Prospective Comparison of Cirrus and Stratus Optical Coherence Tomography for Quantifying Retinal Thickness

Kiernan, Daniel F.; Hariprasad, Seenu M.; Chin, Eric K.; Kiernan, Claire L.; Rago, J. A.; Mieler, William F.

doi:10.1016/j.ajo.2008.08.018

Cited by 96 publications

(47 citation statements)

References 34 publications

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“…Such poor agreements are considered too large to allow devices to be used interchangeably. [12][13][14] Development of conversion equations has been suggested to allow follow-up of patients previously scanned on Stratus OCT and to enable interchangeable usage of both types of OCT. Forte et al 15 suggested a correction factor of 1.1 when converting values from Stratus to equate values from SD-SLO/OCT.…”

Section: Eyes With Dmementioning

confidence: 99%

Spectral- and time-domain optical coherence tomography measurements of macular thickness in normal eyes and in eyes with diabetic macular edema

Ibrahim

Sepah

Symons

et al. 2011

Eye

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Section: Eyes With Dmementioning

confidence: 99%

Spectral- and time-domain optical coherence tomography measurements of macular thickness in normal eyes and in eyes with diabetic macular edema

Ibrahim

Sepah

Symons

et al. 2011

Eye

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“…Abban minden szerző egyetért, hogy spectral-domain készülékkel nagyobb retinavastagsági értékeket kapunk, mint time-domain készülékkel [5,7,8,9,10,11,12,13,14,15,16]. Ez a különbség az egyes rendszerek különböző szegmentációs algoritmusainak különbségeiből adódik.…”

Section: Megbeszélésunclassified

“…A retina belső határoló rétege minden készülék eseté-ben a vitreoretinalis felszín, de a retina külső határoló rétegét az egyes OCT-készülékek máshová helyezik. Harmadik generáció esetében ez a retinalis fotorecep torpigmentepithelium komplex "belső csíkja" (ami a fotoreceptorok belső/külső junkciójának felel meg), negyedik generáció esetében az RPE külső szegélye [5]. A szegmentálási algoritmus alapelvéből is látszik, hogy a két generáció mérései között különbségek adódhatnak.…”

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Comparison of thickness values in nine macular subfields using time-domain and spectral-domain optical coherence tomography

et al. 2013

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Célkitűzés: Retinavastagság-értékek összehasonlítása spectral-domain (Cirrus HD-OCT) és time-domain (Stratus OCT) optikai koherencia tomog ráfi ás készülékkel. Módszer: Retinavastagság-mérések történtek a kilenc ETDRS macularis almezőben 20 egészséges személy azonos oldali szemén mindkét készülékkel. A Cirrus HD-OCT eseté-ben a Macular Cube 512×128 és a Macular Cube 200×200 protokollt, a Stratus OCT készülékkel a Fast Macular Thickness Map protokollt használtuk. Vizsgáltuk mindhárom mérési sorozat reprodukálhatóságát, és a mérések át-lagértékeit minden almezőben összehasonlítottuk egymással. Eredmények: A Stratus OCT-vel végzett mérési eredmé-nyek minden almezőben szignifi kánsan alacsonyabbak voltak, mint a Cirrus esetében (p<0,001). A Cirrus HD-OCT két különböző protokolljával végzett mérések eredményei között a korrelációs együttható 0,977 volt. Következtetések: A Cirrus HD-OCT használatával lényegesen jobb reprodukálhatóságot fi gyeltünk meg, mint a Stratus OCT eseté-ben. A Cirrus HD-OCT használatával a mérési értékek szignifi kánsan magasabbak minden almezőben, mint a Stratus OCT esetében. Különböző OCT-készülékek használatával jelentősen különböző mérési eredményekhez juthatunk, ezért az adatok összehasonlításakor óvatosság szükséges. Orv. Hetil., 154(52), 2059-2064. Kulcsszavak: optikai koherencia tomográfi a, macula, retina, vastagság Comparison of thickness values in nine macular subfi elds using time-domain and spectral-domain optical coherence tomographyAim: To compare macular thickness measurements with spectral-domain (Cirrus HD-OCT) and time-domain (StratusOCT) optical coherence tomography. Method: Macular thickness was measured in nine ETDRS subfi elds in the same eye of 20 healthy subjects using both instruments. Using Cirrus HD-OCT both the Macular Cube 512×128 and Macular Cube 200×200 protocol, using StratusOCT the Fast Macular Thickness Map protocol was performed. Reproducibility of all three measurement series was assessed and the average of the measurement series was compared on each fi eld. Results: Measurement values obtained by StratusOCT were signifi cantly lower than those obtained by Cirrus HD-OCT (p<0.001) in all subfi elds. Correlation coeffi cient between the results obtained by the two protocols of Cirrus HD-OCT was 0.977. Conclusions: By using Cirrus HD-OCT we could observe better repeatability than

