In November, 1988, we reported to the meeting of the 9th Japan Society for Laser Meidcine 1), which uses a balloon filled with a light scattering substance. We named. this method balloon laserthermia
We investigated the optical and the thermal properties of the substance. And then, using the balloon of a 30mm diameter sphere, filled with 0.25% fat emulsion (Intralipid 20% drops), we got good results by the investigation of the balloon laserthermia on transplanted Meth-A sarcoma, with the laser power of 20 watts.
However, if we use the another size of balloon, it seemed that the size was closely connected with not only the density of the light scattering solution but the laser power. Therefore, we investigated the relationship between the size of balloon, the density of the solution, and the laser power.
The results showed that the smaller size of the balloon needed the higher density of the solution, but the lower power of the laser.
