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A new formula for rapid assessment of pericardial effusion volume by computed tomography

机译：通过计算断层扫描快速评估心包积液量的新公式

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摘要

Rationale and Objectives: The aim of this study was to evaluate a new formula for the rapid assessment of pericardial effusion (PE) volume by computed tomography. Materials and Methods: Twenty computed tomographic scans positive for PE were reviewed by two observers. Diameters of PE were measured at four locations. Additionally, PE volume was assessed by volumetry. The correlation between PE diameters and volume was evaluated, and a linear equation was derived for each diameter location. To test validity and reliability of the measurements, intraclass correlation and Bland-Altman analysis were performed. Results: Good validity was expressed by strong correlations between diameter measurements at all four locations and PE volume (all. R values >0.80 and. P values <.0001). Intraclass correlation (all coefficients >0.75) and Bland-Altman analysis revealed good interobserver and intraobserver reliability of diameter measurements. The best values were observed for apical diameter measurements. The following linear equation was derived for apical diameter measurements: PE volume = 296 (mL/cm) × apical diameter (cm) - 32 mL. Conclusions: PE volume can rapidly be assessed by apical PE diameter measurement using the simplified formula PE volume = 0.3 (L/cm) × apical diameter (cm).
机译：理由和目标：本研究的目的是评估通过计算断层扫描的心包积液（PE）体积的快速评估新配方。材料和方法：由两个观察员审查了二十计算机断层扫描PE阳性。在四个位置测量PE的直径。另外，通过体积评估体积体积。评估PE直径和体积之间的相关性，并且为每个直径位置导出线性方程。为了测试测量的有效性和可靠性，进行脑内相关性和平坦-Altman分析。结果：在所有四个位置和PE卷之间的直径测量之间的强烈相关性表达了良好的有效性（全部。r值> 0.80和。p值<.0001）。脑内相关性（所有系数> 0.75）和Bland-Altman分析显示出直径测量的良好的Interobserver和intraobserver可靠性。观察到最佳值用于顶部直径测量。导出以下线性方程用于顶部直径测量：PE体积= 296（ml / cm）×顶部直径（cm） - 32 ml。结论：使用简化的公式PE体积= 0.3（L / cm）×顶直径（cm），通过顶点PE直径测量可以快速评估PE体积。

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  • 来源
    《Academic radiology》 |2012年第6期|共5页
  • 作者

    GrothM.; RegierM.; MuellerleileK.; BannasP.; AdamG.; HenesF.O.;

  • 作者单位

    Center for Radiology and Endoscopy Department of Diagnostic and Interventional Radiology;

    Center for Radiology and Endoscopy Department of Diagnostic and Interventional Radiology;

    Center for Cardiology and Cardiovascular Surgery Department of General and Interventional;

    Center for Radiology and Endoscopy Department of Diagnostic and Interventional Radiology;

    Center for Radiology and Endoscopy Department of Diagnostic and Interventional Radiology;

    Center for Radiology and Endoscopy Department of Diagnostic and Interventional Radiology;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 放射医学;
  • 关键词

    Computed tomography; Formula; Pericardial effusion; Volume;

    机译：计算断层扫描;公式;心包积液;体积;

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