Figure-2a Transverse scan in which are visible the gastroduodenal artery(open arrow) anterior to the neck of the pancreas and the common bile duct (thin white arrow ) in the posterior aspect of the head of the pancreas The duct should not exceed 10 mm in internal d iameter at this level Large arrowheads body of pancreas; st stomach; small arrowhead take-off of superior mesenteric artery a= aorta; V= ferior vena cava Figure-2b Sagittal scan. The pancreas(p) lies anterior to the superior mesenteric vein(s)and posterior to the stomach(st) and left lobe of liver(L) Arrow denotes the hepatic artery which has just branched off the celiac axis Figure 3a Normal pancreas seen on transverse scan with visualization of the FWEsvERsE pancreatic duct(arrowhead) as a single line. Again are seen the stomach(st), left lobe of liver (L), aorta(a)and inferior vena cava(v).\9 The fluid-filled second portion of the duodenum (arrow)is seen adjacent to the pancreatic head; the gallbladder(g) is immediately lateral Figure -3b In this transverse scan, the pancreatic duct (arrow) is seen as a tube rather than a single echogenic line as long as the internal diameter does not exceed 2-2.5 mm and the walls are parallel, this is stil considered normal. Note that the posterior wall of the stomach(open arrow) looks almost identical to the pancreatic duct; care must be taken not to confuse the two. a= aorta:y= inferior vena cava:s= splenic vein; L= liverFigure - 2a. Transverse scan in which are visible the gastroduodenal artery (open arrow) anterior to the neck of the pancreas and the common bile duct (thin white arrow) in the posterior aspect of the head of the pancreas. The duct should not exceed 10 mm in internal diameter at this level. Large arrowheads = body of pancreas; st = stomach; small arrowhead = take-of f of superior mesenteric artery; a = aorta; v = inferior vena cava Figure - 2b. Sagittal scan.The pancreas (p) lies anterior to the superior mesenteric vein (s) and posterior to the stomach (st) and lef t lobe of liver (L). Arrow denotes the hepatic artery which has just branched of f the celiac axis. Figure - 3a. Normal pancreas seen on transverse scan with visualization of the pancreatic duct (arrowhead) as a single line. Again are seen the stomach (st), lef t lobe of liver (L), aorta (a) and inferior vena cava (v). The fluid-filled second portion of the duodenum (arrow) is seen adjacent to the pancreatic head; the gallbladder (g) is immediately lateral. Figure - 3b. In this transverse scan, the pancreatic duct (arrow) is seen as a tube rather than a single echogenic line; as long as the internal diameter does not exceed 2-2.5 mm and the walls are parallel, this is still considered normal. Note that the posterior wall of the stomach (open arrow) looks almost identical to the pancreatic duct; care must be taken not to confuse the two. A = aorta; v = inferior vena cava; s = splenic vein; L = liver