An ultrasound probe (106) having a set of functions is coupled to a portable ultrasound imaging device (100). A volume of interest is scanned e.g. in three-dimensions, using an ultrasound-imaging device coupled to a resource extension device (302) at a transmit power level capability to get ultrasound image data. The image data is processed using an ultrasound-imaging device processor and a resource extension device processor. An independent claim is also included for an ultrasound-imaging system configured to operate in a resource extended mode and a portable mode.