29 March 2013 Automated 3D region-based volumetric estimation of optic disc swelling in papilledema using spectral-domain optical coherence tomography
Author Affiliations +
Abstract
The six-stage Frisén scale is a qualitative and subjective method for assessing papilledema (optic disc swelling due to raised intracranial pressure) using fundus photographs. The recent introduction of spectral-domain optical coherence tomography (SD-OCT) presents a promising alternative to enable the 3-D quantitative estimation of papilledema. In this work, we propose an automated region-based volumetric estimation of the degree of papilledema from SD-OCT. After using a custom graph-based approach to segment the surfaces of the swollen optic nerve head, the volumes of the nasal, superior, temporal, and inferior regions are computed. Using a dataset of 70 SD-OCT optic-nerve-head (ONH) SD-OCT scans the Spearman rank correlation coefficients between expert-defined Frisén scale grades and the total retinal (TR) volume, nasal, superior, temporal, inferior regional volumes were 0.737, 0.752, 0.747, 0.770 and 0.758, respectively. Also, a fuzzy k-nearest-neighbor (k-NN) algorithm was used to predict Frisén scale grades (in a leave-one-subject-out fashion). Using multiple features rather than just the TR volume made the resulting mean Frisén grade difference (MGD) between the expert-defined grades 0.386 (down from 0.629) and prediction accuracy 64.29% (up from 41.43%).
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jui-Kai Wang, Jui-Kai Wang, Mohammad Saleh Miri, Mohammad Saleh Miri, Randy H. Kardon, Randy H. Kardon, Mona K. Garvin, Mona K. Garvin, } "Automated 3D region-based volumetric estimation of optic disc swelling in papilledema using spectral-domain optical coherence tomography", Proc. SPIE 8672, Medical Imaging 2013: Biomedical Applications in Molecular, Structural, and Functional Imaging, 867214 (29 March 2013); doi: 10.1117/12.2007001; https://doi.org/10.1117/12.2007001
PROCEEDINGS
8 PAGES


SHARE
Back to Top