相关概念视频
Higher Mental Functions of the Brain: Language
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Cerebral Hemispheres
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
Lateralization
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
Language and Cognition
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
Learning Disabilities
Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
Dyslexia
Dyslexia is a...
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推进心脏MRI多结构细分:一个半监督的多维一致性约束学习网络.
Hongzhen Cui1, Meihua Piao2, Xinghe Huang2
1School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, China.
Medical physics
|April 11, 2025
概括
多维一致性约束学习网络 (MDCC-Net) 通过使用半监督学习来改善心脏MRI细分. 这种深度学习模型实现了对心脏结构,如左心室和右心室进行细分的最先进的结果.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
- 生物医学工程 生物医学工程
背景情况:
- 深度卷积神经网络 (DCNNs) 显示出医疗磁共振成像 (MRI) 分段的前景.
- 在语义歧视,边界划分和空间上下文建模方面仍然存在挑战,用于MRI细分中的DCNN.
研究的目的:
- 引入多维一致性约束学习网络 (MDCC-Net) 用于多结构心脏MRI细分.
- 使用半监督方法解决现有DCNN的局限性.
主要方法:
- MDCC-Net使用一个共享的编码器和多个差异化解码器.
- 该网络结合了金字塔边界一致性特征和空间一致性约束.
- 相互一致性约束,伪标签,子损失和平均平方误差损失都用于增强细分.
主要成果:
- MDCC-Net在ACCDC心脏MRI数据集上实现了最先进的性能,用于分割左心室 (LV),心肌 (MYO) 和右心室 (RV).
- 平均子系数达到0.8763,贾卡德指数达到0.7906.
- 对LV的最佳子是0.8965,对RV的平均表面距离是0.5391.
- 在M&Ms数据集上确认了模型概括.
结论:
- 通过多维一致性约束,MDCC-Net有效地增强了多结构心脏MRI细分.
- 这种方法为在临床自动化和半自动化细分中整合多功能融合提供了基础.
- 突出了临床环境中诊断和治疗规划过程的潜在改进.


