相关实验视频

Updated: Jun 23, 2025

Using Retinal Imaging to Study Dementia

Using Retinal Imaging to Study Dementia

Published on: November 6, 2017

强大的动脉合规性估计与Katz的光聚体显微镜的碎形维度

Xiaoman Xing^1,2, Jingyuan Hong³, Jordi Alastruey³

¹School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Suzhou, China.

Frontiers in physiology

|June 25, 2024

概括

卡茨的光聚缩学 (PPG) 信号的碎形维度 (KFD) 为估计动脉合规性 (AC) 提供了一种耐噪方法. 这一新型指标显示了对心血管健康的持续,可穿戴监测的潜力.

科学领域:

生物医学工程生物医学工程
心血管生理学心血管生理学
信号处理信号处理

背景情况:

动脉顺应 (AC) 对于评估血管衰老和心血管疾病风险至关重要.
通过可穿戴设备进行持续的交流估计是可取的,但受到光多聚光学 (PPG) 信号中的噪声的挑战.
现有的PPG衍生动脉硬度指数容易受到噪音的影响,这限制了实际应用.

研究的目的:

引入和评估Katz的碎形维度 (KFD) 作为一个耐噪声指标,用于从PPG信号中估计动脉合规性 (AC).
评估KFD在噪音条件下与传统AC测量相比的性能,使用in silico和现实世界的数据.
探索KFD对心血管健康持续可穿戴监测的潜力.

主要方法:

从PPG信号开发了卡茨分形维度 (KFD) 作为一种新型的交流指标.
综合评估使用了4374个虚拟人类数据集,其信号与噪声比 (SNR) 不同.
在各种健康状况中与现实世界PPG测量进行验证.

主要成果:

在中,KFD与AC (r = 0.75) 呈现出强烈的相关性.
即使在15dBSNR的情况下,KFD也保持了高相关性 (r = 0.66),超过了其他PPG措施 (r = 0.41).
实体数据证实了in silico的发现,表明了KFD的稳定性和个性化AC估计的潜力.

结论:

源自PPG的KFD是一种有希望的,耐噪声的指标,用于持续监测动脉合规性.
KFD为可穿戴心血管健康评估提供了一种可靠,不引人注目的方法.
这种方法有可能显著推进血管衰老和疾病的非侵入性评估.

关键词:

卡茨的碎形维度是Katz的碎形维度.动脉的合规性动脉的合规性耐噪声的抗噪声的摄影复合体学摄影复合体学摄影复合体学一个单个站点的单个站点.

更多相关视频

Assessment of Vascular Function in Patients With Chronic Kidney Disease

Assessment of Vascular Function in Patients With Chronic Kidney Disease

Published on: June 16, 2014

Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression

Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression

Published on: December 10, 2014

相关概念视频

Assessment of blood pressure in brachial artery(two-step method)

Assessment of blood pressure in brachial artery(two-step method)

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...

Assessment of blood pressure in brachial artery(one-step method)

Assessment of blood pressure in brachial artery(one-step method)

This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:

Sites for measruring blood pressure

Sites for measruring blood pressure

Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement

Pulse

Pulse

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...