| Japanese |
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| Title | 位相面表示を用いたRI心室造影法による左室機能の解析に関する研究 |
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| Subtitle | 原著 |
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| Authors | 井出満*, 五島雄一郎** |
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| Organization | *東海大学医学部内科, **指導 教授 |
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| Journal | 核医学 |
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| Volume | 27 |
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| Number | 1 |
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| Page | 23-32 |
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| Year/Month | 1990/1 |
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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」 シングルプローブ法によるRI心室造影法に位相面表示を用いて, 左室機能の評価を行った. パターン分析では, 160名の患者を7つの型に分類し, それらの型からある程度左室機能障害の種類を推定することが可能であった. また, 新たに一回拍出量に対する最大駆出率までに拍出される比率 (peak S) と最大充満率までに充満する比率 (peak D) が表示され, 心房収縮による左室拡張の一回拍出量に対する比 (AC/SV) とその最大充満率も, 従来法に比べてはるかに簡便に算出することができた. これらのパラメータによる左室機能の評価では, 141例の心疾患群のうち105例 (74.5%) に異常が見られ, 従来法による80例と比較してはるかに高率であった. 従来法と位相面表示法とを同時に用いると132例に異常が認められた. したがって, 位相面表示法は, 左室機能の評価を行う上で, 従来法よりも感度の高い診断法であり, 臨床上有用であると考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Radionuclide ventriculography (RNVG) , Single cardiac probe system, Phase plane display, Sodium-iodide probe, Left ventricular function |
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| English |
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| Title | Phase Plane (Volume to Volume-Time Function Loop) Display of the Data from Radionuclide Ventriculogrphy Obtained by Single Cardiac Probe System |
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| Subtitle | Original Articles |
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| Authors | Michiru IDE |
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| Authors(kana) | |
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| Organization | Department of Internal Medicine, Tokai University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 27 |
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| Number | 1 |
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| Page | 23-32 |
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| Year/Month | 1990/1 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] To assess the left ventricular (LV) performance more sensitively, a new display method of phase plane (PP) , displaying volume and volume-time function (dV/dt) in a single image, was applied to radionuclide ventriculography obtained by a single cardiac probe system. In this PP loop, the width of the horizontal axis indicates relative LV volume, and the height of the vertical axis indicates dV/dt. The direction of the rotation of this loop is clockwise. We classified 160 patients with various heart diseases into seven groups, according to the configuration of the loop. And we proposed two new parameters, named peak S and peak D, from this PP display. We can easily detect the left atrial contribution (AC/SV) and its peak rate (peak AC) , which are very sensitive parameters for detecting the left ventricular diastolic function abnormality. With these parameters, we can detect 105 patients (74.5%) with abnormal LV function out of 141 patients with various heart diseases. However, with conventional parameters (named EF, PER, PFR, 1/3 EF) , we can detect only 80 patients (56.7%) with LV dysfunction. Therefore, we conclude that the single image PP display is a sensitive method for assessing the abnormality of the LV function, not only by evaluating the conventional parameters, but also by analyzing the configuration of the volume to volume-time function loop. |
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| Practice | Clinical medicine |
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| Keywords | Radionuclide ventriculography (RNVG) , Single cardiac probe system, Phase plane display, Sodium-iodide probe, Left ventricular function |
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