エピカルディアの冠動脈血管樹の基本的な構造-機能関係. 拡散性冠動脈疾患のための定量冠動脈動脈撮影の基礎
C Seiler1, R L Kirkeeide, K L Gould
1University of Texas Medical School, Houston 77030.
Circulation
|June 1, 1992
まとめ
Quantitative coronary arteriographyは,現在,冠動脈の大きさを心筋離床の大きさと相関させることで,拡散冠動脈疾患を定量化することができます. この方法は,拡散性疾患の患者における動脈のサイズが著しく過小評価されていることを示しています.
科学分野:
- 心血管画像検査についてです.
- バイオメディカルエンジニアリング
- 定量解剖学とは
背景:
- 定量冠動脈動脈造影 (QCA) は,局所的な狭窄性病変のために確立されています.
- QCAは,現在,遠心筋の質量に相対する未知の正常動脈の寸法のために,拡散性冠動脈疾患を評価することはできません.
研究 の 目的:
- 臨床冠動脈動脈図を用いて,拡散冠動脈疾患を定量化するための方法を確立する.
- 冠動脈のサイズと遠心筋のベッドのサイズとの正常な関係を決定するために.
- 人間の冠動脈の樹構造を統制する物理的原理を特定する.
主な方法:
- 12人の健康な個人と17人の冠動脈疾患患者の臨床冠動脈動脈図の分析.
- 定量冠動脈動脈造影は,面面積,遠端の枝の長さ,および地域性心筋質量を測定する.
- 観察された血管の幾何学を3つの理論的物理原理と比較する.
主要な成果:
- 健康状態と病気状態の両方で,冠動脈膜面積と遠心筋質量/枝長との間に強い相関関係がある.
- 拡散性疾患の患者の冠動脈は,対照群と比較して,遠心筋床のサイズに比べて30~50%の小さな面を示しています.
- 冠動脈樹の構造は,恒定の流動速度ではなく,最小のエネルギー損失と適応性切断ストレスの原理に準拠しています.
結論:
- 確立された相関は,臨床動脈図から拡散性冠動脈疾患を定量化するための基礎を提供します.
- このアプローチにより,拡散性動脈硬化症の客観的な評価が可能になり,診断能力が向上します.
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