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Measurements of Local Instantaneous Convective Heat Transfer in a Pipe - Single and Two-phase Flow
Published on: April 30, 2018
Heat transfer analysis for peripheral blood flow measurement system
Koji Nagata1, Hideharu Hattori, Nobuhiko Sato
1Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan. koji.nagata.bt@hitachi.com
The Review of Scientific Instruments
|July 2, 2009
Summary
This study introduces a novel system for measuring peripheral blood flow volume using skin temperature changes. The method accurately estimates blood flow, aiding in the early detection and management of circulatory and metabolic disorders.
Area of Science:
- Biomedical Engineering
- Physiology
- Medical Devices
Background:
- Peripheral blood flow is critical for detecting circulatory and metabolic diseases.
- Accurate and convenient blood flow measurement is needed for disease prevention and management.
Purpose of the Study:
- To develop a convenient system for measuring peripheral blood flow volume, specifically in fingertips.
- To establish a measurement model based on heat transfer characteristics and skin temperature response.
Main Methods:
- Developed a blood flow measurement system utilizing transition response analysis of skin surface temperature.
- Evaluated the system using an artificial finger under varying ambient and internal fluid temperatures.
- Validated the system's performance against a laser Doppler blood flow meter on real human fingers.
Main Results:
- The developed system accurately estimates peripheral blood flow volume.
- Measurement accuracy is maintained irrespective of ambient or internal fluid temperature variations.
- Results from real finger testing showed strong correlation with established laser Doppler methods.
Conclusions:
- The proposed heat transfer-based method offers a convenient and reliable approach for peripheral blood flow volume measurement.
- This technology has potential applications in the early diagnosis and monitoring of conditions affecting peripheral circulation.
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