Calibration-free estimation algorithm for cuffless continuous blood pressure measurement based on ultrasonic devices

Special Topic: Flexible Electronics and Micro/Nanomanufacturing

Open Access

Figure 3

Measurement of vessel diameter and feature selection results. (A) Bland-Altman diagram of systolic and diastolic vessel diameter error (n=22). (B) Diameter measurement error across different individuals (n=20). (C) Pearson correlation matrix, where the parameters are SBP, DBP, HR, T₁, T₂, Tac, Tcd, H₁, H₂, K₀, K₁, K₂, MD, SD, WE, from top to bottom and left to right.

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