Measurement of velocity and tissue temperature by ultrasound

Details Measurement of velocity and tissue temperature by ultrasound Measurement of velocity and tissue temperature by ultrasound

1982-09-30

1984-06-05

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

128660, 128736, 374119, G01N 2900, G01K 1122

Patent

active

044520816

ABSTRACT:
Temperature inside a tissue volume is noninvasively determined on the basis of its known relationship with the velocity of ultrasound inside the volume. The velocity of ultrasound between two field points inside the volume of interest is calculated from measurements of differences in transit times of sound beams scattered in substantially opposite directions at these field points.

REFERENCES:
patent: 2934756 (1960-04-01), Kalmus
patent: 3257639 (1966-06-01), Kokesh
patent: 3302166 (1967-01-01), Zemanek, Jr.
patent: 4215575 (1980-08-01), Akita et al.
"New Sensors for Ultrasound: Measuring Temperature Profiles", Lynnworth et al., Materials Evaluation and Standards, Aug. 1970, vol. 10, No. 8, pp. 6-11.

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