摘要
AIM:To analyze differences in ultra-widefield fluorescein angiography(UWFA)findings between dynamic and static images of eyes with diabetic retinopathy(DR).METHODS:This cross-sectional study included 28 eyes of 28 patients with DR undergoing UWFA.A series of UWFA images acquired from each patient were converted into a time-lapse video and used as a dynamic image.A single,clear,arteriovenous phase image was chosen as a static image.Non-perfusion index(NPI)and its correlation with vascular abnormalities in different zones were compared between dynamic and static UWFA imaging.RESULTS:NPI appeared to increase from the center to the far-periphery in both groups.Dynamic NPI was lower in the total retinal area(0.26 vs 0.29,P=0.009)and farperiphery(0.33 vs 0.36,adjusted P=0.042),which was contrary to the static NPI.Far-peripheral NPI was associated with intraretinal microvascular abnormality in the posterior area in both groups.CONCLUSION:Time-lapse dynamic UWFA imaging is a useful modality to differentially diagnose hypofluorescence in the most peripheral region.This modality could provide a reliable method for NPI measurement.
基金
Supported by National Natural Science Foundation of China(No.81570851)
Project of Shanghai Medical Key Specialty Construction(No.ZK2019B27)
National Project of Shanghai Municipal Commission of Health and Family Planning(No.201740001)
Project of Shanghai Jingan District Municipal Commission of Health and Family Planning(No.2018MS12)
Advanced and Appropriate Technology Promotion Project of Shanghai Health Commission(No.2019SY012)
Shanghai Jiao Tong University Translation Medicine Cross Research Fund Project(No.YG2019QNA61)。
