OFR：Optical Flow Ratio，是基于OCT影像和QFR算法的快速FFR系统，无需压力导丝和腺苷，在获取OCT影像后可在1分钟内完成OFR的快速计算。一次回撤成像即可同时获得冠脉斑块形态学和冠状动脉功能学精准评价，对病变进行更为客观和全面的诊断与评价。

QFR、OFR技术发明人、上海交通大学涂圣贤教授接受EuroPCR官方采访

OFR参考文献：

1. Yu W, et al. Diagnostic Accuracy of Intracoronary Optical Coherence Tomography-derived Fractional Flow Reserve for Assessment of Coronary Stenosis Severity. EuroIntervention. 2019 Jun 20;15(2):189-197. doi: 10.4244/EIJ-D-19-00182.

2. Tian F, et al. First Presentation of Integration of Intravascular Optical Coherence Tomography and Computational Fractional Flow Reserve. Int J Cardiovasc Imaging 2018. doi.org/10.1007/s10554-018-1491-1

3.Huang J, Emori H, Ding D, Kubo T, Yu W, Huang P, Zhang S, Gutiérrez-Chico JL, Akasaka T, Wijns W, Tu S. Comparison of Diagnostic Performance of Intracoronary Optical Coherence Tomography-based and Angiography-based Fractional Flow Reserve for Evaluation of Coronary Stenosis. EuroIntervention. 2020 Jan 21. pii: EIJ-D-19-01034. doi: 10.4244/EIJ-D-19-01034.

4.Tu S, Westra J, Adjedj J, Ding D, Liang F, Xu B, Holm N. R., Reiber H, Wijins W. Fractional Flow Reserve in clinical practice: from wire-based invasive measurement to image-based computation. European Heart Journal. 2019. Epub Ahead of Print. DOI:10.1093/eurheartj/ehz918.

5.PCR-EAPCI TEXTBOOK: Julien Adjedj, Jelmer Westra, Daixin Ding, Junqing Yang, William Wijns, Shengxian Tu. Computational non-invasive physiological assessment of coronary disease. 2019. VOLUME I, PART II.