Persistent guide wire identification

A system for supporting image-based navigation, the system comprising:

• an input interface for reviving one or more input images acquired by an X-ray imager whilst two or more medical devices are present, at the a same time or at different one or more times, in a field of view of the X-ray imager;
• an image identifier configured to identify the two or more medical devices based on image information in the one or more input images, the image identifier thereby capable of distinguishing between the two or more medical devices;
• a tagger, configured to associate respective tags with each of at least two of the two or more medical devices so identified;
• and
• a graphics display generator configured to display on a display device the one or more input images in a video feed, with the tags included;
• wherein at least one further input image is received at the input interface, and the graphics display generator is configured to display on the display device, only when the image identifier re-identifies in the at least one further input image at least one of the two or more medical devices, the at least one further input image as part of the video feed, thereby including a same tag as earlier associated by the tagger with the said at least one of the two or more medical devices.