彩色多普勒血流会聚法定量诊断二尖瓣狭窄的研究

Quantification of Mitral Stenosis by Color Doppler Flow Convergence Region

本研究应用Ｍ型彩色多普勒血流会聚法、二维彩色多普勒血流会聚法测量２１例以二尖瓣狭窄为主的风心病患者二尖瓣狭窄瓣口面积，并分别与二维超声直接测面积法及多普勒超声压力减半时间法所测二尖瓣口面积相比较。结果表明，Ｍ型彩色多普勒血流会聚法与二维彩色多普勒血流会聚法在检测二尖瓣狭窄瓣口面积方面基本可靠，但两者的准确性无显著差异。本文初步分析了Ｍ型彩色多普勒血流会聚法及二维彩色多普载血流会聚法测量二尖瓣狭窄瓣口面积的优缺点及临床价值。

patients with mitral stenosis were prospectively studied. The mitral areas were evaluated by M-mode color Doppler flow convergence region and two-dimensional color Doppler flow convergence region,and compared with the results by two-dimensional echocardiography planimetry and pressure half-time.It was concluded that M-mode and two-dimensional color Doppler flow convergence region could be used to quantificate the area of mitral stenosis accurately.In this study we analyzed the superiority,limitations and clinical application of M-mode and two-dimensional color Doppler flow convergence region in quantification of mitral stenosis.