Embodiments of the present invention are to simultaneously achieve high counting speed and precision of an energy spectrum. Disclosed in the present disclosure are a tomography apparatus including dual mode pixels, a control method thereof, and a computer program product. According to the present disclosure, the tomography apparatus comprises: an X-ray detecting unit including a plurality of dual mode pixels and detecting radiation passing through an object； and at least one processor for obtaining scan data from the X-ray detecting unit and controlling the plurality of dual mode pixels to operate one of a first mode and a second mode.개시된 실시예들은 빠른 계수 속도와 에너지 스펙트럼의 정밀도를 동시에 달성하기 위한 것이다. 본 개시에서는 듀얼 모드 화소를 포함하는 단층 촬영 장치, 그 제어 방법, 및 컴퓨터 프로그램 제품이 개시된다.
