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US 11,452,498 B2Granted
Ultrasound imaging
AssigneeBK Medical Aps
InventorsSvetoslav Ivanov Nikolov, Jacob Kortbek, Henrik Jensen
Life of this patent
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Abstract
An ultrasound imaging system (102) includes a transducer array (108) with a two-dimensional non-rectangular array of rows (110) of elements, transmit circuitry (112) that actuates the elements to transmit an ultrasound signal into a field of view, receive circuitry (114) that receives echoes produced in response to an interaction between the ultrasound signal and a structure in the field of view, and a beamformer that processes the echoes, thereby generating one or more scan lines indicative of the field of view.
Claims21
A method, comprising:
- transmitting, with a two-dimensional non-rectangular transducer array, an ultrasound signal into a field of view;
- receiving, with the two-dimensional non-rectangular transducer array, echoes produced in response to an interaction between the ultrasound signal and structure in the field of view;
- processing the received echoes, thereby generating scan lines indicative of the field of view, wherein the processing includes beamforming, and the beamforming comprising:
- determining an echo propagation delay based on a layered model, wherein the layered model includes a parameterized delay function;
- correcting for a propagation path by computing a delay based on the parameterized delay function by minimizing a difference between a delay based on an actual propagation path and a delay based on an assumed propagation path;
- and
- utilizing the computed delay to process the received echoes and generate the scan lines indicative of the field of view.
4 more elements
A method, comprising:
- transmitting, with a two-dimensional non-rectangular transducer array, an ultrasound signal into a field of view;
- receiving, with the two-dimensional non-rectangular transducer array, echoes produced in response to an interaction between the ultrasound signal and structure in the field of view;
- processing the received echoes, thereby generating scan lines indicative of the field of view, wherein the processing includes beamforming, and the beamforming comprising:
- determining an echo propagation delay based on a layered model, wherein the layered model includes a parameterized delay function;
- correcting a propagation delay by computing the propagation delay based on the parameterized delay function by minimizing a difference between a delay based on an actual propagation path and a delay based on an assumed propagation path;
- and
- utilizing the computed delay to process the received echoes and generate the scan lines indicative of the field of view.
4 more elements
A method, comprising:
- transmitting, with a two-dimensional non-rectangular transducer array, an ultrasound signal into a field of view;
- receiving, with the two-dimensional non-rectangular transducer array, echoes produced in response to an interaction between the ultrasound signal and structure in the field of view;
- processing the received echoes, thereby generating scan lines indicative of the field of view, wherein the processing includes beamforming, and the beamforming comprising:
- determining an echo propagation delay based on a layered model,
- wherein the layered model includes a parameterized delay function, and the parameterized delay function includes:
- √{square root over (V20+α(1−cos(ϕ))+β(1−cos(2ϕ)))}, where V0 represents the velocity, ϕ represents a predetermined range of angles to correct over, and α and β represent weighting coefficients estimated to minimize a difference between a delay based on an actual propagation path and a delay based on an assumed propagation path.
3 more elements
Dependencies are inferred from the claim text.