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Improved Repeatability of Retinal Thickness Measurements Using Line-Scan Ophthalmoscope Image-Based Retinal Tracking
- Source :
- Ophthalmic Surgery, Lasers and Imaging Retina. 46:310-314
- Publication Year :
- 2015
- Publisher :
- SLACK, Inc., 2015.
-
Abstract
- BACKGROUND AND OBJECTIVE: To assess repeatability and speed of a line-scan ophthalmoscope (LSO) image-based tracking system and compare to the point-scanning approach. PATIENTS AND METHODS: Thirty-five eyes with retinal diseases underwent volume scans using two spectral-domain optical coherence tomography (OCT) devices: a line-scan tracking Cirrus HD-OCT (Carl Zeiss Meditec; Dublin, CA) and point-scan tracking Spectralis HRA+OCT (Heidelberg Engineering, Heidelberg, Germany). Eyes were also imaged on the Cirrus HD-OCT with tracking disabled. RESULTS: Mean difference in central subfield thickness (CST) between consecutive scans was 2.6 µm for the Cirrus without tracking, 1.7 µm with tracking, and 3.6 µm for the Spectralis. The repeatability standard deviation was 3.0 µm for the Cirrus without tracking, 1.5 µm with tracking, and 4.0 µm for the Spectralis. Coefficient of variation for the CST was 1.1% for the Cirrus without tracking, 0.5% with tracking, and 1.4% for the Spectralis. Mean scan acquisition time was 12.3 ± 6.2 seconds for the Spectralis, 7.8 ± 6.7 for the Cirrus with tracking, and 4.3 ± 0.6 for the Cirrus without tracking. CONCLUSION: Real-time LSO image-based retinal tracking appears to improve repeatability of OCT retinal thickness measurements. [ Ophthalmic Surg Lasers Imaging Retina . 2015;46:310–314.]
- Subjects :
- Adult
Male
Adolescent
genetic structures
Visual Acuity
Tracking (particle physics)
Retina
chemistry.chemical_compound
Retinal Diseases
Optical coherence tomography
medicine
Humans
Prospective Studies
Aged
Aged, 80 and over
medicine.diagnostic_test
business.industry
Ophthalmoscopes
Reproducibility of Results
Retinal
Tracking system
Organ Size
Repeatability
Middle Aged
eye diseases
chemistry
Female
Cirrus
sense organs
business
Line scan
Tomography, Optical Coherence
Image based
Biomedical engineering
Subjects
Details
- ISSN :
- 23258179 and 23258160
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- Ophthalmic Surgery, Lasers and Imaging Retina
- Accession number :
- edsair.doi.dedup.....ca882d9425b1fc3dc6cc292b5a6c97f7
- Full Text :
- https://doi.org/10.3928/23258160-20150323-02