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.
Experimentally measured and fitted attenuation data for (a) Sonazoid (Reproduced with permission from [110] and [111]). (b) PLA microbubbles (Reproduced with permission from [112]). NM: Newtonian Model, CEM: Constant Elasticity Model, EEM: Exponential Elasticity model, MM: Marmottant model.
