Koninklijke Philips Corporation N.v.

Shriram Sethuraman

Ajay Anand

William Tao Shi

Jochen Kruecker

Sheng-Wen Huang

Krishnamoorthy Palanisamy

Shyam Bharat

Balasundar Iyyavu Raju

Rajendra Singh Sisodia

Faik Can Meral

Vikram Basawaraj Patil Okaly

Ramon Quido Erkamp

John Petruzzello

Shiwei Zhou

Nagaraju Bussa

Junbo Li

Ehsan Dehghan Marvast

Cynthia Ming-fu Kung

Shankar Mosur Venkatesan

Pingkun Yan

Sushanth Govinahallisathyanarayana

Francois Guy Gerard Marie Vignon

Ameet Kumar Jain

Sergei Shulepov

James Robertson Jago

Hua Xie

Gosta J Ehnholm

Rick Bezemer

Vijay Parthasarathy

Douglas Allen Stanton

Neil Glossop

Sandeep M Dalal

Nico Maris Adriaan De Wild

Denny Mathew

Dirk Binnekamp

Luis Felipe Gutierrez

Thanasis Loupas

Ravindra Balasaheb Patil

Evgeniy Leyvi

Raghavendra Srinivasa Naidu

Jonathan Thomas Sutton

Sibo Li

Balasundara I Raju

John Petruzello

Jonathan Fincke

Sabina Manzari

Sushanth Govinahalli Sathyanarayana

Robert Michael Staruch

Neil David Glossop

Gosta Ehnholm

User feedback on acquisition of ultrasound data may be provided to a user. The feedback may indicate a quality of the acquisition and/or the reliability of the measurements calculated from the ultrasound data, for example, the volume flow measurements calculated from Doppler data. Various quality factors such as a signal-to-noise ratio (SNR), motion, Doppler angle, vessel size, vessel depth, and/or variance in velocity values may be determined to provide an indication of quality of the acquisition. The quality factors may be provided individually or in combination. In some examples, one or more quantitative values of the quality factors may be provided. In some examples, one or more qualitative indications of the quality of the acquisition may be provided.

Apparatuses, systems and methods for providing acquisition feedback

Various embodiments of the present disclosure include a thermal ablation probabilistic controller () employing an ablation probability model () trained to render a pixel ablation probability for each pixel of an ablation scan image illustrative of a static anatomical ablation. In operation, the thermal ablation probabilistic controller () spatially aligns a temporal sequence of ablation scan datasets representative of a dynamic anatomical ablation, and applies the ablation probability model () to the spatial alignment of the temporal sequence of ablation scan datasets to render the pixel ablation probability for each pixel of the ablation scan image illustrative of the static anatomical ablation.

Temporal mapping of thermal ablation areas

The invention provides a method for guiding the acquisition of ultrasound data. The method begins by obtaining ultrasound data from a plurality of data acquisition planes and performing spatial registration of the data acquisition planes. A number of vessels are then identified in each data acquisition plane. A location of a vessel bifurcation is then identified based on the spatial registration of the data acquisition planes and the number of vessels in each data acquisition plane. A guidance instruction is generated based on the location of the vessel bifurcation, wherein the guidance instruction is adapted to indicate a location to obtain further ultrasound data.

Systems and methods for guided ultrasound data acquisition

A method () and device for deriving an estimate of intracranial blood pressure based on motion data for a wall of an intracranial blood vessel, intracranial blood flow velocity, and a blood pressure signal measured at a location outside the brain. The method is based on identifying () a time offset between the two intracranial signals (vessel wall movement and vessel blood flow), and then applying () this offset to the blood pressure signal acquired from outside the brain to obtain a fourth signal, indicative of estimated intracranial blood pressure.

Intracranial blood pressure estimation method and device

The invention relates to a system, an ultrasound probe and a corresponding method for measuring arterial parameters using non-imaging ultrasound. The system comprises an acquisition unit for acquiring doppler ultrasound signal from a blood vessel and a processing unit for processing the acquired doppler ultrasound signal and to determine the changes in the blood vessel through the measurements of at least Peak Systolic Velocity (PSV) and Pulse Wave Velocity (PWV). The acquisition unit comprises an ultrasound probe having a plurality of transducer elements arranged in a grid configuration, and comprising a first probe () and a second probe () detachably connected to each other. In the split configuration the ultrasound probe is provided to measure the PWV globally between the carotid and femoral arteries, or the PSV and PWV locally and simultaneously. In the integrated configuration the PSV or PWV may be measured locally.

Ultrasound probe, system and method for measuring arterial parameters using non-imaging ultrasound

A system for performing ablation includes an ablation device () configured to ablate tissue in accordance with control parameters and configured to make measurements during the ablation process. An imaging system () is configured to measure an elastographic related parameter to monitor ablation progress. A parameter estimation and monitoring module () is configured to receive the measurements from the ablation device and/or the elastographic related parameter to provide feedback to adaptively adjust imaging parameters of the imaging device at different times during an ablation process.

System and method for adaptive ablation and therapy based on elastography monitoring

The present disclosure describes ultrasound systems and methods configured to determine the elasticity of a target tissue. Systems can include an ultrasound transducer configured to acquire echoes responsive to ultrasound pulses transmitted toward the tissue, which may include a region of increased stiffness. Systems can also include a beamformer configured to control the transducer to transmit a push pulse into the tissue, thereby generating a shear wave in the region of increased stiffness. The beamformer can be configured to control the transducer to emit tracking pulses adjacent to the push pulse. Systems can further include a processor configured to determine a displacement amplitude of the shear wave and based on the amplitude, generate a qualitative tissue elasticity map of the tissue. The processor can combine the qualitative map with a quantitative map of the same tissue, and based on the combination, determine a boundary of the region of increased stiffness.

