| 摘要 |
This invention is a device for collimation of ionizing radiation when treating tumors and similar in the human body. The purpose of the invention is to achieve the function of a device replacing the manual procedure of today in many treatment cases. The aim is also to achieve a device which is a less expensive alternative to the multileaf collimators used today. The most important function of the device is that 4 collimator blocks are used as final collimator. Each of these blocks is used to individually "cut off" a corner in the square radiation area shaped by the pre-collimator. The "cutting off" can be applied for various sizes of the squares as well as various angles.
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