Devices, systems, and methods for imaging within a body lumen

Various embodiments are generally directed to a flexible elongate member (e.g., endoscopic accessory tool) positionable into and/or through selected anatomies, such as by generating images to position components of a flexible elongate member or to localize anatomic features, for instance. Some embodiments are directed to generating images with a plurality of imaging techniques to localize anatomic features and/or components of a flexible elongate member for one or more of inspection, orientation, and/or facilitating access to body passageways or lumens.