Diagnosis of ischemia-causing coronary stenoses by noninvasive fractional flow reserve computed from coronary computed tomographic angiograms. Results from the prospective multi-center DISCOVER-FLOW (Diagnosis of Ischemia-Causing Stenoses Obtained Via Noninvasive Fractional Flow Reserve) study. J Am Coll ...
脉流科技有限公司的AccuFFR ®ct原型软件系统(AccuFFR ®ct, version 1.0)计算每个狭窄处的FFR-CT值,并与有创FFR值进行比较,以FFR≤0.8为具有血流动力学意义的狭窄为参照,通过准确性、敏感性、特异性、阳性预测值(PPV)和阴性预测值 (NPV)以及计算在受试者操作特征(ROC)曲线下的面积(AUC)来评价FFR-CT的...
0626T Intraprocedural coronary fractional flow reserve (FFR) with 3D functional mapping of color-hyphencoded FFR values for the coronary tree, derived from coronary angiogram data, for real-hyphentime review and interpretation of possible atherosclerotic stenosis(es) intervention (List separately in addi...
DEEPVESSEL FFR is a AI-enabled, non-invasive CT fractional flow reserve (FFRCT) analysis. It is an augmentative physiological functional assessment of the coronary arteries using coronary computer tomography angiograms. The software can reduce unnecessary invasive testing, improve patient safety, and lo...
本研究基于CT冠状动脉造影测定狭窄病变内非钙化斑块前后CT值的比值正是借用了FFR的原理,与FFR相比,笔者认为本方法有以下优势:①CCTA是无创性检查,减少了患者的痛苦,降低了医疗风险,不需要额外使用药物[8];②CCTA通过强大的后处理技术能够构建整个冠状动脉系统的3D模型,可同时测量任何一支血管病变,大大节省检查时间[9];...
CT coronary AngiogramCT fractional Flow reserveCoronary artery diseaseClinical outcomesClinical practiceAgeBackground: CT coronary angiography (CTA) with Fractional Flow Reserve as determined by CT (FFRCT) is a safe alternative to invasive coronary angiography. A negative FFRCT has been shown to have ...
B, CT angiogram demonstrating obstructive stenosis of the mid portion of the right coronary artery (RCA) and an FFRCT value of 0.87, indicating no vessel ischemia. Invasive coronary angiogram demonstrates obstructive stenosis of the mid portion of the RCA and a measured FFR value of 0.88, ...
(FFR-CT) is now being use by many larger hospitals to assess patients presenting with chest pain faster than traditional troponin testing,keeping patients overnight for morning nuclear scans or sending them to the Cath lab for invasive angiograms. FFR-CT is also starting to be used at some ...
we computed FFR at any given point along its length as the average pressure in the cross-section of the vessel at the given point divided by the aortic pressure. We observed that the difference in FFR computed using these two methods was vessel-dependent, with the RCA exhibiting substantial ...
CT is not usually associated with use in evaluating patients with non-ST-segment elevation myocardial infarction, but two studies from the past year, CARMENTA and VERDICT, looked at this. Both found CTA can help determine if if a patient should be sent for a diagnostic angiogram, or if a ...