Endoscopic Ultrasound

Biliary and pancreatic endoscopic ultrasound refers to the installation of an ultrasound probe at the end of an endoscope into the stomach or duodenum, through the thin gastrointestinal wall, for the biliary tract, pancreas and adjacent vessels or Ultrasonic examination of lymph node lesions. Basic Information Specialist classification: Oncology examination classification: ultrasound Applicable gender: whether men and women apply fasting: fasting Tips: Do not eat drinking water for 8 hours before the test. Normal value Doctors are identified by the characteristics of the waveforms, curves, or images that the instrument reflects. In addition, combined with anatomical knowledge, normal and pathological changes, it is possible to diagnose whether the organ being examined is ill. Clinical significance Abnormal results: Ultrasonic endoscopy often fails to pass through the digestive tract tumor causing incomplete examination. People who need to be examined: patients with pancreatic malignancies. Precautions Contraindications before examination: Do not eat drinking water for 8 hours before the examination. Requirements for inspection: The inspector should cooperate with the patient to swallow. Inspection process There are two scanning methods, one is radial scan (radialscan) and the other is linear scan (linearscan), which is used according to requirements. The machine itself has two different scanners depending on the scanning frequency. One is an 7.5MHz and 12MHz inter-mirror ultrasonic probe that can convert frequencies, and the other is a 12, 20 or 30MHz narrow-diameter probe that can be placed in the bile duct. The former is to examine the lesions of the biliary and pancreatic tumors and adjacent structures; the latter is mainly the observation of the biliary and pancreatic mucosa and submucosa. The endoscopic ultrasound probe is placed in the upper part of the stomach and in the duodenum for observation. The patient is less comfortable when the probe is placed in the duodenum. Intraluminal endoscopic ultrasonography (IDUS), the use of endoscopic retrograde cholangiopancreatography techniques, the small diameter endoscope ultrasound probe placed in the bile duct or pancreatic duct, the implementation of the bile duct Ultrasound examination can clearly confirm the location of the lesion. Not suitable for the crowd Some people do not recommend biliary and pancreatic endoscopy because of abnormal anatomical location of the throat, narrow esophageal stenosis, pyloric stenosis, perforation, severe inhalation suffocation, or exclusion of endoscopy. Sonic check. Adverse reactions and risks May cause an infection.