JPH0193055U

JPH0193055U -

Info

Publication number: JPH0193055U
Application number: JP18768587U
Authority: JP
Priority date: 1987-12-11
Filing date: 1987-12-11
Publication date: 1989-06-19

Description

[Brief explanation of drawings]

第１図はこの考案の実施例による電子線照射装
置の電子線平坦化装置を示す概要図、第２図は第
２散乱体の支持構造を示すもので、ａは同正面図
、ｂは同平面図、第３図は装置本体の電子線照射
端面部の断面図、第４図は電子線照射装置の正面
図、第５図は従来装置の電子線平坦化装置を示す
概要図、第６図は第２散乱体の種々の形状を示す
正面図と平面図、第７図は患部に照射された電子
線エネルギの線量分布図、第８図は患部に対する
電子線の散乱説明図である。１は装置本体、４は第１散乱体、５は第２散乱
体。なお、図中、同一符号は同一、又は相当部分
を示す。 Fig. 1 is a schematic diagram showing an electron beam flattening device of an electron beam irradiation device according to an embodiment of the invention, and Fig. 2 shows a support structure for a second scatterer, where a is a front view of the same and b is a same diagram. 3 is a sectional view of the electron beam irradiation end face of the main body of the device, FIG. 4 is a front view of the electron beam irradiation device, FIG. 5 is a schematic diagram showing a conventional electron beam flattening device, and FIG. The figures are front views and plan views showing various shapes of the second scatterer, FIG. 7 is a dose distribution diagram of the electron beam energy irradiated to the affected area, and FIG. 8 is an explanatory diagram of scattering of the electron beam to the affected area. 1 is the device main body, 4 is a first scatterer, and 5 is a second scatterer. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Claims for Utility Model Registration] (1) Electron beam irradiation having a first scatterer that diffuses the dose distribution of the irradiated electron beam and a second scatterer that flattens the dose distribution diffused by the first scatterer. An electron beam irradiation apparatus, characterized in that the apparatus main body is provided with a scatterer support section that supports the second scatterer in a detachable manner with respect to the apparatus main body. (2) The electron beam irradiation device according to claim (1), wherein the second scatterer has a conical shape. (3) The electron beam irradiation device according to claim 1, wherein the second scatterer is constructed by concentrically stacking disks having different diameters. (4) The electron beam irradiation device according to claim 1, wherein the second scatterer is constructed by combining rings having different diameters in a circular shape.