| abstract |
A system for measuring from the outside of a living body the pressure within the heart or the pressure of any portion which does not allow a measurement by the direct insertion of a pressure measuring sensor. n This system provides a method of measuring the pressure of the object by generating fine bubbles through cavitation, applying a low frequency ultrasonic wave to the medium, and then detecting the bubbles which are generated with a system for detecting the high or low frequency harmonics due to the bubbles or a higher frequency ultrasonic wave applied to the medium. |