{HEAD ~ Apparatus} may be positioned within a body lumen of a patient and may deliver {TAIL ~ energy} at a first lengthwise and angular position to create a less than full circumferential treatment zone at the first position 
deliver
{ HEAD ~ Apparatus } may be positioned within a body lumen of a patient and may deliver { TAIL ~ energy } at a first lengthwise and angular position to create a less than full circumferential treatment zone at the first position
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH