Title : A novel photoplethysmography-based method for syndrome differentiation of zang-fu organs
Abstract:
The Photoplethysmography-(PPG)-based method for syndrome differentiation of Zang-Fu organs provides a new way to standardize and objectify traditional Chinese medicine (TCM) diagnosis. Traditional Zang-Fu organs syndrome differentiation relies on a comprehensive analysis of diagnostic data from the four examinations (inspection, listening and smelling, inquiry, and palpation), but suffers from significant diagnostic variabilities due to physicians' subjective feelings. This article analyzes the limitations of the objective Cunkou pulse diagnosis and explores the application and advantages of PPG technology in pulse wave acquisition and diagnostic objectification. On this basis, Professor Keda Li proposed a theoretical framework replacing the traditional "Five-Zang and Six-Fu organs" theory with the "Five-Zang and Five-Fu organs" theory to enhance diagnostic precision. The study demonstrates that PPG technology, by utilizing PPG sensors and frequency-domain signal processing methods, can accurately capture pulse waveforms and extract key parameters. Through the Fourier transform, the harmonics are extracted and analyzed. It accomplishes the quantitative diagnosis and standardization of zang-fu syndrome differentiation and establishes the correspondence between Zang-Fu and harmonic waves.
