a detector comprising a plurality of pixels, each pixel in the plurality of pixels being switchable between a floating mode and a detection mode, wherein each pixel in the plurality of pixels is configured to detect incident x-ray and/or gamma ray radiation when in the detection mode;

a control unit coupled to the detector, configured to:

during a first temporal frame, configure a first subset of pixels in the plurality of pixels to the floating mode and a second subset of pixels in the plurality of pixels to the detection mode; and

during a second temporal frame, configure a third subset of pixels in the plurality of pixels to the floating mode and a fourth subset of pixels in the plurality of pixels to the detection mode.