1999 Volume 14 Issue 2 Pages 41-45
The purpose of this study was to identify the difference in the temperature rises at the surface of metal and bone in water after ultrasonic irradiation. An ultrasound head was put into a plastic tube and fixed upright by a stand. Metallic and bony plate were used as the experimental materials. These plates were hung horizontally in a tube filled with degassed water (100 cc). Ultrasound was irradiated at 0.5, 1.0 and 1.5 W/cm2 in this study, and thermistors were used to measure the temperature at the frontal (A) and posterior (B) surfaces of the experimental materials and in the water. The temperature rises at high wattage were higher than low at wattage in both materials. The temperature rises at A of the bone plate were twice as high as those of metal at each of the intensities.
