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US 8,506,487 B2Granted
Ultrasound imaging device
AssigneeHitachi Medical Corporation
InventorHiroshi Masuzawa
Life of this patent
Estimating the term…
Abstract
A transmission/reception beamformer output provided with point spread functions having different wave number vector directions is used to obtain a compound image that is highly isochronous and sufficiently blurring-resistant.
Claims17
An ultrasound imaging device comprising:
- a plurality of elements that transmit or receive an ultrasound wave;
- a transmission beamformer that converges a transmission beam transmitted from the plurality of elements in relation to the plurality of elements;
- and
- a reception beamformer that forms a reception beam in relation to a plurality of reception signals generated upon receipt of a reflected ultrasound wave;
- wherein the transmission beamformer or the reception beamformer forms a plurality of point spread functions having different spatial distributions around a transmission focal point or a reception focal point;
- wherein the plurality of point spread functions are formed when signals of a transmission/reception element group in a transmission/reception aperture are subjected to transmission and reception sensitivities (weights), and delay time symmetrical from a center on a basis of a same time pulse waveform;
- and
- wherein an image data is formed in accordance with an output of the transmission beamformer or the reception beamformer.
5 more elements
An ultrasound imaging device comprising:
- a plurality of elements that transmit or receive an ultrasound wave;
- a transmission beamformer that converges a transmission beam transmitted from the plurality of elements in relation to the plurality of elements;
- and
- a reception beamformer that forms a reception beam in relation to a plurality of reception signals generated upon receipt of a reflected ultrasound wave;
- wherein the transmission beamformer or the reception beamformer forms a plurality of point spread functions having different spatial distributions around a transmission focal point or a reception focal point;
- wherein the point spread functions are derived from a transmission and reception sensitivities (weights), and delay time symmetrical from a center on a basis of a same time pulse waveform;
- and
- wherein an image data is formed in accordance with an output of the transmission beamformer or the reception beamformer.
5 more elements
An ultrasound imaging device comprising:
- a plurality of elements that transmit or receive an ultrasound wave;
- a transmission beamformer that converges a transmission beam transmitted from the plurality of elements in relation to the plurality of elements;
- and
- a reception beamformer that forms a reception beam in relation to a plurality of reception signals generated upon receipt of a reflected ultrasound wave;
- wherein the transmission beamformer or the reception beamformer forms a plurality of point spread functions having different spatial distributions around a transmission focal point or a reception focal point;
- wherein the plurality of point spread functions are formed when signals of a transmission/reception element group in a transmission/reception aperture are subjected to transmission and reception sensitivities (weights), and delay time symmetrical from a center on a basis of a same time pulse waveform;
- and
- wherein an image data is formed in accordance with an output of the transmission beamformer or the reception beamformer.
5 more elements
An ultrasound imaging device comprising:
- a plurality of elements that transmit or receive an ultrasound wave;
- a transmission beamformer that converges a transmission beam transmitted from the plurality of elements in relation to the plurality of elements;
- and
- a reception beamformer that forms a reception beam in relation to a plurality of reception signals generated upon receipt of a reflected ultrasound wave;
- wherein the transmission beamformer or the reception beamformer forms, for each point of a plurality of points, a plurality of point spread functions having different spatial distributions around a transmission focal point or a reception focal point of said each point;
- wherein the plurality of point spread functions are formed when signals of a transmission/reception element group in a transmission/reception aperture are subjected to transmission and reception sensitivities (weights), and delay time symmetrical from a center of said each point, on a basis of a same time pulse waveform;
- and
- wherein an image data is formed utilizing the plurality of point spread functions of said each point of the plurality of points, output from the transmission beamformer or the reception beamformer.
5 more elements
Dependencies are inferred from the claim text.