Endoscopic Ultrasound: Introduction and How to Educate Operators

  • Akio Katanuma
  • Hiroyuki Maguchi
  • Kuniyuki Takahashi
  • Kei Yane
  • Toshifumi Kin


Endoscopic ultrasound (EUS) is used to obtain ultrasound images from the gastrointestinal (GI) lumen by inserting an endoscope with a US transducer mounted at the tip. Recently, electronic scanning EUS has been developed, markedly improving the quality of conventional B-mode images. Moreover, EUS comes with various functions, including tissue harmonic imaging, Doppler function, elastography, and contrast harmonic echo using contrast agents. There are two types of EUS: the radial scanning (RS) and the curved linear array (CL). CL is now widely used for not only the pathological diagnosis through the collection of specimens but also various therapeutic applications. To perform both radial and curved array EUS, visualization of the target is necessary. Moreover, the EUS technique is operator dependent, and an operator must acquire a certain level of skill including interventional procedures. Nowadays, there are some training models which include living animal, ex vivo animal model, phantom, and computer-based simulator that are developed. With the expansion of indications, more complex skills will be required for EUS procedures, and appropriate training systems will play an increasingly vital role.


Endoscopic ultrasound Endoscopic ultrasound-guided fine needle aspiration Interventional EUS Training model 


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Copyright information

© Springer Japan KK, part of Springer Nature 2019

Authors and Affiliations

  • Akio Katanuma
    • 1
  • Hiroyuki Maguchi
    • 1
  • Kuniyuki Takahashi
    • 1
  • Kei Yane
    • 1
  • Toshifumi Kin
    • 1
  1. 1.Center for Gastroenterology, Teine-Keijinkai HospitalSapporoJapan

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