在内动脉狭窄中CT衍生的分流储量:基于计算流体动力学的试点研究
Zhuhao Yin1, Changsheng Zhou2, Jian Guo3
1Department of Radiology, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu 210002, China.
European journal of radiology
|January 5, 2024
概括
大脑CT衍生的分量流量储备 (CT-FFR) 测量1厘米远距离狭窄,显示在评估内动脉狭窄 (ICAS) 中的高准确性. 这种非侵入性方法为评估ICAS患者的功能意义提供了一个有希望的工具.
科学领域:
- 神经成像是一种神经成像.
- 心血管成像 - 心血管成像
- 医学诊断 医学诊断 医学诊断
背景情况:
- 在冠状动脉评估中建立了CT-derived fractional flow reserve (CT-FFR) 的部分流量储备.
- 它的可行性和标准化对于内动脉狭窄症 (ICAS) 需要定义.
研究的目的:
- 确定CT-FFR在ICAS中的功能评估的可行性.
- 为了确定最佳的CT-FFR测量地点,使用侵入性FFR作为黄金标准.
主要方法:
- 19名中度至重度ICAS患者接受了侵入性FFR测量和头部CT血管造影.
- CT-FFR测量是在狭窄 (D0) 的末端,距离1厘米 (D1) 和距离2厘米 (D2).
- 通过使用接收器运行特征曲线来评估诊断性能.
主要成果:
- CT-FFR测量结果显示了观测者内部和观测者间的良好一致性.
- CT-FFR测量距离狭窄的1厘米 (CT-FFRD1) 显示出血液动力学显著狭窄的完美预测 (AUC 1.000).
- CT-FFRD1实现了高灵敏度 (0.94) 和特异性 (1.00) 来检测FFR≤0.80,具有强烈的相关性 (r=0.915) 和与侵入性FFR的一致性.
结论:
- 大脑CT-FFR测量在狭窄的1厘米远处提供了与侵入性FFR相似的结果.
- 这种技术显示出临床应用的潜力,用于评估ICAS的功能意义.
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