压力T1映射用于检测阻塞性冠状动脉疾病:一个前性的诊断准确性研究
Simran Shergill1, Mohamed Elshibly1, Anju Velvet1
1Department of Cardiovascular Sciences, University of Leicester, the National Institute for Health and Care Research Leicester Biomedical Research Centre and British Heart Foundation Centre of Research Excellence, Glenfield Hospital, Leicester, UK.
概括
腺素-压力T1反应性 (ΔT1) 在检测冠状动脉疾病 (CAD) 时显示出有限的准确性. 压力输液心血管磁共振 (CMR) 提供了优越的诊断性能,用于识别可疑心痛患者的显著CAD.
科学领域:
- 心血管成像 - 心血管成像
- 诊断的准确性 诊断的准确性
- 医疗技术 医疗技术 医学技术
背景情况:
- 压力 perfusion 心血管磁共振 (CMR) 是建立用于诊断冠状动脉疾病 (CAD).
- 基于加多的对比剂在某些患者中限制了CMR的使用.
- 在血管扩张应激期间的无对比T1映射是CAD检测的潜在替代方案.
研究的目的:
- 将腺压力T1反应 (ΔT1) 与压力 perfusion CMR 的诊断准确性进行比较.
- 使用无对比度方法识别出血动力学显著的CAD.
主要方法:
- 115名疑似心痛患者接受了3-特斯拉CMR,包括T1映射 (休息/腺素应激) 和应激/休息输液.
- 通过侵入性冠状动脉血管学定义的显著CAD (分量流量储备≤0.80).
- 通过ROC分析得出的 ΔT1 值;质量评估的压力 perfusion CMR (每容器和每患者).
主要成果:
- ΔT1显示显著的CAD (AUC0.59) 的诊断性能较差.
- 最佳 ΔT1 值 (≤4.36%) 的准确率为 54.9%,灵敏度为 68.3%,特异性为 49.2%.
- 与 ΔT1 相比,压力 perfusion CMR 显示出明显更高的诊断准确性 (p<0.001 对于每容器和每患者的分析).
结论:
- 氨酸压力T1反应性 (ΔT1) 对阻塞性CAD检测的诊断准确性有限.
- 压力输液CMR在怀疑心痛时诊断显著的CAD更准确.
- 需要进一步研究可靠的无对比度CAD检测方法.
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