1. A method for registering an anatomical structure using at least one marker attached to the anatomical structure, comprising: obtaining a three-dimensional model of the structure and the at least one marker via an imaging method, the at least one marker attached to the anatomical structure at least while the structure is imaged; obtaining at least two two-dimensional recordings of the structure and the at least one marker from different angles; and ascertaining a spatial position and location of the three-dimensional model or a position and location of the three-dimensional model in a patient coordinate system based on a matching method that matches the at least one marker in the three-dimensional model with an ascertained position of the at least one marker in the at least two two-dimensional mappings such that the three-dimensional model of the anatomical structure matches the anatomical structure.