Apparatus for the examination of objects by ultrasonic echograph

Details Apparatus for the examination of objects by ultrasonic echograph Apparatus for the examination of objects by ultrasonic echograph

1992-11-13

1994-01-04

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

367103, 12866101, G03B 4206

Patent

active

052766543

ABSTRACT:
An apparatus for the examination of an object by ultrasonic echography, includes an array of n ultrasonic transducers which is associated with a stage for the emission of signals for scanning the object and with a stage for receiving and processing echographic signals retumed to the transducers, by the obstacles encountered in the object scanned. The emission stage is configured for the focusing of m simultaneously emitted ultrasonic beams, by virute of n emission modules, each of which, for example, the i.sup.th emission module, itself contains m signal generators (201a.sub.1, . . . , 201m.sub.1) which are connected in parallel (or a single signal generator followed by m parallel-connected delay circuits), a stage (202i) for combining the m signals thus generated, and an amplifier (203i) for applying the amplified combined signal to the transducer (10i) corresponding to the relevant emission module.

REFERENCES:
patent: 4882714 (1989-11-01), Tanigawa
patent: 4893183 (1990-01-01), Pesque
"High-Speed Ultrasound Volumetric Imaging System -- Part II: Parallel Processing and Image Display", by Olaf T. von Ramm et al., IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Proceedings, vol. 2, Mar. 1991.
"Golay Codes for Simultaneous Multi-Mode Operation in Phased Arrays", by B. B. Lee et al., 1982 IEEE Ultrasonics Symposium Proceedings, vol. 2, pp. 821-825, Oct. 27, 1982.

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