Backscatter data collection technique for ultrasound

Patent 4803994 Issued on February 14, 1989. Estimated Expiration Date:

August 12, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor: Nicolas

Inventor

Burke, Thomas M.

Assignee

General Electric Company

Application

No. 07/084228 filed on 08/12/1987

US Classes:

600/442Tissue attenuation or impedance measurement or compensation

Examiners

Primary: Jaworski, Francis J.

Attorney, Agent or Firm

International Classes

A61B 8/08 (20060101)
G01S 7/52 (20060101)

Abstract

A rapid, non-invasive realtime modality for detecting differential backscatter in ultrasound is achieved using narrowband interrogating frequencies to maximize signal-to-noise ratio and to minimize location errors. Additional improvement in signal-to-noise ratio and separation of tissue populations are achieved by cyclically alternating through a fixed number of predetermined burst lengths and by employing multiple narrowband bursts of differing fundamental frequencies.

Other References

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