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Dose field distribution measuring plate
The spherical mold is a spherical glass spherical mould with a diameter of 160mm based on the technical index of AAPM REPORT NO.54 of the American physicist Association (fifty-fourth). It is one of the testing equipment for the dosimetric performance of gamma knife treatment equipment. The center can be inserted into a plate with a thickness of 10mm, and the different inserts can be inserted into 0.015cc, 0.125cc ionization chamber and semiconductor detector respectively, as shown in the following diagram.
Ionization chamber plugged plate
The installation diagram of the ball die on the bracket