David W Simpson

US Patent:

20220361841, Nov 17, 2022

Filed:

Jul 25, 2022

Appl. No.:

17/872203

Inventors:

- San Diego CA, US
Francois Guy Gerard Marie VIGNON - ANDOVER MA, US
David HOPE SIMPSON - BOTHELL WA, US
Andrew HANCOCK - SACRAMENTO CA, US
Sheng-Wen HUANG - OSSINING NY, US

International Classification:

A61B 8/12
A61B 8/08
A61B 8/00

Abstract:

Systems, methods, and devices that perform flow scan sequences are provided. In one embodiment, an ultrasound imaging system includes an intraluminal catheter or guidewire, an annular array of acoustic elements positioned around a circumference of the catheter or guidewire, and a processor in communication with the annular array. The processor is configured to activate a first subaperture of the annular array at a first time, thereafter, activate a second interleaving subaperture, and activate the first subaperture again at a different, second time such that the scan sequence moves around the circumference of the catheter or guidewire. Temporal differences between the received ultrasound signals obtained by the first subaperture at the first and second times are determined to detect motion around the annular array. By interleaving subaperture firings, the total number of firings to form an image frame can be reduced.

US Patent:

20220354465, Nov 10, 2022

Filed:

Jul 19, 2022

Appl. No.:

17/867997

Inventors:

- Eindhoven, NL
Seungsoo KIM - ANDOVER MA, US
Francois Guy Gerard Marie VIGNON - ANDOVER MA, US
David HOPE SIMPSON - BOTHELL WA, US

International Classification:

A61B 8/08
A61B 8/14
A61B 8/00
G01S 7/52

Abstract:

Improved ultrasound imaging devices and methods of operating the devices that minimize grating lobe artifacts in an ultrasound image are provided. For example, an ultrasound imaging system analyzes the ultrasound data at different frequency bands and generates a grating-lobe-minimized image based on minimum signals identified for each pixel among the plurality of frequency ranges. In one embodiment, an ultrasound imaging system includes an ultrasound transducer array configured to obtain ultrasound data, and a processor in communication with the ultrasound transducer array. The processor is configured to receive the ultrasound data, generate an ultrasound image based on a first frequency range of the ultrasound data, generate a grating-lobe-minimized ultrasound image based on a plurality of second frequency ranges of the ultrasound data, combine the ultrasound image and the grating-lobe-minimized ultrasound image to generate a combined ultrasound image, and output the combined ultrasound image to a display.

US Patent:

20230085700, Mar 23, 2023

Filed:

Nov 22, 2022

Appl. No.:

17/992423

Inventors:

- Eindhoven, NL
Shiying Wang - Melrose MA, US
Sheng-Wen Huang - Ossining NY, US
Francois Guy Gerard Marie Vignon - Andover MA, US
Keith William Johnson - Lynnwood WA, US
Liang Zhang - Issaquah WA, US
David Hope Simpson - Bothell WA, US

International Classification:

A61B 8/06
A61B 8/00
A61B 8/08

Abstract:

A system for visualization and quantification of ultrasound imaging data according to embodiments of the present disclosure may include a display unit, and a processor communicatively coupled to the display unit and to an ultrasound imaging apparatus for generating an image from ultrasound data representative of a bodily structure and fluid flowing within the bodily structure. The processor may be configured to estimate axial and lateral velocity components of the fluid flowing within the bodily structure, determine a plurality of flow directions within the image based on the axial and lateral velocity components, differentially encode the flow directions based on flow direction angle to generate a flow direction map, and cause the display unit to concurrently display the image including the bodily structure overlaid with the flow direction map.

US Patent:

20230092997, Mar 23, 2023

Filed:

Sep 19, 2022

Appl. No.:

17/933452

Inventors:

- Chelmsford MA, US
Bryan Crompton - Lowell MA, US
Junaid Islam - San Jose CA, US
David Simpson - Springfield VA, US
Dap Minh Tran - Lowell MA, US
Tommaso Melodia - Newton MA, US

International Classification:

H04L 47/10
H04L 47/30
H04L 47/2425
H04L 43/08

Abstract:

A method of dynamically routing packets to a destination node performed by a computing device is disclosed. The method includes: (1) detecting a status of a plurality of links to the destination node across a plurality of communications modalities; (2) determining a set of links to use for routing packets to the destination node based on the detected statuses; and (3) sending packets to the destination node via the determined set of links. A related computer program product, apparatus, and system are also disclosed.

