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