146
Participants
Start Date
January 30, 2018
Primary Completion Date
June 4, 2018
Study Completion Date
June 4, 2018
Dynamic needle tip positioning under ultrasound-guidance
The tip of needle is positioned under ultrasound-guidance using dynamic short-axis view.
Conventional long-axis view
The tip of needle is positioned under ultrasound-guidance using conventional long-axis in-plane view.
Seoul National University Hospital, Seoul
Seoul National University Hospital
OTHER