Dynamic hepatobiliary imaging

A radiopharmaceutical that can be taken up by the liver cells and excreted via the biliary tract is secreted into the bile by a process similar to the treatment of bilirubin, and then excreted into the intestine via the biliary system. Dynamic imaging can observe the process of ingestion, secretion and excretion of drugs into the biliary tract and intestines, and understand the morphological structure and function of the hepatobiliary system. Basic Information Specialist classification: Digestive examination classification: radionuclide Applicable gender: whether men and women apply fasting: fasting Tips: Fasting for 4 to 12 hours before inspection. Normal value normal. Clinical significance Abnormal results: 1, neonatal congenital biliary malformations. 2, total bile duct cysts. 3. Determine the location of the gallbladder and the degree of bile duct expansion. Need to check the crowd: 1. Patients who need to test liver function. 2, there are gastroduodenal reflux, acid reflux, nausea and vomiting symptoms. Precautions Preparation before inspection: 1, fasting 4 ~ 12h before the test, fasting time is too long or the use of complete intravenous nutrition may be due to bile can not enter the filling gallbladder caused by gallbladder not developed to cause false positive. 2, before the test should be done first fat meal test, through the fat meal or other fat stimulation to determine the gallbladder contraction function. Requirements for inspection: The patient was placed in the supine position, using a large-field, low-energy universal collimator, and immediately after the injection of the imaging agent, dynamic imaging was performed at 5, 10, 20, 30, 45, and 60 min. Inspection process First, the imaging method 1. The patient was placed in the supine position, using a large-field, low-energy universal collimator, and immediately after the injection of the imaging agent, the dynamic imaging was performed at 5, 10, 20, 30, 45, and 60 min. Highly suspected acute cholecystitis, gallbladder 60min undeveloped should be taken for 3 ~ 4h delayed image, some lesions, such as common bile duct, bile duct stricture, etc. must be delayed imaging at 18 ~ 24h. Second, intervention test 1. Cholecystokinin (CCK); artificially synthesized cholecystokinin Sincalide has the activity of promoting gallbladder contraction. The dose was 0.2 μg/kg. After the slow injection, the gallbladder began to contract, and the effect reached a peak at 15 minutes. The role of Sincalide: First, fasting for more than 24 hours to empty the bile in the gallbladder before examination. The second is to measure the gallbladder contractile function. 2. Morphine can be used to shorten the time required to diagnose acute cholecystitis. The injection dose is 0.04 mg/kg, and the maximum dose is 2 to 3 mg. Applicable to highly suspected acute cholecystitis and 45 to 60 minutes of gallbladder still undeveloped, no evidence of total bile duct obstruction. 3. Fat meal test (fatdiettest); determination of gallbladder contractile function by fat meal or other fat stimulation. 4. Barbital; suspected infantile jaundice, usually 5 times daily oral administration of 5 mg / kg of luminal, at least 3 to 5 days, to increase the liver and gallbladder excretion of imaging agents and improve the diagnosis of congenital biliary atresia Specificity. Not suitable for the crowd Heart patients need to consult a doctor. Adverse reactions and risks May cause indigestion.