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Microwave‐induced thermoelastic pressure wave propagation in the cat brain
Author(s) -
Lin James C.,
Su JennLung,
Wang Yujin
Publication year - 1988
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250090205
Subject(s) - hydrophone , thermoelastic damping , acoustics , microwave , materials science , transducer , physics , thermal , quantum mechanics , meteorology
This paper presents direct measurements of acoustic pressure wave propagation in cat brains irradiated with pulsed 2.45‐GHz microwaves. Short rectangular microwave pulses (2 μs, 15 kW peak power) were applied singly through a direct‐contact applicator located at the occipital pole of a cat's head. Acoustic pressure waves were detected by using a small hydrophone transducer, which was inserted stereotaxically into the brain of an anesthetized animal through a matrix of holes drilled on the skull. The measurements clearly indicate that pulsed microwaves induce acoustic pressure waves which propagate with an acoustic wave velocity of 1523 m/s.