Passage: additional information which is not visible in the fluoroscopic image. Some software available provides landmarks automatically, more can be added manually be the surgeon or a qualified technician. One example is the placement of a fenestrated stentgraft to treat an abdominal aortic aneurysm. The ostia of the renal arteries can be circled on the 3D image and then overlaid on the live fluorscopy. As the marking has been done in 3D, it will update with any change of the fluoroscopy angulation to match the current view.

Question: Who can manually add landmarks to the software?
surgeon or a qualified technician