Shear wave amplitude reconstruction for tissue elasticity monitoring and display

Systems, devices, and methods are provided to provide workflow assistance to an operator during a medical imaging procedure, such as a Doppler ultrasound evaluation of a body vessel of a subject. A sensor such as a gyroscope () may be integrated in an external ultrasound probe (). Workflow assistance may be provided to position the ultrasound probe () to make accurate flow measurements of fluid within the vessel, such as by coupling system color flow information with gyroscope angles. The workflow assistance may also assist a user in identifying a perpendicular orientation of the ultrasound to be used as a reference in making Doppler measurements. The system may also be used to create a vessel map.

Workflow assistance for medical doppler ultrasound evaluation

An interventional tool stepper () employing a frame (), a carriage (), an optional gear assembly (), and an optional grid template(). The frame () is structurally configured to be positioned relative to an anatomical region for holding an interventional tool () relative to the anatomical region. The carriage () is structurally configured to hold the interventional tool () relative to the anatomical region. The gear assembly () is structurally configured to translate and/or rotate the carriage () relative to the frame (). The grid template () is structurally configured to guide one or more additional interventional tools () relative to the anatomical region. The frame (), the carriage (), the optional gear assembly () and the optional grid template () have an electromagnetic-compatible material composition for minimizing any distortion by the interventional tool stepper () of an electromagnetic field.

Interventional tool stepper for electromagnetic tracking

A method for aligning spatially different subvolumes of ultrasonic data of a blood vessel comprising: acquiring temporally discrete signals of a blood vessel with elements of a two dimensional array of ultrasonic transducer elements from spatially different depths of scanning opposed by each transducer element, said array being located in a first position with respect to the blood vessel during the acquiring; Doppler processing the temporally discrete signals received from each transducer element to produce spectral Doppler data of the scanning depth opposed by each transducer element; producing a first three dimensional map of the spectral Doppler data in spatial relationship to the position of the array with respect to the blood vessel; acquiring temporally discrete signals of the blood vessel with elements of the two dimensional array of ultrasonic transducer elements from spatially different depths of scanning opposed by each transducer element, said array being located in a second position with respect to the blood vessel during the acquiring; Doppler processing the temporally discrete signals received from each transducer element to produce spectral Doppler data of the scanning depth opposed by each transducer element; producing a second three dimensional map of the spectral Doppler data in spatial relationship to the position of the array with respect to the blood vessel; aligning the first three dimensional map with the second three dimensional map on the basis of one or more regions of matching spectral Doppler data of the two map; and producing a combined three dimension map of the blood flow of the vessel from the aligned first and second three dimensional maps.

Method for aligning spatially different subvolumes of ultrasonic data of a blood vessel

A system for boundary identification includes a memory () to store shear wave displacements through a medium as a displacement field including a spatial component and a temporal component. A directional filter () filters the displacement field to provide a directional displacement field. A signal processing device () is coupled to the memory to execute a boundary estimator () to estimate a tissue boundary in a displayed image based upon a history of the directional displacement field accumulated over time.

Using reflected shear waves for monitoring lesion growth in thermal ablations

The invention relates to a temperature distribution determination apparatus for determining a temperature distribution within an object (), while an energy application element () applies energy to the object, especially while an ablation procedure for ablating a tumor within an organ is performed. A time-dependent first ultrasound signal is generated for an ultrasound measurement region within the object and a temperature distribution within the object is determined based on the generated time-dependent first ultrasound signal and based on a position of the energy application element () relative to the ultrasound measurement region tracked over time. This can ensure that always the correct position of the energy application element, which may be regarded as being a heat source, is considered, even if the energy application element moves, for instance, due to a movement of the object. This can lead to a more accurate determination of the temperature distribution.

Temperature distribution determination apparatus

A medium of interest is interrogated according to ultrasound elastography imaging. A preliminary elasticity-spatial-map is formed. This map is calibrated against a reference elasticity-spatial-map that comprises an array () of different () elasticity values. The reference map is formed to be reflective of ultrasonic shear wave imaging of a reference medium. The reference medium is not, nor located at, the medium of interest, and may be homogeneous. Shear waves that are propagating in a medium are tracked by interrogating the medium. From tracking locations on opposite sides of an ablated-tissue border, propagation delay of a shear wave in the medium and of another shear wave are measured. The two shear waves result from respectively different pushes () that are separately issued. A processor decides, based on a function of the two delays, that the border crosses between the two locations. The calibrated map is dynamically updated and may include post-ablation border expansion () and time-annotated previous stages ().

Calibration of ultrasonic elasticity-based lesion-border mapping

A non-imaging diagnostic ultrasound system for carotid artery diagnosis has a two dimensional array probe () with a low element count and relatively large element size which can cover an area of the carotid artery at its bifurcation. The elements are operated independently with no phasing, and detect Doppler flow spatially beneath each element. The system produces maps of carotid blood flow in two or three dimensions and can assemble an extended view of the flow by matching segments of the carotid flow as the probe is moved over the vessel. Once the carotid artery has been localized, the degree of stenosis is assessed by automated measurements of peak systolic velocity and blood flow turbulence.

System for automated screening of carotid stenosis

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Briarcliff Manor, NY, United States of America

Shriram Sethuraman