Journal: Translational Vision Science & Technology
Article Title: Optical Coherence Tomography Angiography Projection Artifact Removal: Impact on Capillary Density and Interaction with Diabetic Retinopathy Severity
doi: 10.1167/tvst.9.7.10
Figure Lengend Snippet: Identifying differences in the deep capillary plexus (DCP) between projection artifact removal (PAROCTA) and non-PAROCTA processed eyes. ( A, B ) Binarized images of the DCP using PAROCTA and non-PAROCTA versions of the software. ( C ) Pixels exclusive to PAROCTA obtained by subtracting the non-PAROCTA image from the PAROCTA image. ( D ) Pixels exclusive to non-PAROCTA obtained by subtracting the PAROCTA image from the non-PAROCTA image. ( E , F ) Pixels unique to each version of the software (green) overlaid on the superficial capillary plexus (SCP) (Red) with common pixels shown in yellow, demonstrating that differences unique to non-PAROCTA are mainly projection artifacts from the SCP while those exclusive from PAROCTA originate from the DCP. ( G ) Pixels unique to PAROCTA (green) when overlaid on the non-PAROCTA DCP (red) demonstrate “recovery” of finer capillaries not previously visualized on non-PAROCTA.
Article Snippet: Several strategies have been implemented to reduce the effects of projection artifacts, which range from slab removal to projection resolved OCTA (PR-OCTA)., Recently, Garrity et al. described the use of a novel 3-D projection artifact removal software (PAROCTA) currently available as part of the AngioVue software (RTvue XR Avanti; Optovue, Fremont, CA).
Techniques: Software