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Table 1 Values of the E-field measured near the distal tip of various leads with large probe (no pulse generator connected)

From: In-vitro mapping of E-fields induced near pacemaker leads by simulated MR gradient fields

Lead

E-ratio

(1 mm from distal tip) large probe

E-width (mm)

E-field at probe tip (V/m)

Simulated lead (insulated wire)

3.6

2.5

0.13

Active fixation tip

15.3

7.4

0.54

Tined Tip

18.7

3.2

0.65

  1. Note: See the measurement uncertainty issues" section and the "Alteration of intended therapy by magnetically-induced E-fields" section.