The delivered energy is subtracted from the actual energy detected by the sensor to determine {HEAD ~ a delta} which corresponds to {TAIL ~ the energy} absorbed by the tissue 
corresponds to
The delivered energy is subtracted from the actual energy detected by the sensor to determine { HEAD ~ a delta } which corresponds to { TAIL ~ the energy } absorbed by the tissue
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH