心臓の平衡状態の血液プールから計算されたコンピュータ化された核探査機を用いたビート・トゥ・ビート左心室のパフォーマンスを評価した
Circulation
|January 1, 1981
まとめ
新しいコンピュータ化された非イメージングスシンチレーションプローブは,連続的なビート・トゥ・ビート左心室のエジェクション分数を正確かつ確実に測定します. このポータブルデバイスは,心電図ゲートなしで,リアルタイムで心臓のパフォーマンスを評価するための実行可能な方法を提供します.
科学分野:
- 心臓病学 心臓病学
- メディカルイマージング (医学イメージング)
- バイオメディカルエンジニアリング
背景:
- 左心室 (LV) のパフォーマンスの継続的なビート・トゥ・ビート評価は,心臓の病理生理学を理解するために重要である.
- 既存の方法は,リアルタイムのデータ取得に制限があるか,心電図ゲーティングを必要とする可能性があります.
研究 の 目的:
- 継続的なビートツービートLVエジェクション分数 (LVEF) 評価のための新しいコンピュータ化された非イメージングシンチレーションプローブの実現可能性,正確性,再現性を評価する.
- 探査機が心電図ゲートなしでリアルタイムでLVボリューム曲線を生成できるかどうかを判断する.
主な方法:
- 71人の患者で,LVのパフォーマンスを評価するために,画像処理を施さない,携帯可能なシンチレーションプローブが使用されました.
- コンピュータ化されたアルゴリズムとオペレーターのルーチンは,LVと背景の興味のある領域のための標準化された探査機の位置付けを標準化しました.
- ビート・トゥ・ビート (Beat-to-beat) のLVEFは,探査データから計算され,マルチクリスタルシンチレーションカメラを用いたファーストパス研究と比較した.
主要な成果:
- 探査機は,LVEF値の広い範囲 (15-81%) にわたるファーストパス研究と高い相関関係 (r = 0.92) を実証しました.
- 初期および再分析 (r = 0.97) と研究 (r = 0.94) の間には優れた一致性が見られた.
- ビートからビートまでのLVEF測定値の絶対的変動率は+/- 5.9% (± 2 SD) でした.
結論:
- コンピュータ化された非イメージングスシンチレーションプローブは,継続的なビートツービートLVEFモニタリングのための実現可能で,正確で,再現可能なツールです.
- このテクニックは,ビート・トゥ・ビート心臓データを要求する病理生理学的状態を調査するための信頼できる方法を提供します.
- ポータブルな性質と心電図ゲーティングの必要性がないことが,その臨床的有用性を高める.
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S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
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Jugular Venous Pressure (JVP) Measurement
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S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.


