Cine Cholangiography: Some Physiologic Observations

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Abstract
Postoperative cinecholangiography has been found useful asi a diagnostic procedure, but the physiologic implications of the study are even more enlightening. The rather passive emptying of the intrahepatic radicles aided by respiration and the relatively inactive hepatic ducts and proximal common duct are in contrast to the extremely active ampullary portion of the system. The sphincter of Oddi at the ampulla sometimes shows some evidence of independent activity from that of the duodenum, although duodenal peristalsis and sphincter contractions often occur simultaneously. The cause for pancreatic duct filling in some patients and the lack of it in others is poorly understood, but when it does occur the sphincter of Oddi may be either relaxed or show active systolic contraction. Effects of gravity, patient position, and pressure gradients are briefly described, and their role in improving cholangiography is discussed.

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