Abstract: A diagnostic imaging simulator is disclosed that includes a three-beam emitting mobile hand piece. The-mobile hand piece is moved around a reference surface that mimics an anatomical region of a patient. A detector identifies the position of the three beams on the surface and a location determining device determines the location of the mobile hand piece from those positions. A display then displays an image associated with the location of the mobile hand piece, which is preferably an image corresponding to that provided by a real imaging machine in a similar position.