Each of {HEAD ~ the different methods} in {TAIL ~ use} is sensitive to some particular aspect of the structures to be imaged 
Each of { HEAD ~ the different methods } in { TAIL ~ use } is sensitive to some particular aspect of the structures to be imaged
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH