<prompt> Intra aerial thrombolysis is indicated inSuspected occlusion of larger aeryHistory of subarachnoid hemorrhageHistory of dementiaStroke of 6 hours duration  <response>: Answer- A. Suspected occlusion of larger aeryAcute ischemic stroke 6 hours in durationStroke is significant, i.e., disabling or life threateningSuspected occlusion of a large aery i.e., non-lacunar stroke syndromeNo hemorrhage on screening computed tomography scan 