Is ultrasound gastroscopy the same as regular gastroscopy? Is there a difference? Is it also intubation?

Ultrasonic gastroscopy (referred to as EUS) is an advanced set of ultrasound and endoscopy as one of the medical equipment, it will be a miniature high-frequency ultrasound probe placed in the front of the endoscope, when the endoscope into the gastric lumen, the endoscope in the endoscopic direct observation of the morphology of the lumen at the same time, but also real-time ultrasound scanning, in order to get the histological characteristics of the pipeline wall of the various levels of the ultrasound images of the surrounding neighboring organs. It is also necessary to intubate the gastroscope.