FFRCT采用常规CT冠脉造影图像(CTA),采用一定算法,从图像中一方面提取血管的解剖学形态信息,另一方面提取血管的生理学信息,将两方面信息相结合,可以建立起血管的流体动力学模型,从而能够在任意的冠脉上的任意位置计算FFR。 图片来源https://www.heartflow.com/heartflow-ffrct-analysis/ 大家如果有兴趣,可以点击下面的网页...
FFRCT采用常规CT冠脉造影图像(CTA),采用一定算法,从图像中一方面提取血管的解剖学形态信息,另一方面提取血管的生理学信息,将两方面信息相结合,可以建立起血管的流体动力学模型,从而能够在任意的冠脉上的任意位置计算FFR。 图片来源https://www.heartflow.com/heartflow-ffrct-analysis/ 大家如果有兴趣,可以点击下面的网页...
【2】Diagnostic accuracy of fractional flow reserve from anatomic CT angiography. 【3】Diagnostic performance of noninvasive fractional flow reserve derived from coronary computed tomography angiography in suspected coronary artery disease: the NXT trial (Analysis of Coronary Blood Flow Using CT Angiography...
【2】Diagnostic accuracy of fractional flow reserve from anatomic CT angiography. 【3】Diagnostic performance of noninvasive fractional flow reserve derived from coronary computed tomography angiography in suspected coronary artery disease: the NXT trial (Analysis of Coronary Blood Flow Using CT Angiography...
用腺苷等血管扩張药物的情况下,基于常规使用的压力导丝技术,并且用了一种特别的波型幅度计算法(W ave Intensity Analysis),去计算冠脉内压力的比率;在无波型期间(Wave-free period)测量到的瞬间狭窄病变远端冠脉内压力和狭窄病变近端冠脉内压力之比,也就是被定义为瞬时无波型比率(iFR)。iFR = Pd Wave-free peri...
【3】Diagnostic performance of noninvasive fractional flow reserve derived from coronary computed tomography angiography in suspected coronary artery disease: the NXT trial (Analysis of Coronary Blood Flow Using CT Angiography: Next Steps) 表. DISCOVER-FLOW、DeFACTO、NXT临床试验数据对比[3] ...
calculated with FFR as golden standard. Diagnostic efficiency for coronary artery ischemia by CCTA stenosis and FFR ct were compared using receiver operating characteristic (ROC) curve, Bland-Altman analysis and Spearman analysis. Results All of 27 vessels from 18 patients were eligible for analysis ...
This manuscriptreviews the technique of CTFFR and discusses some of the challenges of widespread clinical implementation through value chain analysis." As the leading cause of death amongst men and women throughout the developed world, coronary heart disease is an important and expensive health ...
controlled trial (RCT) is required. We will conduct an RCT to investigate the impact of adding FFRct analysis in the diagnostic pathway of patients with a coronary stenosis on CCTA on the rate of unnecessary invasive co...
The review article pays particular attention to the importance of patient preparation, anatomical features, scan quality and the overall interpretation of results that can lead to the best use of FFRCT analysis. Previous cost evaluations of the technology are compared and reviewed. Recent Findings ...