公开(公告)号：US10180482B2

公开(公告)日：2019-01-15

申请号：US14405321

申请日：2013-06-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  Wei Lin

IPC: G01R33/565 ,  G01R33/385 ,  G01R33/561 ,  G01R33/54 ,  G01R33/28

Abstract: An imaging system (5) includes a plurality of coil channel receivers (26) and one or more processors or modules (38). The plurality of coil channel receivers (26) demodulate magnetic resonance data from a multi-channel coil (10) which includes a plurality of coil elements (16) spatially separated, each element transmitting magnetic resonance data on a corresponding channel (25). The one or more processors or modules (38) are configured to detect (26) artifacts in the magnetic resonance data on each channel individually. The one or more processors or modules (38) are further configured to select (27) the magnetic resonance data from the channels which include detected artifacts at or below a threshold artifact level and reconstruct (32) one or more images using the selected magnetic resonance data.

公开(公告)号：US10429471B2

公开(公告)日：2019-10-01

申请号：US15579623

申请日：2016-06-07

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Chenguang Zhao ,  Feng Huang ,  Ming Yang

IPC: G01R33/48 ,  G01R33/561

Abstract: The invention provides a device for producing a magnetic resonance image. The device comprises a collecting unit adapted for collecting k space samples that are located on a non-Cartesian grid in a non-Cartesian coordinate space or non-uniformly located on a Cartesian grid in a Cartesian coordinate space, the non-Cartesian/Cartesian coordinate space adapted to be decomposed into a plurality of subspaces, each of which extends along one or more coordinate axes of the non-Cartesian/Cartesian coordinate space; a weight calculation unit (203) adapted for calculating a decomposed sample density weight function of the k space samples in each individual subspace and determining a density weight function in the non-Cartesian/Cartesian coordinate space via a multiplication of the decomposed sample density weight functions of the k space samples in the plurality of subspaces; a gridding unit adapted for interpolating the k space samples in the non-Cartesian/Cartesian coordinate space onto a uniform Cartesian grid in a k space based on the density weight function of the k space samples in the non-Cartesian/Cartesian coordinate space; and a reconstructing unit adapted for reconstructing the magnetic resonance image based on the interpolated k space samples. By means of the invention, fast, preferably on-demand, calculation of the sampling density weights may be achieved.

公开(公告)号：US20150115963A1

公开(公告)日：2015-04-30

申请号：US14405321

申请日：2013-06-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  Wei Lin

IPC: G01R33/565 ,  G01R33/28 ,  G01R33/54 ,  G01R33/385 ,  G01R33/561

CPC classification number: G01R33/565 ,  G01R33/283 ,  G01R33/385 ,  G01R33/543 ,  G01R33/5611 ,  G01R33/56509

Abstract: An imaging system (5) includes a plurality of coil channel receivers (26) and one or more processors or modules (38). The plurality of coil channel receivers (26) demodulate magnetic resonance data from a multi-channel coil (10) which includes a plurality of coil elements (16) spatially separated, each element transmitting magnetic resonance data on a corresponding channel (25). The one or more processors or modules (38) are configured to detect (26) artifacts in the magnetic resonance data on each channel individually. The one or more processors or modules (38) are further configured to select (27) the magnetic resonance data from the channels which include detected artifacts at or below a threshold artifact level and reconstruct (32) one or more images using the selected magnetic resonance data.

Abstract translation: 成像系统（5）包括多个线圈通道接收器（26）和一个或多个处理器或模块（38）。 多个线圈通道接收器（26）解调来自多通道线圈（10）的磁共振数据，该多通道线圈（10）包括空间分离的多个线圈元件（16），每个元件在对应的通道（25）上传输磁共振数据。 一个或多个处理器或模块（38）被配置为分别检测（26）每个通道上的磁共振数据中的伪影。 一个或多个处理器或模块（38）还被配置为从包括检测到的伪像的信道中选择（27）磁共振数据，其包括在阈值伪影等级以下或低于阈值伪像级别，并使用所选择的磁共振来重建（32）一个或多个图像 数据。

公开(公告)号：US11255938B2

公开(公告)日：2022-02-22

申请号：US15517998

申请日：2015-10-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  Zhigang Wu

IPC: G01R33/483 ,  G01R33/561 ,  G01R33/565 ,  A61B5/00 ,  G01R33/48 ,  G01R33/563 ,  A61B5/055

Abstract: The present invention provides a magnetic resonance imaging system for imaging a subject by a multi-shot imaging. The magnetic resonance imaging system comprises an acquiring unit for acquiring MR raw data corresponding to a plurality of shots; an imaging unit for generating a plurality of folded images from the MR raw data, wherein each of the plurality of folded images is generated from a subset of the MR raw data; a deriving unit for deriving magnitude of each pixel of each folded image; a detecting unit for detecting a motion of the subject during the multi-shot imaging based on similarity measurements of any two folded images of the plurality of folded images, wherein the detecting unit further comprises a first deriving unit configured to derive the measured similarities; and a reconstructing unit for reconstructing a MR image of the subject based on MR raw data obtained according to a detection result of the detecting unit. Since the partially acquired MR raw data is used for motion detection directly, it would be more rapid and stable.

