Siemens Medical Solutions Usa, Inc.

Brian Vincent Colby

D-l Donald Liu

Daniel Brueske

Steven R Martin

A system and method for storing imaging information of multiple receive events and/or for generating a plurality of beams from a single receive event are disclosed. A transducer has a plurality of elements and is operable to receive a first acoustic signal from a first receive event and a second acoustic signal from a second receive event. A memory is in communication with the transducer to receive element data from the plurality of elements. The memory is operable in a first section and a second section. The memory is further operable to store first and second imaging data in the first and second sections, respectively. The first and second imaging data is based on the first and second acoustic signals, respectively.

System for generating multiple beams from a single receive event

Receive beamformers for receive beamforming ultrasound information include a plurality of channels. The received signals for each channel are oversampled for conversion to digital form, such as sampling with a sigma-delta converter. The reconstruction of the samples into data at the Nyquist or other rate is performed in stages. Partial reconstruction to a rate less than the oversampling rate, but greater than the Nyquist rate, occurs prior to summation across channels. Delays are implemented by selecting data from the sample stream. After summation, the samples are reconstructed at a Nyquist or other rate.

Dynamic receive beamformer with oversampling for medical diagnostic ultrasound

Ultrasound information for B-mode and CW Doppler mode use the same digital beamformer. Due to sigma-delta conversion or over sampling, sufficient dynamic range is provided for the desired bandwidth. By mixing the input ultrasound information to base band before conversion, additional dynamic range may be provided. The electrical impedance may be better matched to elements by connecting a different number of sigma-delta converters to an element. Elements with lower impedance may be connected to a plurality of sigma-delta converters. To increase the aperture size for elements with a higher impedance, the same sigma-delta converters may be used as separate receive beamformer channels without the summation.

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Renton, WA, United States of America

Brian Vincent Colby