{TAIL ~ An X ray generator} 12, wherein {HEAD ~ said negative potential} is controlled so as to regulate a tube current 
{ TAIL ~ An X ray generator } 12 , wherein { HEAD ~ said negative potential } is controlled so as to regulate a tube current
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH