Purpose:To evaluate the normal variations in the origin of the right gastric artery(RGA), as seen on abdominal angiogram. Materials and Methods:Fourhundred and twenty-six patients underwent celiac and superior mesenteric arteriogram, and in 154, the origin ofr the RGA was identified (M:F=116:38;mean age, 56 years;range, 6-84 years). Digital subtraction angiography were performed in 101 patients, conventional angiography in 53;we thus eveluated the origin of the RGA, normal variation of the hepatic artery, and the relationship between them. Results:The origin of the RGA was the proper hepatic artery(PHA) in 43% of cases(n=67), the left hepatic artery(LHA) in 41%(n=63), the common hepatic artery(CHA) in 9%(n-14), the right hepatic artery(RHA) in 4%(n=6), and the gastroduodenal artery(GDA) in 3%(n=4). Of these 154 patients, 126(82%) showed a normal hepatic artery branching pattern, with both hepatic arteries arising from the PHA;in 19 patients(12%), the RHA arose from the superiormesenteric artery(SMA), and in 6 patients(4%), the LHA arose from the left gastric artery(LGA). In 4 patients(3%) other branching patterns of the hepatic artery were noted. In 16 of 19 patients(89%) whose RHA arose from the SMA, the RGA originated in the LHA;in the other two, the RGA arose from the GDA and CHA, respectively. Conclusion:In 43% of cases, the main site from which the RGA originated was the PHA, and in 41% the LHA, as seen on abdominal angiogram. Where the RHA arose from the SMA, its most frequent site of origin, seen in 89% of cases, was the LHA. The exact recognition of the origin of the RGA, as seen on abdominal angiogram, could lead to a reduction of transarterial chemoembolization-related gastric complications.