Abstract: A combined transmission/emission tomography apparatus for generation of tomographic slice images of an examination subject (preferably of a patient), has a supporting structure composed of a stationary stator and a rotor that rotates in operation, with at least one radiation-emitting device and at least one radiation-detecting device mounted on the rotor. The at least one radiation-emitting device and the at least one radiation-detecting device are primary components, and the apparatus has at least one associated supply component for one or more of the primary components. In the rotor all primary components are arranged in one rotation plane and all supply components are arranged outside of the rotation plane.

Abstract: A detection arrangement is for modular use for a combined transmission/emission tomography unit, for measuring transmission x-radiation and emission ?-radiation inside a detector. The detection arrangement includes at least three absorption layers of different thickness, arranged one above another in the radiation direction, for detecting absorption events in which case all of the at least three absorption layers consist of a single material. Each absorption layer is connected to a measuring chip which can transmit the measured values of location x, time t and energy E of detected absorption events to a common evaluation unit. The evaluation unit can undertake the breakdown into CT, SPECT and PET signals from the transmitted measured values of the absorption event, and the absorption layers are subdivided into a multiplicity of detection elements.

Abstract: A detection arrangement is for modular use for a combined transmission/emission tomography unit, for measuring transmission x-radiation and emission ?-radiation inside a detector. The detection arrangement includes at least three absorption layers of different thickness, arranged one above another in the radiation direction, for detecting absorption events in which case all of the at least three absorption layers consist of a single material. Each absorption layer is connected to a measuring chip which can transmit the measured values of location x, time t and energy E of detected absorption events to a common evaluation unit. The evaluation unit can undertake the breakdown into CT, SPECT and PET signals from the transmitted measured values of the absorption event, and the absorption layers are subdivided into a multiplicity of detection elements.