1. System for registering a first image with a second image, the system comprising: a first medical positioning system for detecting a first position and orientation of the body of a patient, said first medical positioning system being associated with and coupled with a first imager, said first imager acquiring at least one image from said body, said first imager producing said first image by associating said at least one image with said first position and orientation; a second medical positioning system for detecting a second position and orientation of said body, said second medical positioning system being associated with and coupled with a second imager, said second imager acquiring said second image and associating said second image with said second position and orientation; and a registering module coupled with said second imager and with said second medical positioning system, said registering module registering said first image with said second image, according to said first position and orientation and said second position and orientation.