Segmentation and Quantification for Angle-Closure Glaucoma Assessment in Anterior Segment OCT

IEEE Transactions on Medical Imaging
Huazhu FuTin Aung

Abstract

Angle-closure glaucoma is a major cause of irreversible visual impairment and can be identified by measuring the anterior chamber angle (ACA) of the eye. The ACA can be viewed clearly through anterior segment optical coherence tomography (AS-OCT), but the imaging characteristics and the shapes and locations of major ocular structures can vary significantly among different AS-OCT modalities, thus complicating image analysis. To address this problem, we propose a data-driven approach for automatic AS-OCT structure segmentation, measurement, and screening. Our technique first estimates initial markers in the eye through label transfer from a hand-labeled exemplar data set, whose images are collected over different patients and AS-OCT modalities. These initial markers are then refined by using a graph-based smoothing method that is guided by AS-OCT structural information. These markers facilitate segmentation of major clinical structures, which are used to recover standard clinical parameters. These parameters can be used not only to support clinicians in making anatomical assessments, but also to serve as features for detecting anterior angle closure in automatic glaucoma screening algorithms. Experiments on Visante AS-OCT and Cir...Continue Reading

Citations

Nov 2, 2019·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Abdullah SarhanReda Alhajj
Feb 8, 2021·Medical Image Analysis·Huaying HaoJiang Liu

❮ Previous
Next ❯

Related Concepts

Related Feeds

Angelman Syndrome

Angelman syndrome is a neurogenetic imprinting disorder caused by loss of the maternally inherited UBE3A gene and is characterized by generalized epilepsy, limited expressive speech, sleep dysfunction, and movement disorders. Here is the latest research.