增加传感器通道:对于压力偏移的解决方案,这些偏移导致放射性动脉脉冲信号采集信号中的生理参数不准确
Chao Chen1, Zhendong Chen1, Hongmiin Luo2
1School of Computer Science and Engineering, Sun Yat-Sen University, Guangzhou, China.
Frontiers in bioengineering and biotechnology
|March 1, 2024
概括
多通道动脉脉冲信号,或3D脉冲图像 (3DPI),捕获空间和时间数据. 这项研究量化了3DPI的压力偏移,揭示了传感器放置如何影响准确性,并建议更多的通道可以改善辐射脉冲信号采集.
科学领域:
- 生物医学工程 生物医学工程
- 生理测量生理测量
- 心血管监测 心血管监测
背景情况:
- 脉冲波分析中的单通道传感器缺乏空间信息,导致脉冲感应模式不准确.
- 多通道动脉脉冲信号 (3D脉冲图像或3DPI) 提供辐射脉冲的空间和时间特征.
- 当使用有限的传感器通道时,压缩偏移显著影响了诸如潮峰值 (P2) 等生理参数的准确性.
研究的目的:
- 在多通道动脉脉冲信号中发现和量化压力偏移.
- 分析压力偏移和潮峰值时间 (T2) 之间的关系.
- 为了评估传感器放置对辐射脉冲信号采集准确性的影响.
主要方法:
- 使用数据采集系统捕获三维脉冲图像 (3DPI).
- 开发了一个"错误T2"度量来量化压力偏移.
- 分析了辐射脉冲信号中传感器元素距离和T2误差之间的相关性.
主要成果:
- 观察到压力偏移分布中的"中心低和外围高"模式.
- 证明误差T2随着距离动脉的距离而增加,特别是在辐射流末端.
- 从中心传感元件的距离每增加1毫米就有4.87%的辐射误差T2的升级,而超出3.42毫米的距离急剧增加.
结论:
- 增加传感器通道有效地克服了辐射脉冲信号采集中的压力偏移.
- 来自多通道系统的准确空间信息对于可靠的生理参数测量至关重要.
- 了解和减轻压力偏移可以提高脉冲波分析的诊断价值.
相关概念视频
Assessment of radial pulse
824
Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
824
Equipments Used To Measure Blood Pressure
969
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
969
Pulse
510
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
The pulse serves as a clinical...
510
Assessment of apical radial pulse
742
Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
742
Errors occurring during blood pressure monitoring
723
Blood pressure monitoring is a crucial clinical procedure in diagnosing and managing various cardiovascular conditions. Despite its significance, the accuracy of blood pressure measurements can be compromised by multiple factors, potentially leading to either falsely high or low readings. These inaccuracies are critical as they can significantly impact patient care. So, it is vital to understand these challenges deeply and adopt strategic approaches to minimize errors.
Several factors...
Several factors...
723
Special considerations while measuring pulse
578
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
578


