A scan head is described which permits movement of a scanning element such as a transducer or transducer array within the head. A position sensor is employed such as an inductive position sensor. Various embodiments allow for low-volume low-cost scan heads that can be used in applications such as medical imaging, industrial applications or other uses, and may be employed with ultrasound imaging transducers, arrays or other types of elements integrated into said scan head. Movement of the transducers or other elements in the scan head permit a wider operational field including to sweep a larger imaging region and/or to extend the effective operation of the unit into greater dimensions along one or more degrees of freedom.
