Figure 25. Acute necrotizing pancreatitis is demonstrated with MRCP before (A) and after (B) secretin administration. In B, the "ductal defect" visualized in A is completely filled (arrows), allowing main pancreatic duct disruption to be ruled out. Fat-suppressed TSE T1-weighted images before (C) and after administration of IV gadolinium chelate (D) clearly demonstrate the extent of glandular damage (arrowheads). The extent of necrosis is better evaluated in D.