使用目标光谱相机检测高血压:一项前性临床研究
Ryoko Uchida1, Eriko Hasumi2,3, Ying Chen1
1Department of Advanced Cardiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
准确的无袖血压 (BP) 监测现在可以使用光谱摄像头记录. 这项技术可以在几秒钟内以高精度检测高血压,为简化血压评估铺平了道路.
科学领域:
- 生物医学工程 生物医学工程
- 心血管研究研究心血管研究
- 医疗成像医学成像
背景情况:
- 高血压是导致过早死亡的主要原因,需要通过定期血压 (BP) 监测进行早期检测.
- 目前的血压监测方法通常需要袖子,突出需要先进,准确的无袖子血压装置.
- 脉冲过渡时间 (PTT) 是估计BP的关键参数,但其提取通常需要专门的设备.
研究的目的:
- 为了评估血压 (BP) 测量的准确性,从目标光谱摄像头获得.
- 评估使用光谱成像和机器学习用于非侵入性高血压检测的潜力.
- 用无袖技术确定快速BP评估的可行性.
主要方法:
- 215名成年人使用光谱摄像头 (640x480像素,150/秒) 捕获RGB波长数据,对他们的手掌和脸部进行了成像.
- 从视频录像中提取脉冲过渡时间 (PTT),将面部和手掌信号相关联.
- 一个机器学习模型分析了光谱数据,以对高血压进行分类 (静心血压≥130 mmHg或静心血压≥80 mmHg),根据CNAPmonitor500连续血压测量进行验证.
主要成果:
- 机器学习模型在30秒内实现了95.0%的准确性,在高血压和正常血压之间进行区分.
- 高精度 (90.3%) 即使在分析时间仅为5秒的时间内也保持不变.
- 心跳对心跳的分析允许从仅仅一秒钟的摄像头镜头或单一的心跳中确定高血压.
结论:
- 光谱摄像头成像与机器学习相结合,可实现准确和快速的高血压检测.
- 开发的方法为简化,无袖式血压监测提供了一个有希望的方法.
- 这项技术有可能显著提高早期发现心血管疾病风险的潜力.
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相关概念视频
Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Equipments Used To Measure Blood Pressure
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...
Measurement of Blood Pressure
