A CT system includes a gantry having an opening for receiving an object to be scanned, an x-ray tube attached to the gantry, and a detector assembly. The detector assembly is positioned to receive x-rays that pass through the object and includes a light-sealed enclosure formed by at least first and second rails, a back support, and a light seal structure, and a plurality of liquid-cooled modules positioned in the enclosure. Each module includes a digital cable that passes from inside the enclosure, and each module is configured to convert the x-rays to a digital signal and output the signal via a digital cable.
