Fig. 9

Setup for phantom gel experiment: a diagram of the catheter and thermocouples holder; b the dimensions of the holes and the relative position for the catheter and thermocouples: the larger hole with radius of 1.5 mm was for the catheter and the TC₀ (the blue circle) located on the surface of the catheter, the small holes were for the thermocouples; c, d a picture of the phantom into which thermocouples and catheter were inserted: c side view, the thermocouple 3 and 4 were on the back of the tube; d top view, the thermocouple 1 was shielded by the thermocouple 2. The positive and negative electrodes were outlined with a red and blue rectangle, respectively