Cortex2vector: anatomical embedding of cortical folding patterns

嵌入 编码 折叠(DSP实现) 计算机科学 集合(抽象数据类型) 模式识别(心理学) 人工智能 生物 生物化学 基因 电气工程 工程类 程序设计语言
作者
Lu Zhang,Lin Zhao,David R. Liu,Zihao Wu,Xianqiao Wang,Tianming Liu,Dajiang Zhu
出处
期刊:Cerebral Cortex [Oxford University Press]
标识
DOI:10.1093/cercor/bhac465
摘要

Abstract Current brain mapping methods highly depend on the regularity, or commonality, of anatomical structure, by forcing the same atlas to be matched to different brains. As a result, individualized structural information can be overlooked. Recently, we conceptualized a new type of cortical folding pattern called the 3-hinge gyrus (3HG), which is defined as the conjunction of gyri coming from three directions. Many studies have confirmed that 3HGs are not only widely existing on different brains, but also possess both common and individual patterns. In this work, we put further effort, based on the identified 3HGs, to establish the correspondences of individual 3HGs. We developed a learning-based embedding framework to encode individual cortical folding patterns into a group of anatomically meaningful embedding vectors (cortex2vector). Each 3HG can be represented as a combination of these embedding vectors via a set of individual specific combining coefficients. In this way, the regularity of folding pattern is encoded into the embedding vectors, while the individual variations are preserved by the multi-hop combination coefficients. Results show that the learned embeddings can simultaneously encode the commonality and individuality of cortical folding patterns, as well as robustly infer the complicated many-to-many anatomical correspondences among different brains.
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