Gamma ray focusing radiation unit
A technology of focused irradiation and gamma ray, which is applied in the field of gamma ray focused irradiation unit, can solve the problems that affect the local control rate of tumor treatment, the accuracy of treatment, reduce the efficiency of user treatment plan, and the poor uniformity of dose in tumor target area, etc. Achieve the effects of reducing manufacturing cost and processing difficulty, easy adjustment, and uniform dose distribution
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[0018] according to figure 1 As shown, in the radiation unit, the source body 5 is installed in the radiation protection body 8, and a group of Co60 radioactive sources 6 are installed on the source body 5, and these Co60 radioactive sources are all aimed at a common focal point O; the collimator 4 and The inner cavities of the source body 5 are connected, and several groups of basic collimators 7 are installed on the collimator body 4 . The rules are the same. figure 2 and image 3 It is an arrangement scheme of two kinds of radioactive sources. The source body 5 is composed of two symmetrical fan-shaped shells, on which eight radioactive sources are arranged and divided into two groups. They are symmetrically distributed on the source body 5. Each group emits The longitude range occupied by the source in space is 60 degrees, and the longitude difference between adjacent radioactive sources is 20 degrees. Figure 4 and Figure 5 With figure 2 , image 3 The arrangemen...
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