AI Article Synopsis
- - The study focuses on a new mathematical approach called a three-dimensional pulse image (3DPI) to analyze heartbeats, moving beyond the traditional one-dimensional pulse wave.
- - Researchers used Fourier series to evaluate the spatial and temporal features of 3DPIs, generating a sequence of ratios from 70 heartbeats sampled from 24 participants.
- - Findings indicate significant differences in various types of 3DPIs when looking at harmonic ratios, suggesting that this method can enhance our understanding of pulse characteristics, particularly in the context of Chinese medicine.
Article Abstract
In this article, a three-dimensional pulse image (3DPI) instead of a one-dimensional temporal pulse wave is studied to elucidate its spatiotemporal characteristics. To check the spatial and temporal properties of 3DPI, adopted is Fourier series, in which a ratio () is defined as one amplitude divided by the sum of the first three amplitudes of harmonics. A ratio sequence is constituted from 70 to 90 ratios in a heartbeat with 70-90 3DPIs by sampling. Twenty-four subjects (14 males and 10 females with age of 22.2 ± 3.7 years, 20.4 ± 1.4 BMI, and 112.1 ± 4.7 mmHg systolic blood pressure) are involved in this research. There are significant statistical differences in the groups of the normal, taut, and slippery 3DPIs by the first harmonic ratio average ( ) and ratio difference (Δ ) produced from the ratio sequence. The proposed method of this study gives us a novel viewpoint to clarify the spatiotemporal characteristics of pulse images, which can translate and quantize the pulse feeling in Chinese medicine texts.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6900951 | PMC |
| http://dx.doi.org/10.1155/2019/5734018 | DOI Listing |
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