To provide an enhanced customer service experience, various combinations of web searches, site-specific filtering tools and syndicated feed readers can be used to find relevant posts on the internet. A fluoroscopy recording is produced with the aid of the fluoroscopy apparatus, and a spatial position of the artificial landmark array at the time the fluoroscopy recording is produced is detected and stored. The pixels 1, 2, 16 are arranged into two groups, nominally group A and group B.