COMPARISON OF MANUAL AND SEMIAUTOMATED FUNDUS AUTOFLUORESCENCE ANALYSIS OF MACULAR ATROPHY IN STARGARDT DISEASE PHENOTYPE

Laura Kuehlewein, Amir H. Hariri, Alexander Ho, Laurie Dustin, Yulia Wolfson, Rupert W. Strauss, Hendrik P N Scholl, SriniVas R. Sadda

Research output: Contribution to journalArticle

Abstract

PURPOSE:: To evaluate manual and semiautomated grading techniques for assessing decreased fundus autofluorescence (DAF) in patients with Stargardt disease phenotype. METHODS:: Certified reading center graders performed manual and semiautomated (region finder—based) grading of confocal scanning laser ophthalmoscopy (cSLO) fundus autofluorescence (FAF) images for 41 eyes of 22 patients. Lesion types were defined based on the black level and sharpness of the border: definite decreased autofluorescence (DDAF), well, and poorly demarcated questionably decreased autofluorescence (WDQDAF, PDQDAF). Agreement in grading between the two methods and inter- and intra-grader agreement was assessed by kappa coefficients (κ) and intraclass correlation coefficients (ICC). RESULTS:: The mean ± standard deviation (SD) area was 3.07 ± 3.02 mm for DDAF (n = 31), 1.53 ± 1.52 mm for WDQDAF (n = 9), and 6.94 ± 10.06 mm for PDQDAF (n = 17). The mean ± SD absolute difference in area between manual and semiautomated grading was 0.26 ± 0.28 mm for DDAF, 0.20 ± 0.26 mm for WDQDAF, and 4.05 ± 8.32 mm for PDQDAF. The ICC (95% confidence interval) for method comparison was 0.992 (0.984–0.996) for DDAF, 0.976 (0.922–0.993) for WDQDAF, and 0.648 (0.306–0.842) for PDQDAF. Inter- and intra-grader agreement in manual and semiautomated quantitative grading was better for DDAF (0.981–0.996) and WDQDAF (0.995–0.999) than for PDQDAF (0.715–0.993). CONCLUSION:: Manual and semiautomated grading methods showed similar levels of reproducibility for assessing areas of decreased autofluorescence in patients with Stargardt disease phenotype. Excellent agreement and reproducibility were observed for well demarcated lesions.

Original languageEnglish (US)
JournalRetina
DOIs
StateAccepted/In press - Nov 18 2015

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Atrophy
Phenotype
Ophthalmoscopy
Reading
Lasers
Confidence Intervals
Stargardt disease 1

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Kuehlewein, L., Hariri, A. H., Ho, A., Dustin, L., Wolfson, Y., Strauss, R. W., ... Sadda, S. R. (Accepted/In press). COMPARISON OF MANUAL AND SEMIAUTOMATED FUNDUS AUTOFLUORESCENCE ANALYSIS OF MACULAR ATROPHY IN STARGARDT DISEASE PHENOTYPE. Retina. https://doi.org/10.1097/IAE.0000000000000870

COMPARISON OF MANUAL AND SEMIAUTOMATED FUNDUS AUTOFLUORESCENCE ANALYSIS OF MACULAR ATROPHY IN STARGARDT DISEASE PHENOTYPE. / Kuehlewein, Laura; Hariri, Amir H.; Ho, Alexander; Dustin, Laurie; Wolfson, Yulia; Strauss, Rupert W.; Scholl, Hendrik P N; Sadda, SriniVas R.

In: Retina, 18.11.2015.

Research output: Contribution to journalArticle

Kuehlewein, Laura ; Hariri, Amir H. ; Ho, Alexander ; Dustin, Laurie ; Wolfson, Yulia ; Strauss, Rupert W. ; Scholl, Hendrik P N ; Sadda, SriniVas R. / COMPARISON OF MANUAL AND SEMIAUTOMATED FUNDUS AUTOFLUORESCENCE ANALYSIS OF MACULAR ATROPHY IN STARGARDT DISEASE PHENOTYPE. In: Retina. 2015.
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title = "COMPARISON OF MANUAL AND SEMIAUTOMATED FUNDUS AUTOFLUORESCENCE ANALYSIS OF MACULAR ATROPHY IN STARGARDT DISEASE PHENOTYPE",
abstract = "PURPOSE:: To evaluate manual and semiautomated grading techniques for assessing decreased fundus autofluorescence (DAF) in patients with Stargardt disease phenotype. METHODS:: Certified reading center graders performed manual and semiautomated (region finder—based) grading of confocal scanning laser ophthalmoscopy (cSLO) fundus autofluorescence (FAF) images for 41 eyes of 22 patients. Lesion types were defined based on the black level and sharpness of the border: definite decreased autofluorescence (DDAF), well, and poorly demarcated questionably decreased autofluorescence (WDQDAF, PDQDAF). Agreement in grading between the two methods and inter- and intra-grader agreement was assessed by kappa coefficients (κ) and intraclass correlation coefficients (ICC). RESULTS:: The mean ± standard deviation (SD) area was 3.07 ± 3.02 mm for DDAF (n = 31), 1.53 ± 1.52 mm for WDQDAF (n = 9), and 6.94 ± 10.06 mm for PDQDAF (n = 17). The mean ± SD absolute difference in area between manual and semiautomated grading was 0.26 ± 0.28 mm for DDAF, 0.20 ± 0.26 mm for WDQDAF, and 4.05 ± 8.32 mm for PDQDAF. The ICC (95{\%} confidence interval) for method comparison was 0.992 (0.984–0.996) for DDAF, 0.976 (0.922–0.993) for WDQDAF, and 0.648 (0.306–0.842) for PDQDAF. Inter- and intra-grader agreement in manual and semiautomated quantitative grading was better for DDAF (0.981–0.996) and WDQDAF (0.995–0.999) than for PDQDAF (0.715–0.993). CONCLUSION:: Manual and semiautomated grading methods showed similar levels of reproducibility for assessing areas of decreased autofluorescence in patients with Stargardt disease phenotype. Excellent agreement and reproducibility were observed for well demarcated lesions.",
author = "Laura Kuehlewein and Hariri, {Amir H.} and Alexander Ho and Laurie Dustin and Yulia Wolfson and Strauss, {Rupert W.} and Scholl, {Hendrik P N} and Sadda, {SriniVas R.}",
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T1 - COMPARISON OF MANUAL AND SEMIAUTOMATED FUNDUS AUTOFLUORESCENCE ANALYSIS OF MACULAR ATROPHY IN STARGARDT DISEASE PHENOTYPE

