A targeting device defines a direction of approach to a subsurface target
under guidance of imaging equipment such as a computer tomograph or a
magnetic resonance imaging machine. The targeting device is positioned
relative to the target in such a way that the optimal direction of
approach avoiding vital internal structures can be selected by reference
to the images displayed on the imagine equipment. The device projects a
visible light beam, such as a laser beam, on a region of a patient,
indicating the point of entry and the angle of approach to the subsurface
target.
