An ultrasound imaging system (102) includes an ultrasound sub-system (104) with at least a transducer array (112), and an ultrasound resource pool (106). The ultrasound sub-system and the ultrasound resource pool are separate entities. The ultrasound resource pool provides temporary access to ultrasound processing resources of the ultrasound resource pool on an on-demand basis, based on an identified performance mode of the ultrasound sub-system for a scan.