A system and method are disclosed for allowing the user to change the
patient table position or x-ray detector position during an angiographic
roadmapping procedure while still displaying a properly registered
roadmap display by adapting the mask image to the new position. A system
and method are further disclosed for allowing the user to change the
field of view size (i.e., zoom factor) of the x-ray detector during an
angiographic roadmapping procedure by matching the size of the existing
mask to the live image.