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相关概念视频

Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

649
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
649
Instrumentation Amplifier01:25

Instrumentation Amplifier

607
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
607
Capillary Electrophoresis: Instrumentation01:20

Capillary Electrophoresis: Instrumentation

268
Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
268
Charging Conductors By Induction01:15

Charging Conductors By Induction

7.9K
The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
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Updated: Jul 24, 2025

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
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基于电荷诱导的单个位置心电图检测系统

Yi Yang1, Kun Xu1, Yu Li1

  • 1School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China.

Sensors (Basel, Switzerland)
|July 11, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的单电极心电图 (ECG) 系统,用于方便的医院外监测. 该系统使用电荷感应精确检测心脏活动,改进了便携式心电图技术.

关键词:
电脑电图检测 电脑电图检测充电感应感应是一种充电感应.一个电极一个电极.单一位置单一位置的位置.

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科学领域:

  • 生物医学工程 生物医学工程
  • 心血管技术的心血管技术
  • 医疗设备创新 医疗设备创新

背景情况:

  • 心血管疾病 (CVD) 发病率的增加需要先进的医院外心电图监测.
  • 目前的便携式心电图设备 (四肢和胸部导线) 需要多个电极和特定的间距,限制了用户的移动性和集成.
  • 需要更紧,更易于使用的ECG监测解决方案.

研究的目的:

  • 开发和验证使用电荷感应的单位置心电图系统,以简化医院外监测.
  • 为了减少便携式心电图装置的电极尺寸和间距要求.
  • 加强ECG技术在日常生活中的整合.

主要方法:

  • 使用基于人类心脏电生理学的COMSOL Multiphysics 5.4模拟的心电图波形.
  • 设计和开发了单电极心电图装置的硬件电路和主机计算机系统.
  • 进行静态和动态ECG监测实验以评估系统性能.

主要成果:

  • 单个电极系统成功检测出小电极直径 (<2厘米) 的心电图波形.
  • 静态和动态监测实验产生了高的心率相关系数 (分别为0.9698和0.9802).
  • 结果证明了系统的可靠性和数据准确性.

结论:

  • 基于电荷感应的拟议单位置心电图系统提供了一种可靠和准确的方法,用于医院外的心脏监测.
  • 这项技术显著改善了现有的多电极系统,只需要一个小电极.
  • 这些发现支持了集成和用户友好的便携式心电图监测解决方案的发展.