cholangiography

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Related to transhepatic cholangiography: cholangiogram

cholangiography

 [ko-lan″je-og´rah-fe]
x-ray examination of the bile ducts, using a radiopaque dye as a contrast medium. In the intravenous method, the dye is administered intravenously and is excreted by the liver into the bile ducts. X-ray films are taken at 10-minute intervals as the dye is excreted via the cystic, hepatic, and common bile ducts into the intestinal tract. The excretion is usually completed within 4 hours. Preparation of the patient for the intravenous method requires restriction of fluids to concentrate the dye and may also include cleansing of the intestinal tract on the day prior to the examination with a laxative or enema so that fecal material and gas will not obscure the biliary tract.

Sometimes cholangiography is done after surgery of the gallbladder and biliary tract. In this method the radiopaque dye is injected directly into a tube that has been left in the biliary tract since the time of surgery. Films are taken immediately after the dye is injected. If no obstruction is present, the biliary structures fill readily and rapidly empty into the intestinal tract.

When it is necessary for the surgeon to locate gallstones or other obstructive conditions at the time that surgery is being performed, the dye may be injected directly into the bile ducts. Films are taken in the operating room, and obstructions not otherwise discernible can be located and corrected while the patient is still anesthetized.

A patient who is jaundiced cannot undergo either intravenous cholangiography or oral cholecystography. An alternative route for the injection of the contrast dye and visualization of the biliary system is percutaneous transhepatic cholangiography. Under fluoroscopic control, a needle is introduced through the skin and into the liver where the contrast material is deposited. Obstructed and distended bile ducts can then be visualized. After visualization the ducts can be drained via the needle.
Percutaneous transhepatic cholangiography. The aspirating needle is passed through the patient's skin and liver tissue until the tip penetrates one of the hepatic ducts. Radiopaque medium is then instilled into the biliary tree to enhance radiographic visualization. From Malarkey and McMorrow, 2000.
fine needle transhepatic cholangiography (FNTC) transhepatic cholangiography performed by means of a very fine, highly flexible steel needle (skinny needle).
percutaneous transhepatic cholangiography see cholangiography.
transhepatic cholangiography cholangiography after introduction of radiopaque medium into the biliary system by percutaneous puncture of a bile duct.
transjugular cholangiography cholangiography after catheterization of a hepatic vein via the internal jugular vein in the neck and entry into a bile duct by percutaneous puncture across the wall of the hepatic vein.

chol·an·gi·og·ra·phy

(kō-lan'jē-og'ră-fē),
Radiographic examination of the bile ducts with contrast medium.
[chol- + G. angeion, vessel, + graphō, to write]

cholangiography

(kō-lăn′jē-ŏg′rə-fē)
n.
X-ray examination of the bile ducts after the administration of a radiopaque contrast medium.

cho·lan′gi·o·graph′ic (-ə-grăf′ĭk) adj.

cholangiography

Imaging Oral, IV or percutaneous administration of radiocontrast excreted into the bile tract, to detect gallstones or visualize bile ducts. See Percutaneous transhepatic cholangiography.

chol·an·gi·og·ra·phy

(kō-lan'jē-og'ră-fē)
Radiographic examination of the bile ducts using a contrast medium.
[chol- + G. angeion, vessel, + graphō, to write]

cholangiography

X-ray or other imaging examination of the bile ducts, usually after a fluid substance opaque to radiation has been introduced. The main object of cholangiography is to show stones in the bile ducts and gall bladder. The method may be done by direct injection through the skin into the liver (percutaneous, transhepatic cholangiography) or, by way of a flexible endoscope, through the bile duct opening in the duodenum (endoscopic retrograde cholangiography).

Cholangiography

Radiographic examination of the bile ducts after injection with a special dye.
References in periodicals archive ?
Caption: Figure 4: Percutaneous transhepatic cholangiography. This technique can be utilized to inject contrast directly into the biliary system and show, fluoroscopically, evidence of filling defects, which in the proper clinical context may be consistent with (clotted) hemobilia [68].
249 days after SEMS insertion, percutaneous transhepatic cholangiography showed stent fracture located at the stricture position, from partial, filamentous connective to complete fracture, without the distal part of the stent (arrow).
Percutaneous transhepatic cholangiography (PTC) conducted under fluoroscopic control in which a needle (the chiba or okuda) is advanced into the liver, contrast is injected and seen entering bile radicals.
Transhepatic cholangiography in patients with suspected biliary disease and non-dilated intrahepatic bile ducts.
Choi, "Three-dimensional spiral CT cholangiography with minimum intensity projection in patients with suspected obstructive biliary disease: comparison with percutaneous transhepatic cholangiography," Abdominal Imaging, vol.
To date US oral cholecystography oral cholecysto-computed tomography, scintigraphy, magnetic resonance cholangiography, percutaneous transhepatic cholangiography and endoscopic retrograde cholangiopancreatography have been used preoperatively to diagnose these anomalies (6).
Twenty-two patients underwent exploration with the intention of performing an operative bypass and 14 patients underwent percutaneous transhepatic cholangiography (PTC) with intention to stent.
(44) If a stricture is suspected and CT does not show any biliary dilatation, endoscopic retrograde cholangiopancreatography or percutaneous transhepatic cholangiography should be performed, as many liver transplants do not develop bile duct dilatation, even when there is high-grade narrowing.
Patients N =16 Male/female, n 8/8 Mean age (years) (SD) 60.3 (9.5) Pancreas tumor location Head 10 Tail 1 Uncinate process 5 Previous treatment (yes/no) (1) 14/2 Patients with pancreatic enzyme 5 replacement therapy (2) Dietetic treatment (yes/no) (3) 10/6 (1) Previous treatment being: chemotherapy (CT) (N = 3), percutaneous transhepatic cholangiography biliary drainage (PTC- drain) or plastic endoprothese (N = 3), CT and PTC-drain (N = 2), gastrojejunostomy (GJ) (N = 1), hepaticojejunostomy (HJ) (N = 2), CT and HJ (N = 1), GJ and HJ (N =1), and CT, GJ, and HJ (N =1).
Diagnosis- confirmed by ERCP and percutaneous transhepatic cholangiography. Purpose of treatment is to restore normal bile flow.
Finally, percutaneous transhepatic cholangiography should be applied for patients with complete closure of the distal biliary duct to define the level of the lesion.
Arslan et al., "Interventional endoscopic ultrasound-guided cholangiography: longterm experience of an emerging alternative to percutaneous transhepatic cholangiography," Endoscopy, vol.