-Parkinson-White syndrome. Length-based approach was considered to be reasonable and effective because the movements of the ventricular edges are essential in tomographic gated blood pool images. |
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| Practice | Clinical medicine |
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| Keywords | Length-based Fourier analysis, Gated blood pool study, Gated emission computed tomography, Phase analysis |
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