从平衡心脏血池评估的左心室跳动到跳动的表现,使用计算机核探测器使用计算机核探测器进行评估
Circulation
|January 1, 1981
概括
一个新的计算机化非成像闪探测器准确而可靠地测量了连续的节拍对节拍左心室喷射率. 这种便携式设备提供了一种可行的实时心脏性能评估方法,没有心电图门.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 生物医学工程 生物医学工程
背景情况:
- 持续对左心室 (LV) 性能进行节拍评估对于理解心脏病理生理学至关重要.
- 现有的方法在实时数据采集方面可能是有限的,或者需要心电图门.
研究的目的:
- 评估一种新型计算机化非成像闪光探针的可行性,准确性和可重复性,用于持续的节拍对节拍LV射出分数 (LVEF) 评估.
- 为了确定探头是否可以在没有心电图门的情况下生成实时LV体积曲线.
主要方法:
- 在71名患者中使用了便携式,非成像的闪探针来评估LV性能.
- 计算机算法和操作员例程为LV和背景感兴趣区域标准化了探头定位.
- 从探头数据计算出节拍对节拍的LVEF,并与使用多晶体闪相机进行的第一通研究进行比较.
主要成果:
- 探测器证明了高相关性 (r = 0.92) 与第一通过研究在广泛的LVEF值 (15-81%).
- 在初始和重复分析 (r = 0.97) 和研究 (r = 0.94) 之间发现了良好的一致性.
- beat-to-beat LVEF测量的绝对可变性为 +/- 5.9% (± 2 SD). 没有任何变化.
结论:
- 计算机化非成像闪探测器是一种可行的,准确的,可重复的工具,用于连续的节奏到节奏的LVEF监测.
- 这种技术为调查需要节拍心脏数据的病理生理学条件提供了可靠的方法.
- 便携性和不需要心电图门的特性增强了其临床实用性.
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