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. Each detector assembly comprises at least one detection crystal units having a first energy response and those having a second energy response, which are both arranged along a first direction 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. 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.

主权项

1. A detector device for a dual energy CT system, wherein the dual energy CT system comprises a scanning tunnel through which an object to be scanned enters/exits the dual energy CT system along a transporting direction, an X-ray source provided at a side of the scanning tunnel, and a gantry provided at an opposite side of the scanning tunnel and on which the detector device is mounted, and wherein the detector device comprises a plurality of detector assemblies, each detector assembly comprising:
at least one detection crystal units having a first energy response which are arranged along a first direction at intervals, each detection crystal unit having a first energy response including at least one detection crystals having a first energy response arranged along a second direction, wherein the first direction is parallel to the transporting direction, and the second direction is perpendicular to the first direction; and at least one detection crystal units having a second energy response which are arranged along the first direction at intervals, each detection crystal unit having a second energy response including at least one detection crystals having a second energy response arranged along the second direction, wherein the second energy is higher than the first energy; wherein 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.