The voltage and {HEAD ~ current values} are used to create {TAIL ~ real and reactive impedance images} of the interior of the body 
used to create
The voltage and { HEAD ~ current values } are used to create { TAIL ~ real and reactive impedance images } of the interior of the body
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH