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.
Prototype sensor that can measure blood pressure with ultrasonic sonar by Arakawa et al.: (a) the hardware system and (b) graphical user interface on measuring with this system, where the upper graph shows the time-series data of blood pressure.
