| Japanese |
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| Title | 振幅値比を用いた左室逆流性弁膜疾患の逆流の定量的評価 - 駆出カウント比との比較 - |
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| Subtitle | 原著 |
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| Authors | 小須田茂*, 佐藤仁政**, 与那原良夫**, 安里哲好***, 内藤政人***, 西口郁****, 尾川浩一****, 久保敦司****, 橋本省三**** |
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| Authors(kana) | |
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| Organization | *国立大蔵病院放射線科, **国立東京第二病院核医学センター, ***循環器科, ****慶応義塾大学医学部放射線医学教室 |
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| Journal | 核医学 |
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| Volume | 22 |
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| Number | 4 |
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| Page | 459-466 |
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| Year/Month | 1985/4 |
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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」フーリエ解析による心室の振幅値の総和は駆出量を反映すると考えられることから, 左室逆流性弁膜疾患を含む各種心疾患患者に対し, 駆出カウント比と振幅値比を同時に求め, 両者の比較検討を行った.左室逆流性弁膜疾患群 (13例) および非逆流群 (30例) の駆出カウント比の平均は, それぞれ2.22±1.11, 1.24±0.41 (p<0.005) を示したのに対し, 振幅値比の平均は, それぞれ2.52±0.87, 1.36±039 (P<0.0005) を示した.振幅値比は検出器の傾斜角度にほとんど依存せず, 振幅値比算出における単純繰り返し操作および異なる検者間の再現性はともに良好であった (r=0.95, r=0.91) .フーリエ解析に基づく振幅値比は非侵襲的で繰り返し検査が可能であり, 左室逆流性弁膜疾患の逆流の定量的評価法として有用であると思われる. |
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| Practice | 臨床医学：一般 |
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| Keywords | Valvular regurgitation. Multigated equilibrium scintigraphy, Fourier analysis, Amplitude ratio |
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| English |
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| Title | Quantitative Assessment of Left-sided Valvular Regurgitation Using the Fourier Amplitude Ratio - Comparison with the Stroke Count Ratio - |
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| Subtitle | Original Articles |
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| Authors | Shigeru KOSUDA*, Jinsei SATOH**, Yoshio YONAHARA**, Tetsuyoshi ASATO***, Masahito NAITO***, Iku NISHIGUCHI****, Koichi OGAWA****, Atsushi KUBO****, Shozo HASHIMOTO**** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, Okura National Hospital, **Division of Nuclear Medicine, the Second Tokyo National Hospital, ***Cardiology Department, the Second Tokyo National Hospital, ****Department of Radiology, Keio University, School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 22 |
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| Number | 4 |
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| Page | 459-466 |
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| Year/Month | 1985/4 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Since the amplitude value of a pixel is proportional to the stroke counts of the pixel, the total amplitude value of each ventricle would reflect its own stroke volume. Stroke count ratio (SCR) and ventricular amplitude ratio (VAR) values were simultaneously calculated and compared in 43 subjects, including 13 subjects with valvular regurgitation, after multigated equilibrium scintigraphy was performed. Mean values of SCR in 13 subjects with valvular regurgitation and 30 control subjects were 2. 22+-1.11, 1.24+-0.41, respectively (P<0.005) . Mean values of VAR were 2.52+-0.87, 1.36+-0.39, respectively (p<0.0005) . The VAR method was independent of the tilting angles of the detector, and showed excellent intra-observer and inter-observer reproducibilities (r=0.95, r=0.91) . The VAR method derived from the Fourier amplitude image is a noninvasive technique, is suitable for serial studies, and appears to be a relatively reliable means of assessing the severity of left-sided valvular regurgitation. |
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| Practice | Clinical medicine |
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| Keywords | Valvular regurgitation. Multigated equilibrium scintigraphy, Fourier analysis, Amplitude ratio |
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