Apparatus may be positioned within {HEAD ~ a body lumen} of {TAIL ~ 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 
Apparatus may be positioned within { HEAD ~ a body lumen } of { TAIL ~ 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
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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