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