Abstract
A new 32P beta-ray applicator devised by us consists of a thin film of agar-agar, which, after dissolving a certain amount of 32P, is coagulated and cut into a shape conforming to the skin lesion to be treated.
The advantages of this method are as follows:
1. One can easily make an applicator with uniformly distributed radioactivity of any amount. As the radioactivity (μc/cm2) of each applicator can be easily obtained by the comparative measurement with G-M counter, the correct irradiated dose (μc·/cm2) will be calculated.
2. As this applicator is flexible and hardly torn, it can be attached closely to the affected skin. From our experiences its thickness of 4 to 10mg/cm2 is convenient for use.
3. As the agar-agar film is transparent, it can be attached precise to the affected part.
Six to ten hours will be needed for making this applicator.
