The present invention relates to a medical system for shape sensing by interacting with a shape sensing element (12) configured to perform a shape sensing measurement of an interventional device (14) and by interacting with an image data generation unit (28) for generating image data (21), said medical system comprising a shape sensing console (16) in communication with said shape sensing element (12) for generating measurement signals of said shape sensing measurement, a shape reconstruction unit (18) in communication with said shape sensing console for reconstructing a shape (19) of said shape sensing element based on said generated measurement signals, a receiving unit (22) for receiving a position and/or orientation of an apparatus (26, 26′) comprising said image data generation unit (28), a coordinate transformation unit (20) for registering said reconstructed shape (19) by representing said reconstructed shape (19) in a coordinate system based on said received orientation of said apparatus (26, 26′), and a convector unit (32) for connecting said shape sensing console (16) and/or said shape reconstruction unit (18) to said shape sensing element (12), said connector unit (32) being detachably connectable to a housing (30) of said apparatus (26, 26′).
