Who developed endoscopic ultrasound (EUS) system and 2-D transesophageal echocardiographic system for the first time in the world? 

Who performed 2-D TEE and EUS examination for the first time in the world?

Who developed filling stomach with water method during EUS examination?

Filling stomach with water method is the most important discovery in the EUS examination.  Without this method we cannot have contact between stomach wall and transducer acoustically during EUS examinations.

　　　　　　　　Time table of development of EUS and TEE

References of time table  - - - - Click here 

When you wish to know much more, please read time line of development of endoscopic ultrasound and transesophageal echocardiography.   Click here

Please read this site (History of EUS).  Click here

Please read this site (History of TEE).  Click here