| Japanese |
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| Title | 携帯用RI心機能モニター (VEST) の基礎的検討 - バックグラウンドを中心に - |
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| Subtitle | 原著 |
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| Authors | 大嶽達*, 渡辺俊明*, 小坂昇*, 百瀬敏光*, 西川潤一*, 飯尾正宏*, 川久保清**, 戸田為久**, 望月孝俊**, 芹沢剛**, 杉本恒明** |
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| Organization | *東京大学医学部放射線科, **第二内科 |
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| Journal | 核医学 |
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| Volume | 25 |
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| Number | 8 |
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| Page | 775-787 |
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| Year/Month | 1988/8 |
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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」携帯用RI心機能モニター(VEST)を用いて33例で運動負荷または薬物負荷における左室機能の変化を測定し, 本装置の基礎的検討を行った. バックグラウンドとして右肺野のカウントの変化を測定し, 左室拡張末期カウントの変化と比較したが, 両者の相関は良好であった(運動および体位:y=0.99+0.68x, r=0.85, 薬物:y=0.09+0.54x, r=0.83). ただし, 後者に比べ, 肺野のカウントの変化はやや小さい傾向であったが, 左室拡張末期カウントの一定の割合をバックグラウンドとして用いる方法は合理的と考えた. その割合を70%の場合と75%の場合で比較したが, 後者のほうが, 心カテ検査との相関直線はy=xに近かった. 15秒加算データでも左室機能の各指標の統計変動は小さく, VESTは位置ずれさえ起こさなければ各種負荷による左室機能の連続的変化を評価するのに非常に優れた装置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 | Heart, Blood pool study, Tc-99m red blood cell, Ejection fraction, Ventricular function. |
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| English |
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| Title | The Validation of an Ambulatory Ventricular Function Monitor (VEST) - Especially as to Background - |
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| Subtitle | - Original Articles - |
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| Authors | Tohru OHTAKE*, Toshiaki WATANABE*, Noboru KOSAKA*, Toshimitsu MOMOSE*, Junichi NISHIKAWA*, Masahiro IIO*, Kiyoshi KAWAKUBO**, Iku TODA**, Takatoshi MOCHIZUKI**, Takashi SERIZAWA**, Tsuneaki SUGIMOTO** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, **The Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 25 |
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| Number | 8 |
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| Page | 775-787 |
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| Year/Month | 1988/8 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | We monitored the change of left ventricular function during various exercise and drug administration in 33 cases using an ambulatory left ventricular function monitor (VEST). To validate the measurement of left ventricular function with the VEST, we compared the change of lung count (LC) with that of LV end-diastolic count (LVEDC) during exercise and drug administration. The relation between the change of LC and LVEDC was good (exercise: y=0.99+0.68x, r=0.85, n=78, durg administration: y=0.09+0.54x, r=0.83, n=62). Although the change of LC was apt to slightly lower than that of LVEDC, we think we can use constant ratio of LVEDC as background in VEST generally. We compared 75% of LVEDC and 70% of LVEDC as background in VEST. EF calculated by VEST using both background correlated well with X-ray left ventriculography (r=0.82, r=0.82) and gamma camera (r=0.78, r=0.78), but the regression line of EF using 75% of LVEDC was closer to the y=x line than that using 70% of LVEDC. The valiability of the 15 second averaged data in VEST over 2-8 minutes while resting state in 26 cases was 1.23% (%EDV), 2.38% (%ESV), 2.41% (EF), 2.03%(%CO), 1.85 (HR) in average. We conclude that VEST is very useful for evaluating continuous change of left ventricular function if the motion artifact is eliminated. |
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| Practice | Clinical medicine |
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| Keywords | Heart, Blood pool study, Tc-99m red blood cell, Ejection fraction, Ventricular function. |
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