Diagnosis of GCA is suggested clinically by demonstration of complex offever, anemia and high ESR with or without polymyalgia Rheumatica in a patient > 50 years. Diagnosis is confirmed by biopsy of temporal aery (Gold standard). Colour duplex ultrasonographv of affected temporal aery can show a characteristic halo of edema and stenosis but this investigation is no more sensitive for the diagnosis of GCA than careful physical examination (Current Rheumatology). CT Angiographv and MRI may be useful for assessment of Temporal Aery but are not the investigations of choice.">