Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1999-01-11
2000-09-05
Jaworski, Francis J.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
A61B 800
Patent
active
061135453
ABSTRACT:
Signal-to-noise ratio in medical ultrasound imaging is improved by using Golay-encoded excitation of a transducer array. Two orthogonal Golay pairs of sequences are transmitted to respective transmit focal zones. Start of transmission of the Golay pair to the second zone is delayed until shortly after the start of transmission of the Golay pair to the first transmit focal zone such that the two pairs of firings are overlapped in time. The receive filtering follows two parallel paths, one for each focal zone. Each decoding filter (also used for bandpass filtering) supplies its output signal to a vector summer, the output signal of which is multiplexed to conventional B-mode processing (envelope detection, logarithmic compression and edge-enhancement filter), followed by scan conversion for display.
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Chiao Richard Yung
Thomas, III Lewis Jones
General Electric Company
Jaworski Francis J.
Snyder Marvin
Stoner Douglas E.
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