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.
(a) and (b): Photographs of phantoms #1 (concentration of nanoparticle (clockwise): 0.5 mg/mL, 0.25 mg/mL, 0.2 mg/mL, and 0.125 mg/mL) and #2 (concentration of nanoparticles (anti-clockwise): 0.1 mg/mL, 0.04 mg/mL, 0.02 mg/mL, and 0.01 mg/mL), respectively. (c) and (d): PAI images of the phantoms #1 and #2, respectively (taken with an amplifier gain of 35 db and 45 db, respectively) (scale 3 cm × 3 cm)
