Method for assembling an adjustable collimator for spatially fractionated radiation therapy

A method for assembling an adjustable collimator for spatially fractionated radiation therapy, comprising the following steps:

• step S1:
• counting widths of each radiation area and spacing between the radiation areas;
• step S2:
• calculating a number of penetrating sheets that can transmit rays, stacked to form penetration sections, with a thickness of each penetration section corresponding to the width of each radiation area, and calculating a number of shielding sheets that can block rays, stacked to form shielding sections, with a thickness of each shielding section corresponding to the spacing between radiation areas;
• step S3:
• sequentially stacking the penetration sections and the shielding sections to form a collimation module, with shielding sections on opposite sides of the collimation module;
• and
• step S4:
• compressing the collimation module from the opposite sides to eliminate gaps between the penetration sections, ensuring that a range of rays transmitted through the penetration sections is accurate and reliable, and that a spacing between radiation ranges is precise and reliable, wherein
• the step S3 further comprises installing the collimation module using a fixed structure with positioning grooves, where the positioning grooves have a same width as that of the penetrating sheets, and the width of the penetrating sheets is the same as that of the shielding sheets, one end of the positioning grooves has a positioning structure, with an end face of one shielding section of the collimation module resting against the positioning structure;
• followed by alternating stacking the penetration sections and the shielding sections, with a last stacked section in the positioning groove being one of the shielding sections.