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相关概念视频

Overview of Systemic Veins01:11

Overview of Systemic Veins

453
Systemic veins are crucial blood vessels that return deoxygenated blood from various body tissues back to the heart. There are three systemic veins that return deoxygenated blood to the heart, they are as follows.
The coronary sinus, the heart's principal vein, resides in the coronary sulcus on the heart's posterior aspect. This broad venous channel receives nearly all venous blood from the myocardium, the heart muscle. It is fed by three primary veins: the great cardiac vein, the...
453
Veins of Lower Limbs01:15

Veins of Lower Limbs

774
The human body consists of an intricate network of veins responsible for the crucial task of blood drainage from the lower limbs. These veins can be categorized into two main types: deep veins and superficial veins.
Formed by the union of the medial and lateral plantar veins, the posterior tibial vein, rising through the calf muscle, assimilates the fibular vein. The anterior tibial vein, a superior extension of the foot's dorsalis pedis vein, merges with the posterior tibial vein at the...
774
Veins of Upper Limbs01:17

Veins of Upper Limbs

791
The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
791
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

1.2K
Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
1.2K
Veins as Blood Reservoirs01:10

Veins as Blood Reservoirs

4.3K
Veins, while chiefly responsible for circulating blood back to the heart, also function as storage vessels for blood. They house approximately 64 percent of the body's total blood volume, a feat made possible by their high capacitance—the inherent ability to expand and accommodate large volumes of blood, even under low pressure. The large diameter and thin walls of veins augment their distensibility, significantly more so than arteries, due to their classification as capacitance...
4.3K
Veins of the Abdomen and Pelvis01:18

Veins of the Abdomen and Pelvis

556
The human body is a complex system of interconnected parts, and the circulatory system plays a crucial role in maintaining overall health. One key component of this system is the inferior vena cava, a large vein responsible for returning blood from the abdominopelvic viscera and abdominal walls to the heart.
The inferior vena cava is fed by numerous smaller veins. The lumbar veins, for instance, drain the posterior abdominal wall, emptying both directly into the inferior vena cava and into the...
556

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相关实验视频

Updated: Jun 25, 2025

A Knowledge Graph Approach to Elucidate the Role of Organellar Pathways in Disease via Biomedical Reports
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BCSLinker:基于联合学习的静脉血栓塞栓症知识图的自动方法.

Fenghua Cai1, Jianfeng He1, Yunchuan Liu2

  • 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan, China.

Frontiers in medicine
|May 24, 2024
PubMed
概括

一个新的深度学习模型,BCSLinker,改进了从中国电子医疗记录中构建静脉血栓栓塞的知识图 (VTEKG). 这可以通过减少错误和冗余来提高静脉瘤的诊断,治疗和患者的自我护理.

关键词:
中国的电子医疗记录.深度学习是一种深度学习.联合实体和关系提取知识图表知识图表静脉血栓塞栓症是一种静脉血栓塞栓.

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科学领域:

  • 医疗信息学 医疗信息学
  • 人工智能在医学中的应用
  • 知识表示 知识表示

背景情况:

  • 静脉血栓栓塞 (VTE) 呈现出显著的发病率和死亡率,需要先进的知识管理.
  • 构建VTE知识图 (VTEKG) 的现有方法面临着错误传播和冗余信息的挑战.
  • 有效的VTEKG构建对于整合复杂的医学知识和分析实体关系至关重要.

研究的目的:

  • 开发一种新的深度学习模型,以从中国电子医疗记录中准确高效地构建VTEKG.
  • 解决当前VTEKG构建方法的局限性,特别是错误传播和冗余数据.
  • 为特定于VTE的问答系统创建一个结构化数据源.

主要方法:

  • 提出了基于深度学习的联合提取模型Biaffine Common-Sequence Self-Attention Linker (BCSLinker),一个基于深度学习的联合提取模型.
  • 使用Biaffine常见序列自我注意 (BCsSa) 模块同时提取实体和关系,减轻错误传播.
  • 采用多标签的交叉损失来减少冗余信息的影响.

主要成果:

  • 在使用VTE患者电子病历数据的BCSLinker上获得了86.9%的高F1得分.
  • 与其他联合实体和关系提取模型相比,证明了卓越的性能.
  • 成功开发了一个问答系统,利用构建的VTEKG.成功开发了一个问答系统.

结论:

  • 成功构建了一个更准确,更全面的VTEKG.G.
  • 该VTEKG为VTE诊断,评估和治疗提供了宝贵的参考资料.
  • 开发的系统支持临床决策和患者自我护理,提供了相当大的临床价值.