Title :
Ultrasound-based pressure measurement using bubble decay
Author :
Tickner, E. Glenn ; Jackson, John I. ; Short, Robert E.
Author_Institution :
Microsome, Watsonville, CA, USA
Abstract :
A new method of measuring fluid pressure using high intensity diagnostic ultrasound is proposed. The technique relies upon encapsulated microbubbles designed to fail at a specified acoustic intensity irrespective of bubble size. Upon exposure to ultrasound, the breaking bubbles exhibit a backscattered signal decay time constant that varies with ambient fluid pressure
Keywords :
biomedical ultrasonics; blood pressure measurement; bubbles; acoustic intensity; backscattered signal decay time constant; blood pressure measurement; breaking bubbles; bubble decay; encapsulated microbubbles; fluid pressure; ultrasound-based pressure measurement; Absorption; Backscatter; Biomedical measurements; Biomedical monitoring; Pressure measurement; Resonant frequency; Testing; Time measurement; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.992041
