Plots of θ/(sin(γ − θ)) as a function of nIAB0L/(EIA)total. Here (EIA)total represents the summation in the denominator of Eq. 5. Experimental results are shown compared to model predictions. Catheters were tested at 3T, L equal to 4, 5, and 6 cm, and I equal to ±100, ± 200, ± 300, and ± 600 mA. (a) Plot for catheter with thermocouple (R2 = 0.91). (b) Plot for catheter without thermocouple (R2 = 0.86).