Although X-ray examination is a common method for the diagnosis of biliary diseases, some patients cannot be clearly displayed on ordinary X-ray films. This requires the use of medical contrast agents to enter the biliary tract through certain methods and channels, so that the contours and lesions of the cholangiography site The image can be clearly displayed on the X-ray film. This method is cholangiography. Patients with severe liver damage are not eligible for this test. If the patient's blood bilirubin concentration exceeds 51 μmol / L, the contrast agent is difficult to discharge into the biliary tract, and the biliary tract is not developed, so it is not suitable for this test.

Basic Information

Specialist classification: Digestive examination classification: X-ray

Applicable gender: whether men and women apply fasting: not fasting

Tips: On the day before the examination, the patient should eat a fat-rich diet, so that the old bile in the gallbladder is discharged. At 8 o'clock in the evening, 25 to 30 ml of castor oil is taken orally to drain the feces in the large intestine. Normal value

The normal biliary tract looks smooth and tidy on the X-ray film. You can see the left and right hepatic ducts and some small branches. The diameter of the common bile duct is less than 1cm. It is tapered downwards like a goose-brown tube. You can also see the contrast agent entering the twelve fingers. intestinal.

Clinical significance

People who need to be examined: It is suitable for patients who have had gallbladder removed but have recurrence of symptoms. It is clear whether there is residual or recurrence of stones in the bile duct. For patients with symptoms of bile duct stones at the outset, intravenous cholangiography is also required to understand the condition of stones in the bile duct. When there are stones in the bile duct, the bile duct can be found to be dilated, the edges are not neat, and there are voids caused by stones.

Abnormal results: The outline of the cholangiography site and the lesion image can be clearly displayed on the X-ray film.

Precautions

Forbidden before examination: fasting and no water should be given at least 6 hours before surgery. The instrument must be sterilized strictly before surgery. In particular, the contrast catheter can be immersed in 75% alcohol or placed in a formalin. The endoscopic biopsy tube was washed repeatedly with chlorhexidine solution.

Requirements for examination: On the day before the examination, the patient should eat a fat-rich diet, so that the old bile in the gallbladder is discharged. At 8 o'clock in the evening, 25 to 30 ml of castor oil is taken orally to drain the feces in the large intestine. On the morning of the inspection, do not eat breakfast, check from 8 to 9 am.

Inspection process

(1) Do a good job of explaining the work so that the patient can dispel concerns and actively cooperate.

(2) Carefully ask the medical history to see if the patient has contraindications for oral biliary photography.

(3) Oral contrast agent for cholangiography.

Not suitable for the crowd

Contrained people: Patients with severe liver damage are not eligible for this test.

Adverse reactions and risks

Nothing.