A fluid coolant system for of a medical imaging apparatus , comprising: a gantry forming a patient tunnel; a cooling apparatus , coupled to and external the gantry , having a coolant supply for supplying fluid coolant to the gantry , and a coolant return for returning the coolant to the cooling apparatus ; a detector electronic assembly (DEA) within the gantry , coupled to the cooling apparatus , having: a housing ; detector elements in the housing , for detecting incident photons of electromagnetic radiation originating outside of the housing ; other electronic components in the housing ; a fluid cooled, first chill plate thermally conductively coupled to the detector elements , for cooling the detector elements , the first chill plate having a first inlet for receiving the coolant from the coolant supply and a first outlet for discharging the coolant to the coolant return; and a fluid cooled, second chill plate thermally conductively coupled to the other electronic components for cooling the other electronic components , the second chill plate having a second inlet for receiving the coolant from the coolant supply and a second outlet for discharging the coolant to the coolant return; the fluid coolant system, further comprising: the detector elements having detector element components projecting away therefrom, defining a first surface profile; the first chill plate in thermally conductive, direct contact with at least a portion of the first surface profile of the detector element components; at least one of the other electronic components defining a second surface profile; and the second chill plate in thermally conductive, direct contact with at least a portion of the second surface profile of the at least one of the other electronic components . a gantry forming a patient tunnel; a cooling apparatus , coupled to and external the gantry , having a coolant supply for supplying fluid coolant to the gantry , and a coolant return for returning the coolant to the cooling apparatus ; a detector electronic assembly (DEA) within the gantry , coupled to the cooling apparatus , having: a housing ; detector elements in the housing , for detecting incident photons of electromagnetic radiation originating outside of the housing ; other electronic components in the housing ; a fluid cooled, first chill plate thermally conductively coupled to the detector elements , for cooling the detector elements , the first chill plate having a first inlet for receiving the coolant from the coolant supply and a first outlet for discharging the coolant to the coolant return; and a housing ; detector elements in the housing , for detecting incident photons of electromagnetic radiation originating outside of the housing ; other electronic components in the housing ; a fluid cooled, first chill plate thermally conductively coupled to the detector elements , for cooling the detector elements , the first chill plate having a first inlet for receiving the coolant from the coolant supply and a first outlet for discharging the coolant to the coolant return; and the detector elements having detector element components projecting away therefrom, defining a first surface profile; the first chill plate in thermally conductive, direct contact with at least a portion of the first surface profile of the detector element components; at least one of the other electronic components defining a second surface profile; and the second chill plate in thermally conductive, direct contact with at least a portion of the second surface profile of the at least one of the other electronic components . <EOS>