-
公开(公告)号：US10792015B2
公开(公告)日：2020-10-06
申请号：US14920778
申请日：2015-10-22
Applicant: Verasonics, Inc.
Inventor： John Flynn , Ronald Elvin Daigle
Abstract: Vector Doppler Imaging (VDI) improves on conventional Color Doppler Imaging (CDI) by giving speed and direction of blood flow at each pixel of a display generated by a computing system. Multiple angles of Plane wave transmissions (PWT) via an ultrasound transducer conveniently give projected Doppler measurements over a wide field of view, providing enough angular diversity to identify velocity vectors in a short time window while capturing transitory flow dynamics. A fast, aliasing-resistant velocity vector estimator for PWT is presented, and VDI imaging of a carotid artery with a 5 MHz linear array is shown using a novel synthetic particle flow visualization method.
-
公开(公告)号：US09028411B2
公开(公告)日：2015-05-12
申请号：US13651957
申请日：2012-10-15
Applicant: Verasonics, Inc.
Inventor： Ronald Elvin Daigle
CPC classification number: A61B8/5207 , A61B8/06 , A61B8/13 , A61B8/14 , A61B8/4483 , A61B8/466 , A61B8/481 , A61B8/483 , A61B8/485 , A61B8/488 , A61B8/52 , A61B8/5223 , G01S7/52034 , G01S7/52042 , G01S7/5206 , G01S7/5208 , G01S15/8984 , G01S15/8993 , G01S15/8995
Abstract: An ultrasound imaging system with pixel oriented processing is provided in which an acoustic signal is generated, echoes from the acoustic signal are received at a plurality of receiving elements to obtain echo signals that are then stored, a given pixel is mapped into a region of the stored signals, the mapped region of the stored echo signals is organized into array for the given pixel after which the array is processed to generate a signal response for the given pixel to obtain acoustic information for the given pixel. The system can be implemented entirely on plug-in cards for a commercial PC motherboard. The system and method can be implemented for pixel-oriented or voxel-oriented image processing and display, eliminating intermediate data computations and enabling extensive use of software processing methods. Advantages include improved acquisition of signal dynamic range, flexible acquisition modes for high frame rate 2D, 3D, and Doppler blood flow imaging.
-
公开(公告)号：US12089991B2
公开(公告)日：2024-09-17
申请号：US17747398
申请日：2022-05-18
Applicant: Verasonics, Inc.
Inventor： Laurence C. Brasfield , John A. Flynn , Ronald E. Daigle
CPC classification number: A61B8/44 , G01S7/52017 , G01S7/5202 , G01S7/524 , H02M1/32 , G01S7/5205
Abstract: An ultrasound transceiver that overcomes many of the deficiencies of conventional ultrasound transceivers by providing the ability to transmit high power and high frequency arbitrary waveforms with low distortion and with the ability to monitor the transmit signals through the receiver during the transmit period, the transceiver circuit having a transducer element to emit an ultrasound signal and to receive a reflected ultrasound signal, a transformer circuit having a transformer with a secondary winding coupled to the transducer element and a primary winding, an H-Bridge transmit waveform circuit coupled to the primary winding of the transformer to generate a transmit waveform signal to the transducer element via the transformer, an FET clamp coupled to the secondary winding of the transformer, and a receiver circuit having an input coupled to the FET clamp.
-
公开(公告)号：US11619730B2
公开(公告)日：2023-04-04
申请号：US15563387
申请日：2016-03-30
Applicant: VERASONICS, INC.
Inventor： John A. Flynn , Lauren S. Pflugrath
Abstract: A method that includes transmitting coded waveforms simultaneously on multiple elements for several frames, constructing a first multi-input, single output (MISO) system from the codes to model transmit-receive paths, solving system and RF data observation by linear model theory, giving an IR set for the medium, and applying the estimates to a secondary MISO system, constructed by analogy to the first, but with pulses convenient for beamforming in the form of a focused set of single-cycle pulses for ideal focused reconstruction.
-
公开(公告)号：US20190388065A1
公开(公告)日：2019-12-26
申请号：US16560851
申请日：2019-09-04
Applicant: Verasonics, Inc.
Inventor： John Flynn , Ronald Elvin Daigle
Abstract: Vector Doppler Imaging (VDI) improves on conventional Color Doppler Imaging (CDI) by giving speed and direction of blood flow at each pixel of a display generated by a computing system. Multiple angles of Plane wave transmissions (PWT) via an ultrasound transducer conveniently give projected Doppler measurements over a wide field of view, providing enough angular diversity to identify velocity vectors in a short time window while capturing transitory flow dynamics. A fast, aliasing-resistant velocity vector estimator for PWT is presented, and VDI imaging of a carotid artery with a 5 MHz linear array is shown using a novel synthetic particle flow visualization method.
-
Patent Agency Ranking
公开(公告)号：US10302750B2
公开(公告)日：2019-05-28
申请号：US14905434
申请日：2014-07-17
Applicant: Verasonics, Inc.
Inventor： John A. Flynn , Peter J. Kaczkowski , Brian J. Pflugrath , Lauren S. Pflugrath
Abstract: A method and system for generating arbitrary ultrasonic waveforms using a tri-state transmitter. Three variants of the device are described to provide functionality in three usage scenarios.