AU - Kuehlewein, Laura

AU - Hariri, Amir H.

AU - Ho, Alexander

AU - Dustin, Laurie

AU - Wolfson, Yulia

AU - Strauss, Rupert W.

AU - Scholl, Hendrik P N

AU - Sadda, SriniVas R.

PY - 2015/11/18

Y1 - 2015/11/18

N2 - PURPOSE:: To evaluate manual and semiautomated grading techniques for assessing decreased fundus autofluorescence (DAF) in patients with Stargardt disease phenotype. METHODS:: Certified reading center graders performed manual and semiautomated (region finder—based) grading of confocal scanning laser ophthalmoscopy (cSLO) fundus autofluorescence (FAF) images for 41 eyes of 22 patients. Lesion types were defined based on the black level and sharpness of the border: definite decreased autofluorescence (DDAF), well, and poorly demarcated questionably decreased autofluorescence (WDQDAF, PDQDAF). Agreement in grading between the two methods and inter- and intra-grader agreement was assessed by kappa coefficients (κ) and intraclass correlation coefficients (ICC). RESULTS:: The mean ± standard deviation (SD) area was 3.07 ± 3.02 mm for DDAF (n = 31), 1.53 ± 1.52 mm for WDQDAF (n = 9), and 6.94 ± 10.06 mm for PDQDAF (n = 17). The mean ± SD absolute difference in area between manual and semiautomated grading was 0.26 ± 0.28 mm for DDAF, 0.20 ± 0.26 mm for WDQDAF, and 4.05 ± 8.32 mm for PDQDAF. The ICC (95% confidence interval) for method comparison was 0.992 (0.984–0.996) for DDAF, 0.976 (0.922–0.993) for WDQDAF, and 0.648 (0.306–0.842) for PDQDAF. Inter- and intra-grader agreement in manual and semiautomated quantitative grading was better for DDAF (0.981–0.996) and WDQDAF (0.995–0.999) than for PDQDAF (0.715–0.993). CONCLUSION:: Manual and semiautomated grading methods showed similar levels of reproducibility for assessing areas of decreased autofluorescence in patients with Stargardt disease phenotype. Excellent agreement and reproducibility were observed for well demarcated lesions.

AB - PURPOSE:: To evaluate manual and semiautomated grading techniques for assessing decreased fundus autofluorescence (DAF) in patients with Stargardt disease phenotype. METHODS:: Certified reading center graders performed manual and semiautomated (region finder—based) grading of confocal scanning laser ophthalmoscopy (cSLO) fundus autofluorescence (FAF) images for 41 eyes of 22 patients. Lesion types were defined based on the black level and sharpness of the border: definite decreased autofluorescence (DDAF), well, and poorly demarcated questionably decreased autofluorescence (WDQDAF, PDQDAF). Agreement in grading between the two methods and inter- and intra-grader agreement was assessed by kappa coefficients (κ) and intraclass correlation coefficients (ICC). RESULTS:: The mean ± standard deviation (SD) area was 3.07 ± 3.02 mm for DDAF (n = 31), 1.53 ± 1.52 mm for WDQDAF (n = 9), and 6.94 ± 10.06 mm for PDQDAF (n = 17). The mean ± SD absolute difference in area between manual and semiautomated grading was 0.26 ± 0.28 mm for DDAF, 0.20 ± 0.26 mm for WDQDAF, and 4.05 ± 8.32 mm for PDQDAF. The ICC (95% confidence interval) for method comparison was 0.992 (0.984–0.996) for DDAF, 0.976 (0.922–0.993) for WDQDAF, and 0.648 (0.306–0.842) for PDQDAF. Inter- and intra-grader agreement in manual and semiautomated quantitative grading was better for DDAF (0.981–0.996) and WDQDAF (0.995–0.999) than for PDQDAF (0.715–0.993). CONCLUSION:: Manual and semiautomated grading methods showed similar levels of reproducibility for assessing areas of decreased autofluorescence in patients with Stargardt disease phenotype. Excellent agreement and reproducibility were observed for well demarcated lesions.

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