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相关概念视频

Morphogenesis02:19

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
Papillary Dermis01:11

Papillary Dermis

Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
Layers of the Epidermis01:21

Layers of the Epidermis

The epidermis, the outermost layer of the skin, is composed of several distinct layers. From deep to superficial, the layers of the epidermis are as follows:
Stratum Basale
Stratum basale, also known as the stratum germinativum, is the deepest layer of the epidermis. It is composed of a single layer of actively dividing cells called basal cells or basal keratinocytes. These cells constantly undergo cell division to replenish the upper layers of the epidermis. Additionally, melanocytes, which...
Reticular Dermis01:15

Reticular Dermis

The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
Reticular Layer
Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...
Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Deformations in a Transverse Cross Section01:21

Deformations in a Transverse Cross Section

When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...

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相关实验视频

Updated: Jun 28, 2026

Measuring Connectivity in the Primary Visual Pathway in Human Albinism Using Diffusion Tensor Imaging and Tractography
13:26

Measuring Connectivity in the Primary Visual Pathway in Human Albinism Using Diffusion Tensor Imaging and Tractography

Published on: August 11, 2016

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皮层Morph:通过使用VoxelMorph的二次形态注册来快速估计皮层厚度.

Richard McKinley1, Christian Rummel1

  • 1Support Center for Advanced Neuroimaging (SCAN), University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
|December 5, 2025
PubMed
概括
此摘要是机器生成的。

CortexMorph使用深度学习,从MRI扫描中快速估计皮质厚度,为检测神经疾病的传统方法提供更快,更灵敏的替代方案.

关键词:
深度学习是一种深度学习.这就是为什么MRI是MRI.形态测量法 形态测量法 形态测量法没有监督的图像注册.皮层厚度 皮层厚度

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A Standardized Pipeline for Examining Human Cerebellar Grey Matter Morphometry using Structural Magnetic Resonance Imaging
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Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities
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相关实验视频

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Measuring Connectivity in the Primary Visual Pathway in Human Albinism Using Diffusion Tensor Imaging and Tractography
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A Standardized Pipeline for Examining Human Cerebellar Grey Matter Morphometry using Structural Magnetic Resonance Imaging
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科学领域:

  • 神经成像是一种神经成像.
  • 计算神经科学是一种神经科学.
  • 医学图像分析 医学图像分析

背景情况:

  • 皮层厚度估计对于诊断神经和精神疾病至关重要.
  • 像Freesurfer这样的基于表面的方法很常见,但可能耗时.
  • 迪雷克特方法提供了一个替代方案,但其注册步骤很慢.

研究的目的:

  • 利用深度学习开发一种更快的皮质厚度估计方法.
  • 将基于深度学习的细分与一种新的变形场回归方法相结合.
  • 为了保持或提高对皮质缩检测的敏感性.

主要方法:

  • 介绍了CortexMorph,这是一个无监督的深度学习方法,用于回归DiReCT的变形场.
  • 集成的CortexMorph与深度学习细分模型用于快速厚度估计.
  • 在OASIS-3数据集和合成皮质厚度幻影上验证了该方法.

主要成果:

  • CortexMorph能够从T1权重的MRI中在几秒钟内对区域智能的皮质厚度进行估计.
  • 综合方法表明对子声细胞皮层稀释的高灵敏度.
  • 与传统的代注册方法相比,实现了更快的处理时间.

结论:

  • CortexMorph显著加快了基于DiReCT的皮质厚度分析.
  • 这种方法为检测皮层缩提供了一个快速而敏感的工具.
  • 这种方法对神经学和精神病学研究中的临床应用具有前景.