Method and apparatus for measuring elastic characteristics...

Details Method and apparatus for measuring elastic characteristics... Method and apparatus for measuring elastic characteristics...

2005-07-05

2005-07-05

Jaworski, Francis J. (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S443000

Reexamination Certificate

active

06913574

ABSTRACT:
A method and apparatus for measuring the elastic characteristics of a medium by estimating variations in the speckle patterns in ultrasound images. The method for measuring the elastic characteristics of a medium comprises the steps of applying vibrations to the medium; acquiring a plurality of ultrasound image frames of the medium; estimating a variation in brightness of the speckle pattern over the plurality of ultrasound image frames; and measuring the elastic characteristics of the medium based on the estimated brightness variation. The apparatus for measuring the elastic characteristics of a medium comprises a vibrator for applying vibrations to the medium; transducers for acquiring a plurality of ultrasound image frames of the medium; a device for estimating a variation in brightness of a speckle pattern over the plurality of ultrasound image frames; and a device for measuring the elastic characteristics of the medium based on the estimated brightness vibration.

REFERENCES:
patent: 5474070 (1995-12-01), Ophir et al.
patent: 5839441 (1998-11-01), Steinberg
patent: 5876342 (1999-03-01), Chen et al.
patent: 6558324 (2003-05-01), Von Behren et al.
patent: 2279743 (1995-01-01), None

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