A quantitative comparison of five optical coherence tomography angiography systems in clinical performance

• Main Authors: Xin-Xin Li, Wei Wu, Hao Zhou, Jun-Jie Deng, Meng-Ya Zhao, Tian-Wei Qian, Chen Yan, Xun Xu, Su-Qin Yu1
• Format: Article
• Language: English
• Published: Press of International Journal of Ophthalmology (IJO PRESS) 2018-11-01
• Series: International Journal of Ophthalmology
• Subjects: optical coherence tomography angiography; devices; vessel valid visibility; motion artifacts; acquisition time
• Online Access: http://www.ijo.cn/en_publish/2018/11/20181109.pdf
• ISSN: 2222-3959; 2227-4898

AIM: To compare the clinical performance of 4 spectral-domain (SD) optical coherence tomography angiography (OCTA) systems: AngioVueTM, AngioPlexTM, Spectralis® OCTA, AngioScan, and 1 swept-source (SS) OCTA SS OCT AngioTM. METHODS: Twenty-seven undilated right eyes of 27 participants underwent OCTA examination using five different systems respectively for both 3×3 and 6×6 mm2 scan pattern (Spectralis OCTA for 3×3 mm2 scan only). Image quality, including vessel valid visibility and the number of motion artifacts, and acquisition time were evaluated. Repeated measures analysis of variance (ANOVA) with Bonferroni's post-test and Friedman test with Dunn's post-test were used to compare measurements. RESULTS: The age of the subjects was 28.19±5.55y (range, 23-49y). The spherical equivalent refraction was -2.55±1.84 D (range, 0.00 to -5.25 D). Significant difference was observed in the evaluation of vessel valid visibility (AngioVue the highest: 0.111±0.031 for 3×3 mm2 scan and 0.128±0.020 for 6×6 mm2 scan), number of motion artifacts (AngioVue the fewest: 0.778±1.086 for 3×3 mm2 scan and 0.333±0.620 for 6×6 mm2 scan) and acquisition time (AngioPlex the shortest: 8.537±1.921s for 3×3 mm2 scan and 8.298±1.741s for 6×6 mm2 scan; all P<0.001). CONCLUSION: There is poor agreement of measurements among systems. AngioVue provides images with the highest vessel valid visibility and the fewest motion artifacts. AngioPlex achieves the shortest acquisition.