Ultrasound harmonic imaging techniques

Details Ultrasound harmonic imaging techniques Ultrasound harmonic imaging techniques

1998-12-31

2001-01-16

Lateef, Marvin M. (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

Reexamination Certificate

active

06174284

ABSTRACT:

CROSS-REFERENCE TO RELATED APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
BACKGROUND OF THE INVENTION
This invention relates to acoustical imaging and, more specifically, relates to ultrasonic harmonic imaging.
Recently there has been a great deal of clinical interest in harmonic imaging for ultrasound. In harmonic imaging, second or higher order harmonics of the transmitted ultrasound's fundamental frequencies are processed.
Accordingly, there is a need for a reliable and accurate method and apparatus for enabling such imaging. This invention fills that need.
BRIEF SUMMARY OF THE INVENTION
The present invention is useful in an ultrasound system comprising a receiver connected to receive ultrasound echo signals from a subject under study. The echo signals comprise a first band of frequencies and one or more harmonics of the first band of frequencies. The preferred embodiment provides harmonic imaging in response to the echo signals firstly by receiving the echo signals. The first band of frequencies from the echo signals is filtered, preferably by a band pass analog filter. The filtered signals are processed, preferably by a processor. One or more images are displayed in response to the processed signals, preferably by a display system.
By using the foregoing techniques, ultrasound harmonic imaging can be provided with a degree of accuracy and ease previously unattained.


REFERENCES:
patent: 4714846 (1987-12-01), Pesque et al.
patent: 5924991 (1999-07-01), Hossack et al.
patent: 5971928 (1999-10-01), Dodd et al.

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