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相关概念视频

Anatomy of Blood Vessels01:20

Anatomy of Blood Vessels

1.0K
The vascular system, an integral part of the circulatory system, comprises various blood vessels that play crucial roles in maintaining the body's homeostasis. These blood vessels form a complex and efficient circulatory network. The three primary categories of blood vessels are the arteries, veins, and capillaries.
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta,...
1.0K
Development of Blood Vessels01:07

Development of Blood Vessels

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The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
793
Structure of Blood Vessels01:15

Structure of Blood Vessels

6.0K
Blood is circulated throughout the human body through a network of blood vessels called the circulatory system. This system includes arteries that transport blood from the heart to various body parts. These arterial pathways divide into smaller vessels until they reach the arterioles, which further split into capillaries. It is within these minuscule capillaries that the exchange of nutrients and waste products takes place. After this exchange, the blood is collected by venules, which fuse to...
6.0K
Overview of Blood Vessels01:14

Overview of Blood Vessels

5.5K
The human cardiovascular system comprises five primary types of blood vessels: arteries, arterioles, veins, venules, and capillaries, each serving unique functions.
Arteries and Arterioles: Arteries are muscular and elastic vessels that primarily carry oxygenated blood from the heart to body tissues, except for the pulmonary artery, which carries deoxygenated blood. They have thick walls to withstand high pressure and contain a layer of muscle tissue, allowing them to expand or contract as...
5.5K

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相关实验视频

Updated: Sep 14, 2025

Generation of Human Blood Vessel Organoids from Pluripotent Stem Cells
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Generation of Human Blood Vessel Organoids from Pluripotent Stem Cells

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用于3D血管生成建模的递归变异自编码器.

Paula Feldman1, Miguel Fainstein2, Viviana Siless2

  • 1Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina; Universidad Torcuato Di Tella, Buenos Aires, Argentina.

Medical image analysis
|July 18, 2025
PubMed
概括

一个新的递归变异神经网络 (RvNN) 产生多样化和准确的3D血管模型. 这一进步有助于医疗培训和模拟,通过密切模仿真实解剖数据.

关键词:
生成式建模生成式建模神经网络的神经网络的神经网络血管 3D 模型

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Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
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An In Vitro 3D Model and Computational Pipeline to Quantify the Vasculogenic Potential of iPSC-Derived Endothelial Progenitors
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Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
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科学领域:

  • 生物医学工程 生物医学工程
  • 计算机科学 计算机科学
  • 医疗成像医学成像

背景情况:

  • 准确的解剖树表示对于临床诊断和治疗规划至关重要.
  • 现有的基于规则的合成血管系统方法缺乏真实解剖数据的多样性和复杂性.
  • 血管结构的复杂拓和几何构造带来了重要的表示挑战.

研究的目的:

  • 开发一种用于合成多样化和准确的3D血管模型的新方法.
  • 克服现有的基于规则的血管合成技术的局限性.
  • 为医疗培训和血液动力学模拟中的应用创造现实的血管几何形状.

主要方法:

  • 开发了一个递归变异神经网络 (RvNN),利用层次的血管组织.
  • 学习了一个低维多元编码分支连接和几何特征.
  • 采样了RvNN隐藏空间以生成新的容器几何形状.

主要成果:

  • 生成高精度和多样性的3D血管模型.
  • 在船舶半径,长度和扭曲度方面与真实数据取得了很高的相似性.
  • 在各种数据集中表现出有效性,包括动脉瘤患者.

结论:

  • 递归变异神经网络 (RvNN) 成功合成了现实的3D血管模型.
  • 这种技术比以往基于规则的方法有了显著的进步.
  • 生成的模型适用于医疗和外科培训,以及血液动力学模拟.