Detector device, dual energy CT system, and detection method using the system

摘要

The present disclosure discloses a detector device comprising a plurality of detector assemblies (21). Each detector assembly comprises at least one detection crystal units (22) having a first energy response and those (23) having a second energy response, which are both arranged along a first direction (B) at intervals, each detection crystal unit having a first/second energy response including at least one detection crystals having a first/second energy response arranged along a second direction (C). The at least one detection crystal units having a first energy response and the at least one detection crystal units having a second energy response are, at least partially, alternatively arranged along the first direction when viewed from an incidence direction of the X-ray. The present disclosure also discloses a dual energy CT system having the detector device and a CT detection method using this system.