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Secondary cholangiography: Done after a biliary drainage intervention. In both cases fluorescent fluids are used to create contrasts that make the diagnosis possible. Cholangiography has largely replaced the previously used method of intravenous cholangiography (IVC). [citation needed]
Injection of the contrast medium into an artery or vein will cause the contrast to dispersed quickly due to blood flow. [4] Cholangiography during a biliary drainage intervention is called perioperative or primary choloangiography, and when performed later in the same drain it is called secondary cholangiography. [7]
To do an IVC, an iodine-containing dye (meglumine ioglycamate) is injected intravenously into the blood. The liver then removes the dye from the blood and excretes it into the bile. The iodine is sufficiently concentrated as it is secreted into the bile that it does not need to be further concentrated by the gallbladder to outline the bile ...
Insertion of a stent through the major duodenal papilla and ampulla of Vater into the common bile duct and/or the pancreatic duct; Dilation of strictures (e.g. primary sclerosing cholangitis, anastomotic strictures after liver transplantation) [5] Extraction of liver flukes from the biliary system (e.g., opisthorchiasis, clonorchiasis, fasciolosis)
The rest comes from the partially deoxygenated blood from the portal vein. The liver consumes about 20% of the total body oxygen when at rest. That is why the total liver blood flow is quite high, at about 1 litre a minute and up to two litres a minute. That is on average one fourth of the average cardiac output at rest.
Besides providing information regarding the biliary system, MRCP also provides information regarding surrounding solid organs and blood vessels, thus useful for planning the resection of pancreatic cancer and look for complications of primary sclerosing cholangitis such as liver cirrhosis and cholangiocarcinoma.
The human hepatic portal system delivers about three-fourths of the blood going to the liver.The final common pathway for transport of venous blood from spleen, pancreas, gallbladder and the abdominal portion of the gastrointestinal tract [2] (with the exception of the inferior part of the anal canal and sigmoid colon) is through the hepatic portal vein.
Buffer in blood 5-5.7 × 10 −4: Bile acids Digestive function, bilirubin excretion 2-30 × 10 −6: 3-30 × 10 −6: Bilirubin: Hemoglobin metabolite 2-14 × 10 −6: 1-10 × 10 −6: Biotin (Vitamin H) Gluconeogenesis, metabolize leucine, fatty acid synthesis 7-17 × 10 −9: 9-16 × 10 −9: Blood Urea Nitrogen (BUN) 8-23 × 10 −5 ...