PROBLEM TO BE SOLVED: To provide a method for manufacturing collimator modules for multirow X-ray detectors capable of removing scattered rays in a channel direction and a slice direction and being easily manufactured.SOLUTION: The method for manufacturing collimator modules in which wall plates having X-ray absorbability are formed into a grid shape in the channel direction and the slice direction in a multirow X-ray detector of an X-ray CT apparatus is provided. The method for manufacturing collimator modules includes the steps of: superposing and sticking, in the channel direction, a plurality of first X-ray absorption members, the channel direction of which is defined as the plate thickness direction, that have such a plate shape that both plate surfaces are substantially parallel to the irradiation direction of X-ray beams, that are formed with, on one plate surface, a plurality of recesses extending along the irradiation direction of the X-ray beams and removing end portions that close, in the irradiation direction of the X-ray beams, spaces corresponding to the recesses in the plurality of superposed first X-ray absorption members.COPYRIGHT: (C)2014,JPO&INPIT【課題】チャネル方向およびスライス方向の散乱線除去が可能であり、容易に製作できる多列X線検出器用のコリメータモジュールの製造方法を提供する。【解決手段】X線吸収性を有する壁板がX線CT装置の多列X線検出器におけるチャネル方向およびスライス方向に格子状に形成されるコリメータモジュールの製造方法であって、チャネル方向を板厚方向とし、両方の板面がX線ビームの照射方向と実質的に平行である板形状を有しており、一方の前記板面に、前記X線ビームの照射方向に沿って延びている複数の凹部が形成されている第1のX線吸収部材を、チャネル方向に複数積層して接着する工程と、前記積層された複数の第1のX線吸収部材における前記凹部に対応する空間を前記X線ビームの照射方向で塞いでいる端部を除去する工程とを有する。【選択図】図9
