Ultrasonic diagnostic apparatus and pulse compression apparatus

Details Ultrasonic diagnostic apparatus and pulse compression apparatus Ultrasonic diagnostic apparatus and pulse compression apparatus

1989-04-17

1990-08-14

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

12866001, G03B 4206

Patent

active

049493124

ABSTRACT:
An ultrasonic diagnostic apparatus for obtaining ultrasonic images of a body to be inspected by selectively using a plurality of ultrasonic vibrating elements having different frequency characteristics, including a chirp signal generating circuit for generating a chirp signal selected from a plurality of chirp signals each corresponding to respective ultrasonic vibrating elements, a plurality of pulse compression circuits each having a reference wave signal corresponding to respective chirp signals and compressing the echo signal by deriving a correlation of the echo signal with the selected reference signal, and a switching circuit for selecting one of the pulse compression circuits in accordance with the selected chirp signal corresponding to the ultrasonic vibrating element to be used.

REFERENCES:
patent: 4425634 (1984-01-01), Iino et al.
patent: 4449209 (1984-05-01), Zehner et al.
patent: 4716414 (1987-12-01), Luttrell et al.

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