{HEAD ~ Both the laser radiation and cooling spray} are delivered in a non contact mode to {TAIL ~ the tissue} 
{ HEAD ~ Both the laser radiation and cooling spray } are delivered in a non contact mode to { TAIL ~ the tissue }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL