Ultrasonic reflex transmission imaging method and apparatus with

Details Ultrasonic reflex transmission imaging method and apparatus with Ultrasonic reflex transmission imaging method and apparatus with

1985-07-15

1986-11-25

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

128660, G01N 2900

Patent

active

046241434

ABSTRACT:
An ultrasonic imaging system and method are disclosed which include a transducer (10) for pulse insonification (16) of an object (14). Reflecting means (29) containing scatterers is acoustically coupled to object (14) opposite transducer (10). Echo signals received from within reflecting means (29) are converted to electrical signals at the transducer (10), which electrical signals are supplied to a signal processor (30) for processing the same. Echo signals obtained from a range zone (Z) within reflecting means (29) are integrated by integrator (42). The amplitude of echo signals from the range zone (Z) is strongly dependent upon attenuation at the focal point (F) whereby the integrator (42) output (60) also is strongly dependent upon attenuation at the focal point (F). The integrator (42) output (60) is supplied to a display (48) for use in establishing one pixel thereof. A C-scan display is provided by scanning the focal point (F) in a focal plane (22) substantially normal to the beam axis (20).

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J. C. Macado, et al., "Acoustic Wave Propagation in Randomly Distributed Spherical Particles", J. Acoust. Soc. Amer., 74(5), Nov. 1983, pp. 1529-1534.
H. Kanda et al., "Acoustic Microscope Observation of a Biological Specimen in a Total Reflector Backing Configuration", Ultrasonic Imaging, 5, (1983), p. 1, Abstract.

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