Preparation and data reading method of combined Fricke gel dosimeter

The invention discloses a preparation and data reading method of a combined type Fricke gel dosimeter. The combined type Fricke gel dosimeter is used for measuring spatial distribution of multi-dose components in boron neutron capture therapy, and comprises a standard gel dosimeter, a heavy hydrogel dosimeter, a nitrogen-containing gel dosimeter and a boron-containing gel dosimeter. The preparation method of the gel dosimeter comprises the following steps: 1) diluting dilute sulphuric acid with ultrapure water; 2) adding ferrous ions and a chemical chelating agent, heating the solution, then adding a tissue equivalent material, and then fully stirring; and 3) pouring the fully stirred solution into an acrylic hollow mold, cooling, sealing, and refrigerating. According to the invention, measurement of various radiation components induced by therapeutic neutron beams and spatial distribution of the radiation components can be realized, so that radiation dose rate analysis of a target region and normal tissues t