電子ビームコンピュータトモグラフィーで測定された大動脈弁のカルシフィケーションの評価と臨床的影響
David Messika-Zeitoun1, Marie-Christine Aubry, Delphine Detaint
1Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, Minn 55905, USA.
Circulation
|July 14, 2004
まとめ
電子ビームコンピュータトモグラフィーは,重度の大動脈狭窄症 (AS) の診断に役立つ大動脈弁の結石化 (AVC) を正確に測定します. この方法は,AS患者の独立した予後情報を提供します.
科学分野:
- 心血管画像検査についてです.
- 放射線学 放射線学
- バルブ性心疾患 バルブ性心疾患とは
背景:
- 電子ビームコンピューティングトモグラフィー (EBCT) は冠動脈結石化のために確立されていますが,大動脈弁結石化 (AVC) ではありません.
- AVCに対するEBCTの精度,診断,および予後値,および大動脈狭窄症 (AS) の重症度との関連は,以前は知られていなかった.
研究 の 目的:
- AVCを測定するためのEBCTの正確性と再現性を評価する.
- EBCTで測定されたAVCとASの重症度の関連性を評価する.
- AS患者におけるAVCの診断および予後値を決定する.
主な方法:
- EBCT AVCスコアと病理学カルシウムの体重を相関させるため,30個の大動脈弁を調査したエクビボ分析.
- 100人の患者で心拍動脈動脈動脈のEBCTおよびAS重度による心拍動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈動脈 (AVA) エコカルディオグラフィによるAVCのインビボ測定.
- イベントフリー生存率を評価するための縦断的なフォローアップ.
主要な成果:
- EBCT AVCスコアは病理学カルシウム重量 (r=0.96) と強く相関しており,正確な推定が可能である.
- AVCとAVAの間に強い関連性 (r=0.79) が発見され,補完的な情報を示した.
- AVCスコア≥1100AUは,重度のASに対する93%の感度と82%の特異性を示した.
- 高いAVCスコアは,エコー・カルディオグラフィの調査結果を調整した後でも,有害事象を独立して予測することができました.
結論:
- EBCTは,AVCを測定するための正確で再現可能な方法を提供します.
- EBCTによるAVC測定は,重度のASを診断するのに価値があり,独立した予後情報を提供します.
- AVC評価とAVAを組み合わせることで,AS患者の総合的な評価が可能になります.
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