Optimized Positioning of ECG Electrodes for WSN Applications - Application and Multidisciplinary Aspects of Wireless Sensor Networks - page 199

I II III

aVR aVL aVF

V1 V2 V3

V4 V5 V6

1 2 3 1 2 3 1 2 t[s]

Fig. 9.13 Target ( black ) and principal component analysis (PCA) reconstructed ( red ) 12-lead
electrocardiograms (ECGs)

FRONT BACK

9 13 25

1

6 10 4 7 22 26 29

3

4 7 11 15 18 20 23 27 30

2

5 8 12 16 19 21 24 28 31

B C

EFGH I J

D

1-RIGHT ARM 2-LEFT ARM 3-LEFT LEG -> A

Fig. 9.14 Differential lead (DL) positions used by the Multivariate Linear Regression (MLR)
based reconstruction of the 12-lead electrocardiogram (ECG). The squares connected with lines
denote differential leads (DLs) 1, 2, and 3