NEW NONINVASIVE TECHNIQUE FOR CARDIAC PRESSURE MEASUREMENT - 2. SCATTERING FROM ENCAPSULATED BUBBLES. Academic Article uri icon

abstract

  • In a recent paper (hereafter referred to as I) the authors proposed, analyzed, and experimentally substantiated a new technique for noninvasive measurement of cardiac pressure. The methodology of paper 1 is based on the observation that, as a bubble of gas in a liquid is perturbed, it oscillates with a characteristic resonant frequency f//Q. This resonant frequency is a function of the ambient pressure of the surrounding liquid and may be observed by interaction with an ultrasonic probe. Hence, by acoustically monitoring the resonant frequency of the bubble, one has a direct measurement of the liquid pressure. In the present paper the authors report on the amplitude and frequency sensitivity to pressure of two types of spheres. Further, they demonstrate the viability of the proposed scheme as applied to remote cardiac pressure measurements.

published proceedings

  • Proceedings of the Society of Photo-Optical Instrumentation Engineers

author list (cited authors)

  • Anderson, D. Z., Scully, M. O., & Speed, W. C.

complete list of authors

  • Anderson, DZ||Scully, MO||Speed, WC

publication date

  • January 1978