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