| Japanese |
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| Title | 心電図同期心プール断層法による右室機能の評価 - 右室梗塞および下壁梗塞例における検討 - |
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| Subtitle | 原著 |
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| Authors | 高橋雅治* |
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| Authors(kana) | |
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| Organization | *群馬大学医学部第二内科 |
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| Journal | 核医学 |
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| Volume | 29 |
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| Number | 2 |
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| Page | 221-231 |
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| Year/Month | 1992/2 |
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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」心電図同期心プール断層法(GSPECT)を用いて正常対照10例(N群), 右室梗塞の血行動態的診断基準を満たした右室梗塞6例(RVI群)および血行動態的診断基準を満たさなかったが, 右冠動脈近位部に責任病変を認めた下壁梗塞8例(II群)の右室機能評価を行った. GSPECTの応用により, 従来の心電図同期心プール法では困難であった右室と右房の分離右室関心領域の設定が容易となった. GSPECTにおけるバックグラウンド処理として至適カットオフ値を用い, 各時相で3次元的に肺内放射活性を除去した. RVI群およびII群では, N群と比較し右室駆出率, 右室最大収縮速度, 右室拡張早期最大充満速度が有意に低下しており, GSPECTより求めたファンクショナルイメージでは, RVI群だけでなくII群においても全例に局所壁運動異常を認めた. 右冠動脈近位部に責任病変をもつ下壁梗塞では, 血行動態的診断基準を満たさない場合にも右室梗塞を合併している可能性が高いと考えられた. GSPECTを応用した本法は, 右室の定量的機能評価, 局所壁運動の評価および右室梗塞の診断に有用であった. |
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| Practice | 臨床医学：一般 |
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| Keywords | Gated pool SPECT, Right ventricular function, Right ventricular infarction, Background subtraction, Functional image. |
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| English |
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| Title | Assessment of Right Ventricular Function Using Gated Blood Pool Single Photon Emission Computed Tomography in Inferior Myocardial Infarction with or without Hemodynamically Significant Right Ventricular Infarction |
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| Subtitle | Original Articles |
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| Authors | Masaharu TAKAHASHI |
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| Authors(kana) | |
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| Organization | Second Department of Internal Medicine, Gunma University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 29 |
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| Number | 2 |
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| Page | 221-231 |
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| Year/Month | 1992/2 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Right ventricular function was assessed using gated blood pool single photon emission com-puted tomography (GSPECT) in 10 normal subjects and 14 patients with inferior myocardial infarction. Three-dimensional background subtraction was achieved by applying an optimal cut off level. The patient group consisted of 6 patients with definite hemodynamic abnormalities indicative of right ventricular infarction (RVI) and 8 other patients with significant obstructive lesion at the proximal portion of right coronary artery without obvious hemodynamic signs of RVI. Right ventricular regional wall motion abnor-malities were demonstrated on GSPECT functional images and the indices of right ventricular func-tion (i.e. the right ventricular ejection fraction (RVEF), the right ventricular peak ejection rate (RVPER) and the right ventricular peak filling rate (RVPFR)) were significantly reduced in the patient group, not only in the patients with definite RVI but also in those without hemodynamic signs of RVI. The present study indicates that inferior infarction is frequently associated with RVI, even in the absence of definite hemodynamic signs, when the proximal portion of right coronary artery is obstructed. It is concluded that GSPECT is reliable for the assessment of right ventricular function and regional wall motion, and is also useful for the diagnosis of RVI. |
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| Practice | Clinical medicine |
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| Keywords | Gated pool SPECT, Right ventricular function, Right ventricular infarction, Background subtraction, Functional image. |
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