Abstract: A method for displaying interactively a three dimensional spatial relationship between one or more real-time ultrasound image of tissue and one or more reference images of that tissue. A reference image is produced by obtaining reference image data through a probe and obtaining positional data corresponding to the reference image data by a spatial locater. Real-time images are produced by obtaining real-time image data through an ultrasound probe and obtaining positional data corresponding to the real-time image data through a spatial locater. The reference image data, the reference positional data, the real-time image data and the real-time image positional data are transmitted to a processing and storage means where independent data representing spatial relationships between the real-time image data and the reference image data are generated.

Abstract: A portable cuspidor includes a spittle container, a removable funnel section and a cap. A reservoir cap may be used for the storage of tobacco or the like. The removable funnel section is partially suspended within the container by frictionally engaging the inside surface of the spittle container and protruding beyond the periphery of said spittle container remaining within the profile of spittle container providing a streamline cuspidor which is easily portable and which may be placed within the user's pocket. The cap nestles against the outside surface of spittle container for enclosing the interior of spittle container and restricting the outflow of spittle from the spittle container and funnel section.