LIFE: A Generalizable Autodidactic Pipeline for 3D OCT-A Vessel Segmentation.
LIFE: A Generalizable Autodidactic Pipeline for 3D OCT-A Vessel Segmentation.
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LIFE:用于3D OCT-A血管分割的可推广的自学管道。
DOI:
10.1007/978-3-030-87193-2_49
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发表时间:
2021-09
期刊:
影响因子:
--
通讯作者:
Oguz I
中科院分区:
文献类型:
--
作者:
Hu D;Cui C;Li H;Larson KE;Tao YK;Oguz I
Optical coherence tomography (OCT) is a non-invasive imaging technique widely used for ophthalmology. It can be extended to OCT angiography (OCT-A), which reveals the retinal vasculature with improved contrast. Recent deep learning algorithms produced promising vascular segmentation results; however, 3D retinal vessel segmentation remains difficult due to the lack of manually annotated training data. We propose a learning-based method that is only supervised by a self-synthesized modality named local intensity fusion (LIF). LIF is a capillary-enhanced volume computed directly from the input OCT-A. We then construct the local intensity fusion encoder (LIFE) to map a given OCT-A volume and its LIF counterpart to a shared latent space. The latent space of LIFE has the same dimensions as the input data and it contains features common to both modalities. By binarizing this latent space, we obtain a volumetric vessel segmentation. Our method is evaluated in a human fovea OCT-A and three zebrafish OCT-A volumes with manual labels. It yields a Dice score of 0.7736 on human data and 0.8594 ± 0.0275 on zebrafish data, a dramatic improvement over existing unsupervised algorithms.
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