一个数学模型,用于量化二手腹. 在狗模型中使用对比心电回声学进行实验验证
J M Dent1, A R Jayaweera, W P Glasheen
1Department of Medicine, University of Virginia School of Medicine, Charlottesville.
Circulation
|August 1, 1992
概括
一个新的数学模型使用对比心声回声学准确量化了二手腹 (MR) 的严重程度. 该模型分析左心室和左心室的对比冲洗,为MR评估提供了一个实用的工具.
科学领域:
- 心血管成像 - 心血管成像
- 医疗器械开发 医疗器械开发
- 定量分析是一种量化分析.
背景情况:
- 对患者管理而言,对对位膜反 (MR) 严重程度的评估至关重要.
- 目前的MR量化方法存在局限性.
- 左心房 (LA) 和左心室 (LV) 的对比度清除受MR严重程度的影响.
研究的目的:
- 开发和验证一种数学模型,用于对MR的定量估计.
- 在MR评估中使用对比心电回声学.
- 为了将模型衍生的MR量化与既定方法相关联.
主要方法:
- 基于LA和LV之间的对比清除动态,开发了一个数学模型.
- 在狗身上进行了实验,使用了对比心声谱.
- 诱导和视觉分级的MR,视频强度数据被输入模型.
主要成果:
- 该模型与视觉MR评估有很好的相关性 (r = 0.97).
- 使用电磁流探针进行的进一步验证显示,与模型衍生的反分数 (r = 0.96) 有很好的相关性.
- 达成了高度的观察者间和观察者内部协议.
结论:
- 一个数学模型使用LA相对于LV的对比度清除来准确量化MR严重程度.
- 该模型为MR量化提供了一种实用且准确的方法.
- 这些发现对临床实践在评估MR严重程度方面有重大影响.
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