Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1998-06-23
2000-02-22
Manuel, George
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
A61B 800
Patent
active
060274484
ABSTRACT:
A method and system for ultrasonically imaging a target during an imaging session. The method includes the steps of transmitting ultrasonic energy at a fundamental frequency into the target from a plurality of transducer elements wherein each transducer element has a non-planar surface and shape that either focuses different frequency components at different focal points along a focal line or focuses common frequency components at different focal points along a focal line; and selectively receiving reflected ultrasonic echo information in the vicinity of a harmonic frequency while filtering out ultrasonic echo information at the fundamental frequency. The ultrasonic imaging system includes an ultrasonic transducer array comprising a plurality of transducer elements wherein each element has a non-planar surface in an elevation direction, and each transducer element has a shape that focuses different frequency components at different focal points along a focal line; transmit circuitry coupled to the transducer array, said transmit circuitry operative to transmit energy at a fundamental frequency; and receive circuitry coupled to the transducer array for selectively receiving ultrasonic echo information in the vicinity of a harmonic frequency from the target while filtering out ultrasonic echo information at the fundamental frequency.
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Cole Christopher R.
Hossack John A.
Mo Jian-Hua
Acuson Corporation
Manuel George
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