Communications – electrical: acoustic wave systems and devices – Acoustic image conversion
Patent
1995-02-27
1996-08-20
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Acoustic image conversion
367 87, 367103, 367105, 367140, 367153, G03B 4206, H04R 1700
Patent
active
055485618
ABSTRACT:
In a digital ultrasound imaging system, artifacts due to spurious ultrasound reflections from a highly reflective object outside the region of interest are reduced in magnitude by apparatus included in the beamforming system of the digital imaging system. A null is formed in a specified direction in the ultrasound beam patterns by perturbing the time delay on each receive channel. After estimating the direction of the highly reflective, interfering object and computing a time delay perturbation using a very fast algorithm, a null approximately 10 dB deep is introduced into each beam in the direction of the interfering object. This null reduces the magnitude of artifacts in the image, thereby providing image enhancement.
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Bae Koeunyi
Hussain Moayyed A.
Rigby Kenneth W.
Eldred J. Woodrow
General Electric Company
Snyder Marvin
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