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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 1, Iss. 5 — Dec. 1, 2010
  • pp: 1358–1383

Retinal Nerve Fiber Layer Segmentation on FD-OCT Scans of Normal Subjects and Glaucoma Patients

Markus A. Mayer, Joachim Hornegger, Christian Y. Mardin, and Ralf P. Tornow  »View Author Affiliations


Biomedical Optics Express, Vol. 1, Issue 5, pp. 1358-1383 (2010)
http://dx.doi.org/10.1364/BOE.1.001358


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Abstract

Automated measurements of the retinal nerve fiber layer thickness on circular OCT B-Scans provide physicians additional parameters for glaucoma diagnosis. We propose a novel retinal nerve fiber layer segmentation algorithm for frequency domain data that can be applied on scans from both normal healthy subjects, as well as glaucoma patients, using the same set of parameters. In addition, the algorithm remains almost unaffected by image quality. The main part of the segmentation process is based on the minimization of an energy function consisting of gradient and local smoothing terms. A quantitative evaluation comparing the automated segmentation results to manually corrected segmentations from three reviewers is performed. A total of 72 scans from glaucoma patients and 132 scans from normal subjects, all from different persons, composed the database for the evaluation of the segmentation algorithm. A mean absolute error per A-Scan of 2.9 µm was achieved on glaucomatous eyes, and 3.6 µm on healthy eyes. The mean absolute segmentation error over all A-Scans lies below 10 µm on 95.1% of the images. Thus our approach provides a reliable tool for extracting diagnostic relevant parameters from OCT B-Scans for glaucoma diagnosis.

© 2010 OSA

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography

ToC Category:
Ophthalmology Applications

History
Original Manuscript: October 12, 2010
Revised Manuscript: October 29, 2010
Manuscript Accepted: November 3, 2010
Published: November 8, 2010

Citation
Markus A. Mayer, Joachim Hornegger, Christian Y. Mardin, and Ralf P. Tornow, "Retinal Nerve Fiber Layer Segmentation on FD-OCT Scans of Normal Subjects and Glaucoma Patients," Biomed. Opt. Express 1, 1358-1383 (2010)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-1-5-1358


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