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Praveen J. Patel, Dimitris Koufakis, Fred K. Chen, Lyndon Da Cruz, Adnan Tufail; Prevalence of Motion Artefact in Topcon 3DOCT-1000 Spectral-domain Optical Coherence Tomography Imaging in Macular Disease. Invest. Ophthalmol. Vis. Sci. 2011;52(14):4044.
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© ARVO (1962-2015); The Authors (2016-present)
Advances in technology have led to the development of ultra-high speed optical coherence tomography technology. Although not commercially available yet, one of the main reasons to introduce this technology is the perceived high rate of motion artefact with conventional spectral-domain optical coherence tomography (SDOCT) imaging. However, there has been relatively little work estimating the prevalence of motion artefact in SDOCT images in patients with macular disease. The aim of this study was to investigate the prevalence of motion artefact in Topcon 3DOCT-1000 OCT® SDOCT images in patients with macular disease.
Retrospective analysis of SDOCT images from 102 eyes of 102 consecutive patients attending for assessment of macular disease. The scanning protocol used was a 6 x 6 mm raster scan of 512 A scans x 128 B scans. An experienced retinal specialist reviewed all line scans and the reconstructed shadowgram for presence of vertical and horizontal motion artefact.
The mean (SD) age of patients was 60 (17) years with a range of 19-89 years. There were 58 right eyes and 54 females. The most common retina diagnoses were age-related macular degeneration (20 patients) and diabetic retinopathy (21 patients). Motion artefact was present in SDOCT images of 38 patients (37%).
Motion artefact in SDOCT imaging without eye tracking is a commonly encountered problem. This undermines the accuracy and precision of retinal thickness measurements in these patients. The results of this study underscores the need for ultra-high speed OCT technology or robust eye tracking solutions to overcome this problem.
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