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Table 4 Quantification of electric field strength for needle electrode models – calculated Ett min , Ett max and E max parameters.

From: Analytical and numerical quantification and comparison of the local electric field in the tissue for different electrode configurations

Needle electrode configuration U/d = 1.15 V/cm U/d = 1300 V/cm
  Target tissue
Ettmax(V/cm)
Target tissue
Ettmin(V/cm)
Entire tissue
Emax(V/cm)
Target tissue
Ettmax(V/cm)
Target tissue
Ettmin(V/cm)
Entire tissue
Emax(V/cm)
2 (Fig. 4a) 0.804 0.527 6.618 905.4 591.7 7450.3
4 (Fig. 4b) 0.824 0.779 5.829 928.7 876.9 6562.5
6 (Fig. 4c) 1.049 0.911 5.166 1180.9 1025.2 5816.6
6 (Fig. 4d) 0.822 0.778 5.794 925.4 875.9 6523.1
6 (Fig. 4e) 1.064 0.835 7.443 1197.9 940.1 8379.6
7 (Fig. 4f) 0.21 ~0 5.17 236.4 1.038 5820.8
7 (Fig. 4g) 8.1 0.84 8.1 9119.2 945.7 9119.2
  1. The results for models shown in Figs. 4a – 4e were calculated for applied voltage U = 1 V ( d = 5 3  mm MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaacqWGKbazcqGH9aqpcqaI1aqndaGcaaqaaiabiodaZaWcbeaakiabbccaGiabb2gaTjabb2gaTbaa@349D@ ) and for models shown in Figs. 4f – 4g for applied voltage U = 0.575 V (d = l = 5 mm) giving U/d = 1.15 V/cm. Furthermore, by scaling the results we also calculated the parameters Ett min , Ett max and E max for U/d = 1300 V/cm.