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“…1,2 The introduction of spectral-domain OCT (SD-OCT) instruments with high scanning speeds and dense scanning patterns covering a large retinal area has eliminated the need to interpolate between just six scans in time-domain technology and has led to a more reliable assessment of retinal thickness measurements. [3][4][5][6] However, the accuracy of any retinal thickness measurement depends primarily on the accuracy of the segmentation algorithms that identify the retinal boundaries, which include the internal limiting membrane (ILM) and the retinal pigment epithelium (RPE). The currently available SD-OCT instruments each use a different proprietary algorithm.…”

Section: Introductionmentioning

confidence: 99%

Identifying the Boundaries of Retinal Pigment Epithelial Detachments Using Two Spectral-Domain Optical Coherence Tomography Instruments

Penha¹,

Gregori²,

Yehoshua³

et al. 2013

Ophthalmic Surg Lasers Imaging Retina

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BACKGROUND AND OBJECTIVE: To compare two spectral-domain optical coherence tomography (SD-OCT) instruments in identifying the boundaries of retinal pigment epithelium detachment (PED). PATIENTS AND METHODS: 27 eyes were scanned with Cirrus and Spectralis SD-OCT instruments during a single visit. Two Cirrus scan patterns were used: the 512 × 128 and 200 × 200 covering a 6 × 6 mm (20° × 20°) area. The Spectralis scan pattern consisted of seven B-scans, averaged 51 times, covering a 30° × 5° area. The main outcome measures were the retinal thickness at the foveal center and the number of segmentation failures on the central B-scan. RESULTS: The Spectralis algorithm failed to follow the proper retinal contour in 25 eyes (92.6%), while the segmentation on the Cirrus instrument was successful in every central B-scan. Spectralis yielded greater retinal thickness measurements in all cases, and the average difference between Cirrus and Spectralis was 139 μm ( P < .001). The intraclass correlation coefficient between the two Cirrus scan patterns was 0.998, and Cirrus versus Spectralis was 0.21. CONCLUSIONS: The Cirrus SD-OCT instrument identifies the appropriate segmentation boundaries in the presence PED. The Spectralis SD-OCT algorithm was unreliable in segmenting PEDs, leading to inaccurate retinal thickness measurements unless manual adjustments were performed.

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Prospective Comparison of Cirrus and Stratus Optical Coherence Tomography for Quantifying Retinal Thickness

Cited by 96 publications

References 34 publications

Spectral- and time-domain optical coherence tomography measurements of macular thickness in normal eyes and in eyes with diabetic macular edema

Spectral- and time-domain optical coherence tomography measurements of macular thickness in normal eyes and in eyes with diabetic macular edema

Comparison of thickness values in nine macular subfields using time-domain and spectral-domain optical coherence tomography

Identifying the Boundaries of Retinal Pigment Epithelial Detachments Using Two Spectral-Domain Optical Coherence Tomography Instruments

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