When this point is reached, the laser energy is stopped and a cool fluid is immediately applied to the ablation site to create additional thermal stresses, resulting in further ablation of tissue by {HEAD ~ the thermal expansion stress} of {TAIL ~ rapid cooling} 
of
When this point is reached , the laser energy is stopped and a cool fluid is immediately applied to the ablation site to create additional thermal stresses , resulting in further ablation of tissue by { HEAD ~ the thermal expansion stress } of { TAIL ~ rapid cooling }
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 OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL