The present disclosure provides a system for localizing the position of an endovascular probe and collecting high-resolution images of the anatomy surrounding the probe. In particular, a switchable endovascular imaging antenna/probe and related devices are disclosed, which are conveniently switchable between a configuration that allows the localization with high precision of the distal tip of an endovascular probe, and another configuration that allows imaging in the locality of the probe tip. Embodiments are also disclosed capable of delivering ablation therapy.
