COLLIMATOR MODULE, RADIATION DETECTOR HAVING COLLIMATOR MODULE, RADIOLOGICAL IMAGING APPARATUS HAVING COLLIMATOR MODULE, AND CONTROL METHOD OF RADIOLOGICAL IMAGING APPARATUS

摘要

A collimator module which may be disposed in a radiation detector of a radiological imaging apparatus using the collimator module may include a first collimator having a plurality of openings, through which radiation having passed through an object passes, and a second collimator located below the first collimator and having a plurality of openings, through which radiation having passed through the first collimator passes. The first collimator or the second collimator is designed so as to be movable or rotatable relative to the second collimator or the first collimator. Through movement of the first collimator or the second collimator, the size of a passage region that allows radiation having passed through the object to pass through the first collimator or the second collimator is adjustable.