-
7.发明申请公开(公告)号：US20180088220A1
公开(公告)日：2018-03-29
申请号：US15563387
申请日：2016-03-30
Applicant: VERASONICS, INC.
Inventor： John A. Flynn , Lauren S. Pflugrath
CPC classification number: G01S7/52093 , A61B8/06 , A61B8/14 , A61B8/4483 , A61B8/485 , A61B8/488 , A61B8/5207 , A61B8/5276 , B06B1/0215 , B06B2201/76 , G01S7/5202 , G01S7/52077 , G01S15/8927 , G01S15/8959 , G01S15/8979 , G01S15/8997 , G10K11/346
Abstract: A method that includes transmitting coded waveforms simultaneously on multiple elements for several frames, constructing a first multi-input, single output (MISO) system from the codes to model transmit-receive paths, solving system and RF data observation by linear model theory, giving an IR set for the medium, and applying the estimates to a secondary MISO system, constructed by analogy to the first, but with pulses convenient for beamforming in the form of a focused set of single-cycle pulses for ideal focused reconstruction.
-
公开(公告)号：US20170156704A1
公开(公告)日：2017-06-08
申请号：US14920778
申请日：2015-10-22
Applicant: Verasonics, Inc.
Inventor： John Flynn , Ronald Elvin Daigle
Abstract: Vector Doppler Imaging (VDI) improves on conventional Color Doppler Imaging (CDI) by giving speed and direction of blood flow at each pixel of a display generated by a computing system. Multiple angles of Plane wave transmissions (PWT) via an ultrasound transducer conveniently give projected Doppler measurements over a wide field of view, providing enough angular diversity to identify velocity vectors in a short time window while capturing transitory flow dynamics. A fast, aliasing-resistant velocity vector estimator for PWT is presented, and VDI imaging of a carotid artery with a 5 MHz linear array is shown using a novel synthetic particle flow visualization method.
-
公开(公告)号：US20160000407A1
公开(公告)日：2016-01-07
申请号：US14707383
申请日：2015-05-08
Applicant: Verasonics, Inc.
Inventor： Ronald Elvin Daigle
CPC classification number: A61B8/5207 , A61B8/06 , A61B8/13 , A61B8/14 , A61B8/4483 , A61B8/466 , A61B8/481 , A61B8/483 , A61B8/485 , A61B8/488 , A61B8/52 , A61B8/5223 , G01S7/52034 , G01S7/52042 , G01S7/5206 , G01S7/5208 , G01S15/8984 , G01S15/8993 , G01S15/8995
Abstract: An ultrasound imaging system with pixel oriented processing is provided in which an acoustic signal is generated, echoes from the acoustic signal are received at a plurality of receiving elements to obtain echo signals that are then stored, a given pixel is mapped into a region of the stored signals, the mapped region of the stored echo signals is organized into array for the given pixel after which the array is processed to generate a signal response for the given pixel to obtain acoustic information for the given pixel. The system can be implemented entirely on plug-in cards for a commercial PC motherboard. The system and method can be implemented for pixel-oriented or voxel-oriented image processing and display, eliminating intermediate data computations and enabling extensive use of software processing methods. Advantages include improved acquisition of signal dynamic range, flexible acquisition modes for high frame rate 2D, 3D, and Doppler blood flow imaging.
-
10.发明授权Estimation and display for vector doppler imaging using plane wave transmissions 有权使用平面波传输的矢量多普勒成像的估计和显示公开(公告)号：US09192359B2
公开(公告)日：2015-11-24
申请号：US14348007
申请日：2012-10-19
Applicant: Verasonics, Inc.
Inventor： John Flynn , Ronald Elvin Daigle
CPC classification number: A61B8/5223 , A61B8/06 , A61B8/14 , A61B8/4483 , A61B8/463 , A61B8/488 , A61B8/5207 , A61B8/5269 , G01F1/663 , G01S15/8977 , G01S15/8979 , G01S15/8984 , G01S15/8995
Abstract: Vector Doppler Imaging (VDI) improves on conventional Color Doppler Imaging (CDI) by giving speed and direction of blood flow at each pixel of a display generated by a computing system. Multiple angles of Plane wave transmissions (PWT) via an ultrasound transducer conveniently give projected Doppler measurements over a wide field of view, providing enough angular diversity to identify velocity vectors in a short time window while capturing transitory flow dynamics. A fast, aliasing-resistant velocity vector estimator for PWT is presented, and VDI imaging of a carotid artery with a 5 MHz linear array is shown using a novel synthetic particle flow visualization method.
Abstract translation: 矢量多普勒成像（VDI）通过在由计算系统生成的显示器的每个像素处给出血流速度和方向来改善常规彩色多普勒成像（CDI）。 通过超声波换能器的多个平面波传播角度（PWT）可以方便地在宽视野范围内给出投影多普勒测量，从而提供足够的角度分集，以在短时间窗口中识别速度矢量，同时捕获瞬态流动动力学。 提出了一种用于PWT的快速，抗混叠速度矢量估计器，并且使用新的合成粒子流可视化方法示出了具有5MHz线性阵列的颈动脉的VDI成像。
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.016 seconds)
