{HEAD ~ Radioactive agents} have {TAIL ~ applications} in imaging and delivery of radiations, depending on the specific element included in the active agent 
have
{ HEAD ~ Radioactive agents } have { TAIL ~ applications } in imaging and delivery of radiations , depending on the specific element included in the active agent
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH