Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images

Yan Li, Raj Shekhar, David Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

Optical coherence tomography (OCT) provides a non-contact and non-invasive means to visualize the corneal anatomy at micron scale resolution. We obtained corneal images from an arc-scanning (converging) OCT system operating at a wavelength of 830 nm and a fan-shaped-scanning high-speed OCT system with an operating wavelength of 1310 nm. Different scan protocols (arc/fan) and data acquisition rates, as well as wavelength dependent bio-tissue backscatter contrast and optical absorption, make the images acquired using the two systems different. We developed image-processing algorithms to automatically detect the air-tear interface, epithelium-Bowman's layer interface, laser in-situ keratomileusis (LASIK) flap interface, and the cornea-aqueous interface in both kinds of images. The overall segmentation scheme for 830 nm and 1310 nm OCT images was similar, although different strategies were adopted for specific processing approaches. Ultrasound pachymetry measurements of the corneal thickness and Placido-ring based corneal topography measurements of the corneal curvature were made on the same day as the OCT examination. Anterior/posterior corneal surface curvature measurement with OCT was also investigated. Results showed that automated segmentation of OCT images could evaluate anatomic outcome of LASIK surgery.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsM. Sonka, J. Michael Fitzpatrick
Pages167-178
Number of pages12
Volume4684 I
DOIs
StatePublished - 2002
EventMedical Imaging 2002: Image Processing - San Diego, CA, United States
Duration: Feb 24 2002Feb 28 2002

Other

OtherMedical Imaging 2002: Image Processing
CountryUnited States
CitySan Diego, CA
Period2/24/022/28/02

Fingerprint

Optical tomography
tomography
Lasers
lasers
fans
Wavelength
Fans
arcs
curvature
wavelengths
Scanning
scanning
cornea
epithelium
anatomy
Surface measurement
surgery
Light absorption
Surgery
Topography

Keywords

  • Active contour model
  • Deconvolution
  • Image segmentation
  • Morphological operation
  • Optical coherence tomography
  • Speckle suppression

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Li, Y., Shekhar, R., & Huang, D. (2002). Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images. In M. Sonka, & J. Michael Fitzpatrick (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4684 I, pp. 167-178) https://doi.org/10.1117/12.467123

Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images. / Li, Yan; Shekhar, Raj; Huang, David.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / M. Sonka; J. Michael Fitzpatrick. Vol. 4684 I 2002. p. 167-178.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Li, Y, Shekhar, R & Huang, D 2002, Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images. in M Sonka & J Michael Fitzpatrick (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4684 I, pp. 167-178, Medical Imaging 2002: Image Processing, San Diego, CA, United States, 2/24/02. https://doi.org/10.1117/12.467123
Li Y, Shekhar R, Huang D. Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images. In Sonka M, Michael Fitzpatrick J, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4684 I. 2002. p. 167-178 https://doi.org/10.1117/12.467123
Li, Yan ; Shekhar, Raj ; Huang, David. / Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images. Proceedings of SPIE - The International Society for Optical Engineering. editor / M. Sonka ; J. Michael Fitzpatrick. Vol. 4684 I 2002. pp. 167-178
@inproceedings{2e5a2b66319b43338cbe4bbd070ef8c2,
title = "Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images",
abstract = "Optical coherence tomography (OCT) provides a non-contact and non-invasive means to visualize the corneal anatomy at micron scale resolution. We obtained corneal images from an arc-scanning (converging) OCT system operating at a wavelength of 830 nm and a fan-shaped-scanning high-speed OCT system with an operating wavelength of 1310 nm. Different scan protocols (arc/fan) and data acquisition rates, as well as wavelength dependent bio-tissue backscatter contrast and optical absorption, make the images acquired using the two systems different. We developed image-processing algorithms to automatically detect the air-tear interface, epithelium-Bowman's layer interface, laser in-situ keratomileusis (LASIK) flap interface, and the cornea-aqueous interface in both kinds of images. The overall segmentation scheme for 830 nm and 1310 nm OCT images was similar, although different strategies were adopted for specific processing approaches. Ultrasound pachymetry measurements of the corneal thickness and Placido-ring based corneal topography measurements of the corneal curvature were made on the same day as the OCT examination. Anterior/posterior corneal surface curvature measurement with OCT was also investigated. Results showed that automated segmentation of OCT images could evaluate anatomic outcome of LASIK surgery.",
keywords = "Active contour model, Deconvolution, Image segmentation, Morphological operation, Optical coherence tomography, Speckle suppression",
author = "Yan Li and Raj Shekhar and David Huang",
year = "2002",
doi = "10.1117/12.467123",
language = "English (US)",
volume = "4684 I",
pages = "167--178",
editor = "M. Sonka and {Michael Fitzpatrick}, J.",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Segmentation of 830 nm and 1310 nm LASIK corneal optical coherence tomography images

AU - Li, Yan

AU - Shekhar, Raj

AU - Huang, David

PY - 2002

Y1 - 2002

N2 - Optical coherence tomography (OCT) provides a non-contact and non-invasive means to visualize the corneal anatomy at micron scale resolution. We obtained corneal images from an arc-scanning (converging) OCT system operating at a wavelength of 830 nm and a fan-shaped-scanning high-speed OCT system with an operating wavelength of 1310 nm. Different scan protocols (arc/fan) and data acquisition rates, as well as wavelength dependent bio-tissue backscatter contrast and optical absorption, make the images acquired using the two systems different. We developed image-processing algorithms to automatically detect the air-tear interface, epithelium-Bowman's layer interface, laser in-situ keratomileusis (LASIK) flap interface, and the cornea-aqueous interface in both kinds of images. The overall segmentation scheme for 830 nm and 1310 nm OCT images was similar, although different strategies were adopted for specific processing approaches. Ultrasound pachymetry measurements of the corneal thickness and Placido-ring based corneal topography measurements of the corneal curvature were made on the same day as the OCT examination. Anterior/posterior corneal surface curvature measurement with OCT was also investigated. Results showed that automated segmentation of OCT images could evaluate anatomic outcome of LASIK surgery.

AB - Optical coherence tomography (OCT) provides a non-contact and non-invasive means to visualize the corneal anatomy at micron scale resolution. We obtained corneal images from an arc-scanning (converging) OCT system operating at a wavelength of 830 nm and a fan-shaped-scanning high-speed OCT system with an operating wavelength of 1310 nm. Different scan protocols (arc/fan) and data acquisition rates, as well as wavelength dependent bio-tissue backscatter contrast and optical absorption, make the images acquired using the two systems different. We developed image-processing algorithms to automatically detect the air-tear interface, epithelium-Bowman's layer interface, laser in-situ keratomileusis (LASIK) flap interface, and the cornea-aqueous interface in both kinds of images. The overall segmentation scheme for 830 nm and 1310 nm OCT images was similar, although different strategies were adopted for specific processing approaches. Ultrasound pachymetry measurements of the corneal thickness and Placido-ring based corneal topography measurements of the corneal curvature were made on the same day as the OCT examination. Anterior/posterior corneal surface curvature measurement with OCT was also investigated. Results showed that automated segmentation of OCT images could evaluate anatomic outcome of LASIK surgery.

KW - Active contour model

KW - Deconvolution

KW - Image segmentation

KW - Morphological operation

KW - Optical coherence tomography

KW - Speckle suppression

UR - http://www.scopus.com/inward/record.url?scp=0036035475&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036035475&partnerID=8YFLogxK

U2 - 10.1117/12.467123

DO - 10.1117/12.467123

M3 - Conference contribution

AN - SCOPUS:0036035475

VL - 4684 I

SP - 167

EP - 178

BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Sonka, M.

A2 - Michael Fitzpatrick, J.

ER -