In radiography, sickness is given a cure (6)
I believe the answer is:
physic
'a cure' is the definition.
(thesaurus)
'in radiography sickness is' is the wordplay.
'in' indicates the answer is hidden within the clue.
'PHYSIC' can be found hidden inside 'radiography sickness is'.
'given' is the link.
(Other definitions for physic that I've seen before include "(Misleading) surface appearance" , "Old medicine - shy pic (anag)" , "Medicinal drugs (archaic)" , "An unusual medicine is the answer" , "Wholesome" .)