EUS and its application
Purpose
Endosonography is a method of examination that combines endoscopy and ultrasound diagnosis. This method became available due to the invention of the echo endoscope, which is a gastroscopy with an ultrasound sensor at the end. The different frequency of the sensors (from 7 to 20 mHZ) makes it possible to differentiate the structure of the wall of the digestive tract, as well as the adjacent organs at a distance of 4-6 cm.
Currently, there are two types of ultrasonic sensors:
- Radial type - allows to obtain a radial image (360 degrees), perpendicular to the axis of the endoscope and used only for diagnostic endosonography.
- Convex type - allow to obtain a sectoral ultrasound image parallel to the axis of the endoscope, for carrying out a puncture biopsy under ultrasound control.
Application area
- Esophageal pathology
- Volumetric formation of the wall of the gastrointestinal tract
- Pathology of the pancreas
- The pathology of the gallbladder and bile ducts
- Volumetric formation of the chest and abdominal cavity
Interesting
Endosonography should be performed by an experienced endoscopist with an unrivaled knowledge of the anatomy of the abdominal and thoracic cavities, combined with patience and excellent possession of the endoscope.
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Work with instrument
Photo Gallery
Echo endoscopy with puncture needle
Echo endoscopy with convection sensor
Echo endoscope with radial sensor
Insertion of the puncture needle into the instrumental canal of the echoescope
Endosonographic image using a convection sensor at the time of puncture
Endosonographic image using a convection sensor
Endosonographic image using a radial sensor