You've seen X-Rays highlight 'solid' objects in the human body- skeletal bones, surgical instruments accidentally left in people's bodies during surgery...Oops.
You also might know that MRI's highlight the 'soft tissue' of the human body, but are not really good at locating 'hard' objects.
And although each do their jobs very well, they each are not good for "locating targets and for monitoring operations."
Integrating the two would be a profoundly huge help in conducting surgeries, but doing that has been a logistical nightmare until now. An article in Physics Today reports how Stanford University has combined the two to begin performing a myriad of procedures to exploit the new 'XMR' system.