The invention generally relates to systems and methods for constructing an image of a body structure. In certain embodiments, methods of the invention involve externally imaging a body structure within the patient using a first imaging device. The methods also involve internally imaging the body structure within the patient using a second imaging device. The second imaging device includes a radiopaque label co-located with an image collector of the second imaging device. Additionally, methods of the invention involve combining external imaging data and internal imaging data to produce an image of the body structure. The label on the second imaging device facilitates alignment of the external imaging data and the internal imaging data.
