Process for causing an interface to vibrate and then truncating

Details Process for causing an interface to vibrate and then truncating Process for causing an interface to vibrate and then truncating

1983-02-02

1984-11-06

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73629, 73642, G01N 2900

Patent

active

044804768

ABSTRACT:
The invention is useful in the field of diagnostic ultrasound to improve the axial resolution of an image. One embodiment comprises a transmitted, ultrasonic wave with two parts. The first part interacts with a specimen to initiate an echo, and the second part arrives out-of-phase with the ringing of the specimen and interferes to suppress the ringing. Another embodiment comprises a transmitted, electrical signal with two parts which interact as described above to cause a piezoelectric transducer to produce a transmitted, ultrasonic wave with truncated ringing.

REFERENCES:
patent: 4333347 (1982-06-01), Lang et al.

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