{HEAD ~ System} and method to determine {TAIL ~ the location} and orientation of an indwelling medical device 
{ HEAD ~ System } and method to determine { TAIL ~ the location } and orientation of an indwelling medical device
HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH