Data acquisition in ultrasonic imaging systems using multiple, p

Details Data acquisition in ultrasonic imaging systems using multiple, p Data acquisition in ultrasonic imaging systems using multiple, p

1999-01-15

1999-11-09

Getzow, Scott M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

A61B 800

Patent

active

059804580

ABSTRACT:
A method for attenuating parallel artifacts an ultrasonic acoustic imaging system, including generating a temporal average a plurality of received line acquisitions that laterally and symmetrically transposed with respect to transmitted lines wherein the averages represent received lines with attenuated parallel artifact component. The line acquisitions may be interleaved among a set of frames and directions and a packet of line acquisitions may be performed for each frame. The rate of data acquisition may be increased by executing a plurality of line acquisitions at divergent angles, by generating and providing to a transducer a summation of a plurality of transmitted lines for each line acquisition, or by generating a diverging and spatially separated plurality of transmitted lines for each line acquisition by means of disjoint sub-apertures of the transducer formed of non-overlapping sub-sets of transducer elements. The transmission apertures may be used in sequence with a plurality of concurrent receiving apertures. The maximum time intervals between spatially adjacent line acquisitions may be reduced by use of a plurality of sub-sectors and alternately incrementing and decrementing the receive angle in each sub-sector by a multiple of an angular increment, and by acquisition of packets of lines. The data acquisition rate may also be increased by interleaving line acquisitions among a set of frames and temporal averaging to generate successive updated images.

REFERENCES:
patent: 4694434 (1987-09-01), Von Ramm et al.
patent: 5462057 (1995-10-01), Hunt et al.
patent: 5515852 (1996-05-01), Karp et al.
patent: 5718230 (1998-02-01), Chapman et al.

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