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首页> 外文期刊>European heart journal cardiovascular Imaging >Accurate measurement of mitral annular area by using single and biplane linear measurements: Comparison of conventional methods with the three-dimensional planimetric method
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Accurate measurement of mitral annular area by using single and biplane linear measurements: Comparison of conventional methods with the three-dimensional planimetric method

机译：通过使用单平面和双平面线性测量来精确测量二尖瓣环区域：传统方法与三维平面法的比较

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Aims: The planimetry method using three-dimensional (3D) echocardiography is useful for providing an accurate mitral annulus area (MAA) value. However, this method is relatively unavailable. Therefore, we evaluated the accuracy of conventional methods for MAA measurement compared with that of 3D planimetry. Methods and results: Two-dimensional (2D) and 3D transoesophageal echocardiography (TEE) were performed in 70 patients. The mitral annulus diameter (MAD) was measured using four standard TEE imaging planes: four-chamber (4Ch), two-chamber (2Ch), anterior-posterior (LAX), and commissure-commissure (CC). MAA was calculated using a single diameter based on that of a circle and using two diameters based on that of an ellipse. MAA measurements using the single 4Ch MAD method (r = 0.84, P < 0.001), and two anatomically orthogonal MAD method in 4Ch/2Ch (r = 0.93, P < 0.001) and LAX/CC (r = 0.97, P < 0.001) planes correlated with 3D planimetric MAA measurements. Further analysis with Bland-Altman plots revealed that the LAX/CC MAD measurement exhibited the closest limits of agreement with the 3D planimetric MAA measurement. Notably, in patients showing an elliptical annulus shape, only LAX/CC MAD, but not 4Ch or 4Ch/2Ch MAD, provided results comparable with those of 3D planimetric MAA measurements. However, in patients with a circular annulus shape, reliable MAA measurements can be achieved using either single 4Ch MAD or any biplane MAD. Conclusion: Conventional LAX/CC MAD can be recommended for MAA measurements in a diverse patient population. This method is applicable as an alternative to the 3D planimetric method, regardless of the mitral annulus shape. Published on behalf of the European Society of Cardiology. All rights reserved.
机译：目的：使用三维（3D）超声心动图的平面法可用于提供准确的二尖瓣环面积（MAA）值。但是，这种方法相对不可用。因此，我们评估了传统MAA测量方法与3D平面测量法相比的准确性。方法和结果：对70例患者进行了二维（2D）和3D经食道超声心动图（TEE）检查。使用四个标准TEE成像平面测量二尖瓣环直径（MAD）：四腔（4Ch），二腔（2Ch），前后（LAX）和连合-连合（CC）。 MAA使用一个基于圆的直径和两个基于椭圆的直径来计算。使用单一4Ch MAD方法（r = 0.84，P <0.001）和在4Ch / 2Ch（r = 0.93，P <0.001）和LAX / CC（r = 0.97，P <0.001）中的两种解剖正交MAD方法进行MAA测量与3D平面MAA测量相关的平面。使用Bland-Altman图进行的进一步分析表明，LAX / CC MAD测量显示出与3D平面MAA测量最接近的极限。值得注意的是，在显示椭圆环形状的患者中，只有LAX / CC MAD却没有4Ch或4Ch / 2Ch MAD，其结果可与3D平面MAA测量的结果相媲美。但是，对于具有环形瓣环形状的患者，可以使用单个4Ch MAD或任何双翼MAD来实现可靠的MAA测量。结论：常规LAX / CC MAD可推荐用于不同患者群体的MAA测量。无论二尖瓣环的形状如何，该方法都可以替代3D平面法。代表欧洲心脏病学会出版。版权所有。

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