US Patent:

20210145399, May 20, 2021

Filed:

May 25, 2018

Appl. No.:

16/616753

Inventors:

- EINDHOVEN, NL
SHIYING WANG - MELROSE MA, US
SHENG-WEN HUANG - OSSINING NY, US
FRANCOIS GUY GERARD MARIE VIGNON - ANDOVER MA, US
KEITH WILLIAM JOHNSON - LYNWOOD WA, US
LIANG ZHANG - ISSAQUAH WA, US
DAVID HOPE SIMPSON - BOTHELL WA, US

Assignee:

KONINKLIJKE PHILIPS N.V. - EINDHOVEN

International Classification:

A61B 8/06
A61B 8/00
A61B 8/08

Abstract:

A system for visualization and quantification of ultrasound imaging data according to embodiments of the present disclosure may include a display unit, and a processor communicatively coupled to the display unit and to an ultrasound imaging apparatus for generating an image from ultrasound data representative of a bodily structure and fluid flowing within the bodily structure. The processor may be configured to estimate axial and lateral velocity components of the fluid flowing within the bodily structure, determine a plurality of flow directions within the image based on the axial and lateral velocity components, differentially encode the flow directions based on flow direction angle to generate a flow direction map, and cause the display unit to concurrently display the image including the bodily structure overlaid with the flow direction map.

US Patent:

20200268345, Aug 27, 2020

Filed:

Feb 24, 2020

Appl. No.:

16/798502

Inventors:

- EINDHOVEN, NL
Seungsoo KIM - ANDOVER MA, US
Jun Seob SHIN - MEDFORD MA, US
Jean-luc Francois-Marie ROBERT - CAMBRIDGE MA, US
Andrew HANCOCK - SACRAMENTO CA, US
David HOPE SIMPSON - BOTHELL WA, US

International Classification:

A61B 8/00
A61B 8/14
A61B 8/12

Abstract:

Ultrasound systems and devices that perform scan sequences providing controllable and/or increased frame rates are provided. In one embodiment, an ultrasound system comprises an array of acoustic elements and a processor configured to perform a scan sequence comprising a plurality of transmit-receive pairs. The processor is configured to arrange the plurality of transmit-receive pairs into an aperture. The transmit-receive pairs corresponding to each transmit element correspond to only a portion of the plurality of receive elements and/or the transmit-receive pairs corresponding to each receive element correspond to only a portion of the plurality of transmit elements. Accordingly, fewer transmit-receive pairs are activated leading to faster aperture acquisitions, and therefore faster frame rates. Furthermore, the faster frame rates can be achieved without significant degradations in image quality.

US Patent:

20200214663, Jul 9, 2020

Filed:

Jan 3, 2020

Appl. No.:

16/733286

Inventors:

- EINDHOVEN, NL
Francois Guy Gerard Marie VIGNON - ANDOVER MA, US
David HOPE SIMPSON - BOTHELL WA, US
Andrew HANCOCK - SACRAMENTO CA, US
Sheng-Wen HUANG - OSSINING NY, US

International Classification:

A61B 8/12
A61B 8/00
A61B 8/08

Abstract:

Systems, methods, and devices that perform flow scan sequences are provided. In one embodiment, an ultrasound imaging system includes an intraluminal catheter or guidewire, an annular array of acoustic elements positioned around a circumference of the catheter or guidewire, and a processor in communication with the annular array. The processor is configured to activate a first subaperture of the annular array at a first time, thereafter, activate a second interleaving subaperture, and activate the first subaperture again at a different, second time such that the scan sequence moves around the circumference of the catheter or guidewire. Temporal differences between the received ultrasound signals obtained by the first subaperture at the first and second times are determined to detect motion around the annular array. By interleaving subaperture firings, the total number of firings to form an image frame can be reduced.

US Patent:

20200214681, Jul 9, 2020

Filed:

Jan 2, 2020

Appl. No.:

16/733050

Inventors:

- Eindhoven, NL
Francois Guy Gerard Marie VIGNON - ANDOVER MA, US
Jun Seob SHIN - MEDFORD MA, US
Jean-luc Francois-Marie ROBERT - CAMBRIDGE MA, US
David HOPE SIMPSON - BOTHELL WA, US
Andrew HANCOCK - SACRAMENTO CA, US

International Classification:

A61B 8/08
A61B 8/00
A61B 8/12
A61B 8/06
G06T 7/00

Abstract:

Systems, methods, and devices for generating ultrasound images that have reduced or minimized grating lobe artifacts are provided. In one embodiment, an ultrasound imaging system includes an array of acoustic elements, and a processor in communication with the array. The processor is configured to receive electrical signals from the array, determine, based on the directivity of the acoustic elements, a portion of the electrical signals corresponding to on-axis components, generate a weighting mask based on the portion, and apply the weighting mask to an original image to generate a grating lobe minimized image. Because grating lobe artifacts are caused, in part, by reflections from off-axis objects, applying the weighting mask to an original image can reduce the presence of grating lobe artifacts in the original image.