Inclusion Criteria:  1. Patients presented with overt signs of acute upper gastrointestinal bleeding (hematemesis, melena and/or hypotension) 2. documented bleeding lesion at endoscopy (ulcer, dieulafoy's lesion and others), further bleeds (persistent or recurrent) after endoscopic hemostasis (thermal or hemoclips) as defined by an International Consensus Group  Exclusion Criteria:  without a full informed consent from the patient or his next of kin Age <18 years Pregnant Lactating women patients with known allergy to intravenous contrast