BACKGROUND AND OBJECTIVE: The commercially available optical coherence tomography (OCT) scanner displays images in a pre-set window regardless of the projected scan length on the retinal surface. The aim of this study was to demonstrate the true dimensions of proportion-corrected OCT images and the additional information present in grayscale images. MATERIALS AND METHODS: OCT raw data were exported to an IBM-compatible PC and processed to show grayscale and proportion-corrected images using an automated software of our own design. RESULTS: Eyes with cystoid macular edema and retinal pigment detachment were analyzed. Grayscale images showed a finer gradation of signal reflectance. Scan lengths of 2, 4, 6, and 8 mm on the retinal surface showed different qualitative appearances using proportion-corrected software from the printed or on-screen images. CONCLUSIONS: Grayscale OCT images can be used to demonstrate additional information not present in false-color images. The disparity between the standard OCT image format and proportion-corrected images emphasizes the need for quantitative rather than qualitative evaluation of retinal dimensions and internal reflectance.
BACKGROUND AND OBJECTIVE: The commercially available optical coherence tomography (OCT) scanner displays images in a pre-set window regardless of the projected scan length on the retinal surface. The aim of this study was to demonstrate the true dimensions of proportion-corrected OCT images and the additional information present in grayscale images. MATERIALS AND METHODS: OCT raw data were exported to an IBM-compatible PC and processed to show grayscale and proportion-corrected images using an automated software of our own design. RESULTS: Eyes with cystoid macular edema and retinal pigment detachment were analyzed. Grayscale images showed a finer gradation of signal reflectance. Scan lengths of 2, 4, 6, and 8 mm on the retinal surface showed different qualitative appearances using proportion-corrected software from the printed or on-screen images. CONCLUSIONS: Grayscale OCT images can be used to demonstrate additional information not present in false-color images. The disparity between the standard OCT image format and proportion-corrected images emphasizes the need for quantitative rather than qualitative evaluation of retinal dimensions and internal reflectance.
Authors: Larry Kagemann; Gadi Wollstein; Hiroshi Ishikawa; Zachary Nadler; Ian A Sigal; Lindsey S Folio; Joel S Schuman Journal: Ophthalmology Date: 2012-06-08 Impact factor: 12.079
Authors: Suhail Alam; Robert J Zawadzki; Stacey Choi; Christina Gerth; Susanna S Park; Lawrence Morse; John S Werner Journal: Ophthalmology Date: 2006-06-12 Impact factor: 12.079
Authors: Helena Giannakaki-Zimmermann; Wolfgang Huf; Karen B Schaal; Kaspar Schürch; Chantal Dysli; Muriel Dysli; Anita Zenger; Lala Ceklic; Carlos Ciller; Stephanos Apostolopoulos; Sandro De Zanet; Raphael Sznitman; Andreas Ebneter; Martin S Zinkernagel; Sebastian Wolf; Marion R Munk Journal: Transl Vis Sci Technol Date: 2019-05-02 Impact factor: 3.283