124
Participants
Start Date
January 15, 2023
Primary Completion Date
March 26, 2023
Study Completion Date
March 26, 2023
Modified dynamic needle tip positioning under ultrasound-guidance
The tip of needle is positioned under ultrasound-guidance using modified dynamic short-axis view.
Long-axis technique
The tip of needle is positioned under ultrasound-guidance using conventional long-axis in-plane view.
Shandong Provincial Qianfoshan Hospital, Jinan
Qianfoshan Hospital
OTHER