This voltage is detected by {HEAD ~ a detector} connected to {TAIL ~ the terminals} 50, thereby distinguishing the position of that internal organ of the patient which has been diagnosed 
This voltage is detected by { HEAD ~ a detector } connected to { TAIL ~ the terminals } 50 , thereby distinguishing the position of that internal organ of the patient which has been diagnosed
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH