A system includes an acoustic probe and an acoustic imaging machine connected to the acoustic probe. The acoustic probe has a substrate with first and second principal surfaces, at least one device insertion port comprising an opening passing through the substrate from the first principal surface to the second principal surface, and an array of acoustic transducer elements supported by the substrate and disposed around the at least one device insertion port. The acoustic imaging machine is configured to systematically vary the size and/or position of the active acoustic aperture of the ultrasound probe by providing transmit signals to selected acoustic transducer elements to cause the array of acoustic transducer elements to transmit an acoustic probe signal to an area of interest, and recording a feedback signal of the transmit signals from an acoustic receiver (610) provided at a distal end of an interventional device passed through the device insertion port into the area of interest. An active acoustic aperture having optimal acoustic performance in regard of the interventional device in a particular location within the area of interest may be found in this way.