The present disclosure includes a method for providing real-time guidance to an interventional device coupled to an ultrasound imaging system operating in a first mode and a second mode. The method includes, in the first mode, stopping transmission of ultrasound signals from a transducer of the ultrasound imaging apparatus, and transmitting, via an acoustic sensor mounted on a head portion of an interventional device, an ultrasound signal that is then received by the transducer to generate a first image of a location of the head portion in a second mode, stopping transmitting ultrasound signals from the acoustic sensor, transmitting ultrasound signals via the transducer, and receiving echoes of the transmitted ultrasound signals to generate a second image of an object structure and combining the first image with the second image to derive a third image displaying and highlighting a relative location of the head portion in the object structure.
