Three-dimensional image reconstruction of macula from stratus optical coherence tomography (OCT) for diagnosis of macular degeneration

13th South-East Asian Congress of Medical Physics 2015

物理学;医药卫生

Arinilhaq^1 ; Widita, R.^1

Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Jawa Barat, Bandung

40132, Indonesia^1

关键词: Diagnostic images;    Linear interpolation technique;    Macular degeneration;    Reconstruction matrix;    Stratus optical coherence tomography;    Thickness charts;    Three-dimensional image reconstruction;    Volumetric images;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/694/1/012042/pdf
DOI  :  10.1088/1742-6596/694/1/012042

学科分类：卫生学

来源: IOP

【 摘 要 】

Diagnosis of macular degeneration using a Stratus OCT with a fast macular thickness map (FMTM) method produced six B-scan images of macula from different angles. The images were converted into a retinal thickness chart to be evaluated by normal distribution percentile of data so that it can be classified as normal thickness of macula or as experiencing abnormality (e.g. thickening and thinning). Unfortunately, the diagnostic images only represent the retinal thickness in several areas of the macular region. Thus, this study is aims to obtain the entire retinal thickness in the macula area from Status OCT's output images. Basically, the volumetric image is obtained by combining each of the six images. Reconstruction consists of a series of processes such as pre-processing, segmentation, and interpolation. Linear interpolation techniques are used to fill the empty pixels in reconstruction matrix. Based on the results, this method is able to provide retinal thickness maps on the macula surface and the macula 3D image. Retinal thickness map can display the macula area which experienced abnormalities. The macula 3D image can show the layers of tissue in the macula that is abnormal. The system built cannot replace ophthalmologist in decision making in term of diagnosis.