Title :
Ultrasonic modeling and hydrophone measurements of dual divergent transducers for wearable therapeutic ultrasound device
Author :
Yuan Guo ; Fleshman, Shane K. ; Lewis, George K. ; Lewis, George K.
Author_Institution :
ZetrOZ Inc., Trumbull, CT, USA
Abstract :
This paper models and experimentally measures the acoustic interference from two low intensity 3MHz continuous ultrasound transducers of the sam® wearable ultrasound device. Resulting data show that placement configuration, which dictates interference depth, and frequency phase variation are the main factors to acoustic pressure distribution. Mathematical analysis reveals that the acoustic pressure distribution from continuous ultrasound is modulated by near field variations at shallow tissue depths. This observation is useful in the application of sam® and in the further research of its therapeutic benefits.
Keywords :
acoustic intensity measurement; biological tissues; biomedical measurement; biomedical transducers; biomedical ultrasonics; hydrophones; ultrasonic transducers; acoustic interference; acoustic pressure distribution; continuous ultrasound transducers; dual divergent transducers; frequency 3 MHz; frequency phase variation; hydrophone measurements; interference depth; mathematical analysis; near field variations; sam wearable ultrasound device; shallow tissue depths; ultrasonic modeling; wearable therapeutic ultrasound device; Acoustic beams; Acoustics; Applicators; Interference; Mathematical model; Transducers; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/EMBC.2014.6943652
