In vivo experiments were performed to measure temperature elevations in prostatic tumors implanted in mice during
laser photothermal therapy using nanorods. Ti:Sapphire laser tuned at 800 nm irradiating the surface of the tumor
delivered an average laser power of 0.5 - 1.0 W, equivalent to a laser radiance of 1.3-2.6 W/cm<sup>2</sup>. The temperature
elevations measured by two thermocouples located at the center and bottom of the tumor have shown non-uniform tumor
temperature field, 10-30°C above the baseline temperature of 37°C. The experimental studies have demonstrated the
capability of confining laser energy in tumors by a very small amount of nanorod solution.