Collimator module, medical apparatus, and method of making collimator module

A radiation detection apparatus comprising a plurality of collimator modules (1) disposed on a side of radiation entrance of a detector (542),

• each collimator module (1) comprising a plurality of collimator plate sets (2) lined up side by side in a channel direction (CH), wherein
• each collimator plate set (2) comprises:
• a first collimator plate (3);
• a second collimator plate (4);
• and
• a joint layer (5) disposed between said first collimator plate (3) and said second collimator plate (4) for joining said first collimator plate (3) and said second collimator plate (4) together, and
• said plurality of collimator plate sets (2) are lined up side by side in said channel direction (CH) with an air layer (20) intervening between any adjacent two of said plurality of collimator plate sets (2).

A method of making a collimator module (1) for collimation of X-rays comprising a plurality of collimator plate sets (2), comprising:

• making said plurality of collimator plate sets (2), each collimator plate set (2) comprising:
• a first collimator plate (3);
• a second collimator plate (4);
• and a joint layer (5) disposed between said first collimator plate (3) and said second collimator plate (4) for joining said first collimator plate (3) and said second collimator plate (4) together, and
• inserting said plurality of collimator plate sets (2) into slots (6b, 7b) in brackets (6, 7) with an air layer (20) intervening between any adjacent two of said plurality of collimator plate sets (2).