Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Low-tech needle angle selectors. (A,B) Protractor with bubble leveler connected to passive arm secured to table with disposable clip-on needle guide (Civco, Sarasota, FL. (C) Prototype clamp with plumb bob that selects the angles (arrow) brings carpentry to the interventional radiology suite.
