Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1998-01-20
1999-06-15
Manuel, George
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
A61B 800
Patent
active
059116927
ABSTRACT:
An ultrasonic imaging system employs a thinned array of transducer elements in order to reduce the number of signal processing channels. The transducer elements are reduced in number and then selectively located at grid positions in a pattern which reduces the sidelobe levels produced by the array. Thinning is accomplished by discretizing the aperture of the transducer array in two steps. First, a continuous aperture is discretized as a set of concentric rings. Then each ring is replaced by a set of spaced transducer elements. A zero sampling technique is used to determine the number of elements on each ring.
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Hussain Moayyed Abdulhussain
Itani Linda Ann
Rigby Kenneth Wayne
General Electric Company
Manuel George
Snyder Marvin
Stoner Douglas E.
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