在左心室切除痕评估中,最佳值和患者间的变化通过黑血 LGE CMR 来评估黑血 LGE CMR
Geertruida Petronella Bijvoet1, Ben J M Hermans2, Dominik Linz3
1Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands.
JACC. Clinical electrophysiology
|July 13, 2024
概括
暗血后期加多增强心磁共振 (CMR) 可以识别左心房除痕. 建议最佳图像强度比 (IIR) 值为1.09,范围为1.00-1.10,以考虑患者的变化.
科学领域:
- 心血管成像 - 心血管成像
- 心脏电生理学 心脏电生理学
- 医学物理 医学物理
背景情况:
- 与传统的鲜血LGECMR相比,黑血晚期加多增强 (LGE) 心脏磁共振 (CMR) 提供了与双极电压 (BiV) 的更好的相关性,用于定义左心房 (LA) 剥离痕.
- 准确的痕表征对于指导心房动移除策略至关重要.
研究的目的:
- 为了确定最佳的信号强度值,使用黑血LGE CMR来识别LA切除痕.
- 为了评估不同图像强度比 (IIR) 值的诊断性能.
主要方法:
- 图像强度比率 (IIRs) 由54名接受心房移除的患者的手术前黑血LGECMR计算出来.
- 在没有先前切除的患者中,确定了正常的上限.
- 双极电压 (BiV) 与先前经过切除的患者的IIR进行了比较,利用接收器操作特征 (ROC) 分析来找到痕最佳IIR值 (BiV ≤0.15mV).
主要成果:
- 确定最佳的IIR值以确定LA剥离痕为1.09,达到0.73的中位传感度,0.75的特异性和0.71的准确性.
- 1.00和1.10的门分别提供了80%的灵敏度和80%的特异性.
- 在最佳IIR值 (从1.01到1.22) 中观察到显著的患者间变异.
结论:
- 图像强度比 (IIR) 值为1.09,对于使用黑血LGE CMR.使用黑血LGE CMR.识别左心房剥离痕是最佳的.
- 由于患者间的差异很大,建议1.00至1.10的门范围,以防止对切除痕大小的高估或低估.
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