A matrix array probe including a transducer array and integrated circuitry coupled to the transducer elements dissipates heat generated by the array and integrated circuitry through the cover of the transducer probe. A pump in the probe connector pumps fluid through a closed loop system including inbound outbound fluid conduits in the cable. The fluid conduits in the cable are separated by the cable electrical conductors for the probe. The heat transfer in the probe is done by a heat exchanger in the probe spaceframe or transducer stack backing block and may use a Peltier device. Additional cooling may be provided by metal to metal contact with a chiller in the ultrasound system.