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Table 1 Positioning errors for precordial electrodes

From: Telemedicine supported by Augmented Reality: an interactive guide for untrained people in performing an ECG test

 

Precordial lead

Test

V1

V2

V3

V4

V5

V6

Mannequin

Average error [cm]

0.30

0.18

0.23

0.24

0.22

0.27

± SD of the error [cm]

± 0.10

± 0.10

± 0.13

± 0.19

± 0.11

± 0.41

 

Max error [cm]

0.45

0.40

0.45

0.54

0.41

1.42

Patient

Average error [cm]

0.40

0.27

0.44

0.46

0.49

0.69

± SD of the error [cm]

± 0.07

± 0.20

± 0.20

± 0.22

± 0.18

± 0.28

 

Max error [cm]

0.50

0.73

0.78

0.81

0.79

1.56

  1. Average, standard deviation and maximum of the displacement errors done by the ten users of the developed AR application in placing precordial electrodes (V1-V6) during the tests on mannequin and real patient. All data are expressed in centimeters. The displacement errors were computed as the square root of the sum of the square of the three Cartesian components (x, y, and z) of the displacement vector.