Full thickness PAROCTA and non-PAROCTA VD and VLD differed only in eyes with no DR where PAROCTA estimates were higher (VD: P = 0.009 VLD: P = 0.02). DCP VD and VLD were higher with PAROCTA as compared to non-PAROCTA only in eyes with no DR (VD and VLD: P < 0.001), mild (VD and VLD: P < 0.001), moderate (VD: P = 0.005 and VLD: P < 0.001), and severe (VD: P = 0.009 VLD: P < 0.001). Adjusted flow index (AFI) was manually assessed for full thickness images.Īmong 323 eyes of 194 patients (no diabetic retinopathy : 28 eyes mild nonproliferative DR (NPDR): 96 eyes moderate: 82 eyes severe: 32 eyes and proliferative DR : 81 eyes), SCP VD and VLD were lower with PAROCTA than with non-PAROCTA only in eyes with moderate (VD: P = 0.017 VLD: P = 0.046), severe ( P = 0.016 P = 0.009), and PDR ( P < 0.001 P = 0.002). SCP, DCP, and full thickness retina vascular density (VD) and vessel linear density (VLD) were manually calculated using ImageJ (version 1.51). We acquired 3 × 3 mm scans with RTVue-XR Avanti (Optovue, Inc., Fremont, CA), which were analyzed with PAR software (PAROCTA) and without (non-PAROCTA). ![]() The purpose of this study was to assess how projection artifact removal (PAR) alters optical coherence tomography angiography (OCTA) assessment of superficial capillary plexus (SCP) and deep capillary plexus (DCP) in eyes of patients with diabetes.
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