3D mapping of choroidal thickness from OCT B-scans

dc.contributor.author Simão Pedro Faria en
dc.contributor.author Penas,S en
dc.contributor.author Mendonça,L en
dc.contributor.author Silva,JA en
dc.contributor.author Ana Maria Mendonça en
dc.date.accessioned 2018-01-14T15:53:58Z
dc.date.available 2018-01-14T15:53:58Z
dc.date.issued 2018 en
dc.description.abstract The choroid is the middle layer of the eye globe located between the retina and the sclera. It is proven that choroidal thickness is a sign of multiple eye diseases. Optical Coherence Tomography (OCT) is an imaging technique that allows the visualization of tomographic images of near surface tissues like those in the eye globe. The automatic calculation of the choroidal thickness reduces the subjectivity of manual image analysis as well as the time of large scale measurements. In this paper, a method for the automatic estimation of the choroidal thickness from OCT images is presented. The pre-processing of the images is focused on noise reduction, shadow removal and contrast adjustment. The inner and outer boundaries of the choroid are delineated sequentially, resorting to a minimum path algorithm supported by new dedicated cost matrices. The choroidal thickness is given by the distance between the two boundaries. The data are then interpolated and mapped to an infrared image of the eye fundus. The method was evaluated by calculating the error as the distance from the automatically estimated boundaries to the boundaries delineated by an ophthalmologist. The error of the automatic segmentation was low and comparable to the differences between manual segmentations from different ophthalmologists. © 2018, Springer International Publishing AG. en
dc.identifier.uri http://repositorio.inesctec.pt/handle/123456789/6058
dc.identifier.uri http://dx.doi.org/10.1007/978-3-319-68195-5_91 en
dc.language eng en
dc.relation 6649 en
dc.relation 6381 en
dc.rights info:eu-repo/semantics/embargoedAccess en
dc.title 3D mapping of choroidal thickness from OCT B-scans en
dc.type article en
dc.type Publication en
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