Table 5.
Calculated values of Uc and corresponding Ettmin, Ettmax and Emax for needle electrodes.
| Needle electrode Configuration | Target tissue Ettmax(V/cm) |
Target tissue Ettmin(V/cm) |
Entire tissue Emax(V/cm) |
Needed voltage on the electrodes-Uc (V) |
| 2 (Fig. 4a) | 1983.3 | U/d = 1300 | 16325.0 | 2466.8 |
| 4 (Fig. 4b) | 1376.8 | U/d = 1300 | 9727.4 | 1668.8 |
| 6 (Fig. 4c) | 1496.9 | U/d = 1300 | 7371.9 | 1427.0 |
| 6 (Fig. 4d) | 1373.2 | U/d = 1300 | 9625 | 1670.0 |
| 6 (Fig. 4f) | 1653.7 | U/d = 1300 | 11558.7 | 1557.0 |
| 7 (Fig. 4f) * | / | / | / | / |
| 7 (Fig. 4g) | 12536 | U/d = 1300 | 12536 | 889.88 |
*With this specific configuration of polarities (Fig. 4f) we can not achieve Etmin = U/d (Etmin~0), since the electric field intensity inside the target tissue is almost zero (Etmin~0) and therefore is this configuration suitable only in a combination with the configuration as shown in Fig. 4g.