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相关概念视频

Skin Cancer01:30

Skin Cancer

4.1K
Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
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Pigmentation01:19

Pigmentation

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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
2.4K
Layers of the Epidermis01:21

Layers of the Epidermis

4.0K
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...
4.0K
Cells of the Epidermis01:24

Cells of the Epidermis

3.9K
The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...
3.9K
Classification of Epithelial Tissues: Stratified Epithelium01:29

Classification of Epithelial Tissues: Stratified Epithelium

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Stratified epithelium consists of several stacked layers of cells. They provide the durability to withstand constant physical and chemical attacks. Stratified epithelium is named after the shape of the most apical layer of cells. Stratified squamous epithelium is the most common type found in the human body. In this tissue, the apical cells are squamous, whereas the basal layer contains either columnar or cuboidal cells. The basal cells divide to form new daughter cells, which gradually become...
9.1K
Papillary Dermis01:11

Papillary Dermis

2.8K
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...
2.8K

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相关实验视频

Updated: Jun 29, 2025

A 3D Organotypic Melanoma Spheroid Skin Model
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A 3D Organotypic Melanoma Spheroid Skin Model

Published on: May 18, 2018

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对黑色素瘤病变的分类探索皮肤镜结构.

Fiza Saeed Malik1, Muhammad Haroon Yousaf1,2, Hassan Ahmed Sial3

  • 1Department of Computer Engineering, University of Engineering and Technology, Taxila, Pakistan.

Frontiers in big data
|April 9, 2024
PubMed
概括
此摘要是机器生成的。

这项研究通过使用人工智能来分析皮肤镜结构来增强黑色素瘤检测,提高准确性并解决人工智能模型脆弱性,以便更好地诊断皮肤癌.

关键词:
在 Derm7ptpt 中.PH2 PH2 的时间视觉转换器 视觉转换器皮肤镜结构的结构.医学成像医学成像黑色素瘤是一种黑色素瘤.

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The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
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Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
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科学领域:

  • 皮肤病学 皮肤病学
  • 人工智能的人工智能
  • 医疗成像医学成像

背景情况:

  • 黑色素瘤是一种危险的皮肤癌,在早期发现的情况下,其治愈率很高,但错误分类显著降低了生存率.
  • 黑色素瘤和良性瘤的临床变异给皮肤科医生带来了诊断挑战.
  • 目前的诊断方法有局限性,这突出了皮肤病学中人工智能的需要.

研究的目的:

  • 使用人工智能探索皮肤镜结构,以改进黑色素瘤病变的分类.
  • 调查和解决人工智能模型在区分黑色素瘤和良性病变中的"脆弱性".
  • 为了提高AI模型对黑色素瘤诊断中的图像变异的稳定性.

主要方法:

  • 使用了专家注释的皮肤镜像数据集.
  • 使用变压器和卷积神经网络 (CNN) 模型进行图像分类.
  • 专注于关键的皮肤镜结构:蓝白面,点/球体和条纹.
  • 评估模型性能和易受图像变化的敏感性,使用各种测试集.

主要成果:

  • 增加卷积的视觉变压器在黑色素瘤分类中达到高达98%的准确性.
  • 美国CNN (VGG-16,DenseNet-121) 显示50-60%的准确性,在非皮肤镜特征方面表现更好.
  • 没有卷积的视觉变压器表现出脆弱性,在各种数据集上精度降低.
  • 数据增强策略成功地减轻了AI模型的脆弱性和持续的准确性.

结论:

  • 提出了一个使用三个皮肤镜结构的新型黑色素瘤分类方案.
  • 该研究涉及人工智能模型对黑色素瘤诊断中的图像变异的敏感性.
  • 未来的工作包括收集更大的注释数据集和自动化皮肤镜特征提取.