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.
Schematic of different IVPA catheter designs. (a) Schematic of a collinear IVPA catheter design. (b) Schematic of an IVPA catheter with a longitudinal offset between optical and acoustic beams (red optical beam and green ultrasound beam). Reprinted from [114] with permission.
