| Japanese |
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| Title | 携帯用RI心機能モニター (VEST) による心機能評価 - (第1報) 基礎検討 - |
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| Subtitle | 原著 |
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| Authors | 玉木長良*, H.William STRAUSS** |
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| Organization | *京都大学医学部放射線核医学科, **Nuclear Medicine Division, Massachusetts General Hospital |
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| Journal | 核医学 |
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| Volume | 24 |
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| Number | 3 |
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| Page | 289-296 |
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| Year/Month | 1987/3 |
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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」携帯用RI心機能モニター(VEST)はRI検出器付きジャケットで, 検出器を左室領域に固定することにより, 種々の環境下で心機能の長時間モニターが可能である. 本装置を51例に応用し, 基礎的検討を行った. まず安静坐位での15秒平均の左室駆出率(EF)は変動が少なく(標準偏差で1.1-3.5%), 異なる検者間での再現性も高かった(r=0.94). またガンマカメラより算出されたEFとの間に安静時r=0.92, エルゴメータによる多段階運動負荷時r=0.86と高い相関が得られた. 一方左室拡張末期容積(%EDV)の変化を坐位から臥位および臥位+下肢挙上にて検討すると, ガンマカメラによる%EDVとの間にr=0.81と有意な相関が得られた. VESTは高感度のRIプローブを用いるため, 15秒平均でも変動の少ない左室機能の評価が可能である. また得られたEF, %EDVはガンマカメラの値とよく一致し, 十分信頼性が高いと考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Radionuclide ventriculography, Tc-99m red blood cells, Ejection fraction, Ambulatory monitor. |
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| English |
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| Title | Assessment of Cardiac Function by an Ambulatory Ventricular Function Monitor (VEST) - (1) Validation - |
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| Subtitle | Original Articles |
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| Authors | Nagara TAMAKI*, H.William STRAUSS** |
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| Authors(kana) | |
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| Organization | *Department of Radiology and Nuclear Medicine, Kyoto University School of Medicine, **Nuclear Medicine Division, Massachusetts General Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 24 |
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| Number | 3 |
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| Page | 289-296 |
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| Year/Month | 1987/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]An ambulatory ventricular function monitor (VEST) consists of two miniature type radio-nuclide probes attached to the plastic jacket, battery, data logger and a portable recorder. This instrument permits continuous measurement of left ventricular time activity curves and ECG in ambulatory subjects. To validate the measurement of left ventricular function with the VEST, 51 subjects were studied with sequential gamma camera and VEST measurements. The variability of the 15 second averaged ejection fraction (EF) over 2 minutes while sitting quietly was 1.1-3.5% (1 sd). The reproducibility of resting EF with positioning by two different observers was excellent (r=0.94). The EF was correlated with the gamma camera EF both at rest (r=0.92) and during each step of bicycle exercise (r=0.86). Furthermore, relative end diastolic volume (%EDV) changes from sitting to lying or lying + leg raising correlated with %EDV changes by the gamma camera (r=0.81). We conclude that the VEST permits assessment of left ventricular function as accurately as the gamma camera in ambulatory subjects. |
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| Practice | Clinical medicine |
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| Keywords | Radionuclide ventriculography, Tc-99m red blood cells, Ejection fraction, Ambulatory monitor. |
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