The roentgenologic visualization of excretory ducts of a secreting organ is a longe-stablished diagnostic method in roentgenology. For a long time, radiologists have felt the need to establish a method for filling the excretory duct system of the pancreas with contrast material, in the way that intravenous retrograde urography is used to diagnose pathologic changes such as displacement of the renal collecting system or of the urethra. This need to establish a method became more urgent the more the pancreas resisted conventional roentgenologic clinical di agnostic methods. From time to time in...