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相关概念视频

Classification of Bones01:18

Classification of Bones

5.7K
The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
5.7K
Introduction to the Skeletal System01:20

Introduction to the Skeletal System

5.8K
The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
5.8K
Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

4.6K
Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
4.6K
Bone Structure01:55

Bone Structure

48.7K
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
48.7K
Bone as Supporting Connective Tissue01:23

Bone as Supporting Connective Tissue

3.5K
Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body.
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts—...
3.5K
Gross Anatomy of Bone01:17

Gross Anatomy of Bone

5.3K
The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in...
5.3K

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相关实验视频

Updated: Jul 17, 2025

Construction of a Realistic, Whole-Body, Three-Dimensional Equine Skeletal Model using Computed Tomography Data
11:09

Construction of a Realistic, Whole-Body, Three-Dimensional Equine Skeletal Model using Computed Tomography Data

Published on: February 25, 2021

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老板:骨头,器官和皮肤的形状模型.

Karthik Shetty1, Annette Birkhold2, Srikrishna Jaganathan1

  • 1Pattern Recognition Lab, Department of Computer Science, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, 91058, Germany; Siemens Healthcare GmbH, Forchheim, 91301, Germany.

Computers in biology and medicine
|September 1, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的可变形的人体形状和姿势模型,将CT扫描中的皮肤,器官和骨整合起来. 这种先进的解剖模型提高了医学成像和图像引导干预的准确性.

关键词:
前进动力学是指前进的动力学.人的身体 人的身体 人的身体一个小小的网格.形状模型 形状模型

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Computer-Generated Animal Model Stimuli
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Computer-Generated Animal Model Stimuli

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A Human Bone Marrow 3D Model to Investigate the Dynamics and Interactions Between Resident Cells in Physiological or Tumoral Contexts
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A Human Bone Marrow 3D Model to Investigate the Dynamics and Interactions Between Resident Cells in Physiological or Tumoral Contexts

Published on: December 16, 2022

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相关实验视频

Last Updated: Jul 17, 2025

Construction of a Realistic, Whole-Body, Three-Dimensional Equine Skeletal Model using Computed Tomography Data
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Construction of a Realistic, Whole-Body, Three-Dimensional Equine Skeletal Model using Computed Tomography Data

Published on: February 25, 2021

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Computer-Generated Animal Model Stimuli
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Computer-Generated Animal Model Stimuli

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A Human Bone Marrow 3D Model to Investigate the Dynamics and Interactions Between Resident Cells in Physiological or Tumoral Contexts
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A Human Bone Marrow 3D Model to Investigate the Dynamics and Interactions Between Resident Cells in Physiological or Tumoral Contexts

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科学领域:

  • 医学成像医学成像
  • 计算解剖学的计算解剖学
  • 生物医学工程 生物医学工程

背景情况:

  • 虚拟解剖模型增强了临床任务,如工作流程自动化和图像引导干预.
  • 当前的统计形状模型 (SSM) 往往缺乏全面的器官/骨代表性和人口多样性.
  • 高质量的患者表面和内部器官数据对于准确的姿势和形状估计至关重要.

研究的目的:

  • 开发一个可变形的人类形状和姿势模型,整合皮肤,内脏和骨.
  • 为了改善医疗应用,创建一个整体的解剖学表示.
  • 解决现有SSM在人口代表性和范围方面的局限性.

主要方法:

  • 从CT图像中学习了一个可变形的模型,结合了皮肤,器官和骨.
  • 概率PCA在姿势正常化空间中使用,以建模统计变异,同时保持关节动力学.
  • 在注册和公开可用的数据集上评估模型性能.

主要成果:

  • 该模型在注册数据集上实现了骨头平均误差3.6毫米,器官平均误差8.8毫米.
  • 使用皮肤表面数据或患者元数据导致骨器官错误总值分别为8.68毫米和8.11毫米.
  • 在TotalSegmentator数据集上的错误为骨头的5.10毫米,器官的8.72毫米.

结论:

  • 可以准确高效地创建解剖学参数化的统计形状模型.
  • 拟议的整体模型为各种医疗应用中的自动化提供了显著的好处.
  • 该模型允许构建可直接集成到各种医疗应用中的形状模型.