Repeatability Using Automatic Tracing with Canon OCT- HS100 and Zeiss Cirrus HD-OCT 5000

Brautaset, Rune; Birkeldh, Ulrika; Alstig, Petra Frehr; Wikén, Petra; Nilsson, Maria

doi:10.1371/journal.pone.0149138

Cited by 10 publications

(10 citation statements)

References 27 publications

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“…The A-scan rate in this device is 70,000 scans per second, while the scanning width is between 2 and 10 mm and the wavelength used is 855 nm. The axial resolution claimed is 3 μm with a scanning depth of 2 mm [ 12 ]. The OCT angiogram area selected for this study was 3 x 3 mm.…”

Section: Methodsmentioning

confidence: 99%

Repeatability, reproducibility and agreement of foveal avascular zone measurements using three different optical coherence tomography angiography devices

Mihailovic¹,

Brand²,

Lahme³

et al. 2018

PLoS ONE

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PurposeTo evaluate the repeatability, the reproducibility and the agreement of foveal avascular zone (FAZ) measurements using three different optical coherence tomography angiography (OCT-A) devices.ProceduresThis prospective study included 24 eyes of 24 healthy volunteers. OCT-A imaging was performed using RTVue XR Avanti, Canon OCT-HS100 and Spectralis OCT-A. Repeated measurements were performed under the same conditions on two separate days, and the area of the FAZ was determined and analyzed using the above devices.ResultsAll three devices showed a high ICC and there was no significant difference between the ICCs (pairwise comparison) of the three devices (Optovue–Canon (p = 0.66); Canon–Heidelberg (p = 0.21); Heidelberg–Optovue (p = 0.37). Agreement analysis of the three devices revealed a significant elevation of FAZ area values with the Heidelberg device and a slight underestimation of the FAZ area with the Canon device. Nevertheless, overall we found a high level of agreement between all of the three devices (ICC ≥ 0.958 (0.905–0.982)).ConclusionsGood reproducibility and repeatability were observed for all three devices. However, the agreement analysis revealed slight, but significant differences, which might limit alternating use of these devices for clinical research and follow-up examinations.

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Section: Methodsmentioning

confidence: 99%

Repeatability, reproducibility and agreement of foveal avascular zone measurements using three different optical coherence tomography angiography devices

Mihailovic¹,

Brand²,

Lahme³

et al. 2018

PLoS ONE

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“…In the present study, we used Zeiss Cirrus HD-OCT 5000. Brautaset et al [ 21 ] reported that the repeatability of this device is high in both macula and optic disc measurements because of its automatic tracking function. According to us, one of the major strengths of the present study was the demonstration of higher binocular RNFL thickness asymmetry in diabetic eyes compared to healthy eyes, which might indicate early inner retinal neurodegenerative process in DM without retinopathy.…”

Section: Discussionmentioning

confidence: 99%

Assessment of optic disc and ganglion cell layer in diabetes mellitus type 2

et al. 2017

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The purpose of this study was to compare the optic disc parameters, retinal nerve fiber (RNFL), and macular ganglion cell layers between patients with diabetes mellitus (DM) type 2 and healthy controls.In this cross-sectional study, 69 eyes of 69 diabetic patients without diabetic retinopathy and 47 eyes of 47 healthy controls were included. Optic disc parameters (i.e., rim area, disc area, cup to disc ratio, cup volume), RNFL, and macular ganglion cell-inner plexiform layers (GCL + IPL) thickness were measured by means of spectral domain optical coherence tomography.There were not statistically significant differences between the diabetic patients and healthy controls in terms of RNFL thickness (P = .32), rim area (P = .20), disc area (P = .16), cup volume (P = .12), and average macular GCL + IPL thickness (P = .11). Nevertheless, binocular RNFL thickness symmetry percentage (P =.03), average cup to disc ratio (P = .02), and superior-nasal macular GCL + IPL thickness (P = .04) were statistically significantly different in the diabetic and control groups.Diabetic patients without retinopathy have more binocular RNFL thickness asymmetry, higher cup to disc ratio, and thinner sectoral macular GCL + IPL when compared to healthy controls. Our results may support the statement that DM causes inner retinal neurodegenerative changes.

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“…A number of modern commercial devices include additional hardware for correcting movement, such as retinal trackers [35], although the measurements generated by these instruments are not interchangeable [36]. A few examples are: Spectralis OCT (Heidelberg Engineering, Heidelberg, Germany), which uses auxiliary Scanning Laser Ophthalmoscopy (SLO) images; RTVue (Optovue Inc., Fremont, CA, USA), which uses a full-field fundus image; or tracking OCT from Physical Sciences Inc. (PSI, Andover, MA, USA), which uses a separate tracking beam for observing motion related reflectance changes of the retina [37].…”

Section: Prospective Approachesmentioning

confidence: 99%

Review on Retrospective Procedures to Correct Retinal Motion Artefacts in OCT Imaging

et al. 2019

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Motion artefacts from involuntary changes in eye fixation remain a major imaging issue in optical coherence tomography (OCT). This paper reviews the state-of-the-art of retrospective procedures to correct retinal motion and axial eye motion artefacts in OCT imaging. Following an overview of motion induced artefacts and correction strategies, a chronological survey of retrospective approaches since the introduction of OCT until the current days is presented. Pre-processing, registration, and validation techniques are described. The review finishes by discussing the limitations of the current techniques and the challenges to be tackled in future developments.

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Repeatability Using Automatic Tracing with Canon OCT- HS100 and Zeiss Cirrus HD-OCT 5000

Cited by 10 publications

References 27 publications

Repeatability, reproducibility and agreement of foveal avascular zone measurements using three different optical coherence tomography angiography devices

Repeatability, reproducibility and agreement of foveal avascular zone measurements using three different optical coherence tomography angiography devices

Assessment of optic disc and ganglion cell layer in diabetes mellitus type 2

Review on Retrospective Procedures to Correct Retinal Motion Artefacts in OCT Imaging

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