An imaging system is disclosed that uses piezoelectric markers. The piezoelectric fields in combination with ultrasound reflections can be used to construct an image of an otherwise difficult to detect feature within a subjects body. In one embodiment, the invention includes a piezoelectric marker, including at least one piece of piezoelectric material, an ultrasound transducer connected to an ultrasound pulser and a receiver, a computer sequencing control connected to the receiver and the ultrasound pulser, a display connected to the computer sequencing control and electrodes connected to the computer sequencing control via amplification circuitry.
