Fig. 4
From: Secretin-stimulated MR cholangiopancreatography: spectrum of findings in pancreatic diseases
a–c Mild chronic pancreatitis. MRCP obtained before secretin injection (a) shows a normal main pancreatic duct. Three minutes after secretin stimulation (b), MRCP reveals side branch dilation, particularly at the level of the head and tail diagnosed as mild chronic pancreatitis. MRCP obtained 15 min after secretin injection (c) demonstrates normal duodenal filling beyond the genu inferius, interpreted as preserved pancreatic exocrine reserve