Method and apparatus for transmitting ultrasound pulses and...

Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation

Reexamination Certificate

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Details

Other Related Categories

C600S447000, C600S458000

Type

Reexamination Certificate

Status

active

Patent number

07458935

Description

ABSTRACT:
A method for transmitting ultrasound pulses and receiving echo signals at a harmonic of the transmission frequency includes the steps of generating a signal for exciting a transducer to transmit at least one ultrasound pulse at a basic transmission frequency and receiving the reflection echo of said pulse at a harmonic of the frequency of the transmitted pulse, any contributions to the harmonic frequency being removed or attenuated in the signal for exciting pulse transmission, characterized in that the signal for exciting the transducer/s is filtered or coupled thereto via a resonant circuit which is calibrated to the basic frequency. In combination therewith or alternatively thereto, the method includes a resonant circuit for additional coupling with a receiver. Included is an apparatus for transmitting ultrasound pulses and receiving echo signals at a harmonic of the transmission frequency, particularly an ultrasound imaging probe and an ultrasound imaging machine.

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patent: 0 770 352 (1997-05-01), None
Calliada et al. Ultrasound contrast agents Basic principles. European Journal of Radiology 27 (1998) S157-S160.

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