公开(公告)号：US10386440B2

公开(公告)日：2019-08-20

申请号：US15322760

申请日：2015-06-30

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  George Randall Duensing ,  Bida Zhang

IPC: G01V3/00 ,  G01R33/565 ,  G01R33/48 ,  G01R33/563 ,  G01R33/56 ,  G01R33/561

Abstract: A magnetic resonance (MR) imaging (MRI) system (100, 1500), includes at least one controller (110, 1510) configured to: perform a multi-shot image acquisition process to acquire MR information for at least one multi-shot image set; train a convolution kernel including data on at least a portion of the MR information obtained without the use of the gradient or by using a self-training process. The convolution kernel includes convolution data. The MR information obtained with the use of a gradient for at least two of the image shots of the at least one multi-shot image set is iteratively convolved with the trained convolution kernel. The synthetic k-space data for the at least two image shots of the at least one multi-shot image set is projected into image space. The projected synthetic k-space data that are projected into the image space to form image information.

公开(公告)号：US10302726B2

公开(公告)日：2019-05-28

申请号：US15322502

申请日：2015-07-01

Applicant: KONINKLIJKE PHILIPS N.V. ,  TSINGHUA UNIVERSITY

Inventor： Feng Huang ,  Hua Guo ,  Zhe Zhang ,  Bi Da Bd Zhang

IPC: G01V3/00 ,  G01R33/561 ,  G01R33/563 ,  G01R33/565

Abstract: This invention provides an image processing method and apparatus for reconstructing an image of a site of a subject. The image processing method comprises: generating a first estimated phase of each shot of multiple shots of the site by sensitivity encoding based on shot data of the corresponding shot obtained for the site; reconstructing a first multiplexed sensitivity encoded image based on the first estimated phase of each shot and shot data of each shot; generating a second estimated phase of each shot of the multiple shots by regularized sensitivity encoding using the first multiplexed sensitivity encoded image; and reconstructing a second multiplexed sensitivity encoded image based on the second estimated phase of each shot and shot data of each shot. In this way, the quality of the finally reconstructed image in magnetic resonance imaging is further improved.

公开(公告)号：US20140309519A1

公开(公告)日：2014-10-16

申请号：US14368306

申请日：2012-12-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  Arne Reykowski ,  George Randall Duensing

IPC: A61B5/055 ,  A61B5/00 ,  A61N5/10 ,  A61B5/01 ,  A61N7/02

CPC classification number: A61B5/01 ,  A61B5/015 ,  A61B5/055 ,  A61B5/7275 ,  A61B5/7282 ,  A61B5/742 ,  A61N5/1048 ,  A61N7/02 ,  G01R33/4804 ,  G01R33/4808 ,  G06F19/00

Abstract: A magnetic resonance scanner (12) is configured for themographic imagin. One or more processors (28) receive (56) thermal image data from the magnetic resonance scanner and reconstruct at least one thermal image in which each voxel includes a measure of temperature change. The one or more processors identify (58) thermally abnormal voxels. A display (44) displays at least one reconstructed image with the identified abnormal thermal locations.

Abstract translation: 磁共振扫描器（12）被配置用于人造想象。 一个或多个处理器（28）从磁共振扫描器接收（56）热图像数据，并重构至少一个热图像，其中每个体素包括温度变化的测量。 一个或多个处理器识别（58）热异常体素。 显示器（44）显示具有所识别的异常热位置的至少一个重建图像。

公开(公告)号：US10746832B2

公开(公告)日：2020-08-18

申请号：US16064665

申请日：2016-12-15

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  Zhigang Wu ,  Zhongbiao Wu

IPC: G01R33/563 ,  G01R33/565 ,  A61B5/055 ,  G01R33/561 ,  G06T7/20

Abstract: A method and apparatus for magnetic resonance (MR) diffusion tensor imaging (DTI) with minimizes artifacts caused by motion-induced changes of the diffusion encoding. An object (10) is subject to at least one shot of a multi-echo imaging sequence to generate a train of echo signals. The multi-echo imaging sequence includes diffusion gradients, acquiring the echo signals for different diffusion gradients, detecting motion of the object (10) during acquisition of the echo signals, determining a plurality of motional states of the object (10) based on the detected motion, wherein the object (10) is stationary in each detected motional state, determining directions of the diffusion gradients relative to a reference frame of the object (10) for detected motional states of the object (10), respectively, and deriving diffusion coefficients from the acquired echo signals for the determined relative directions of the diffusion gradients.

公开(公告)号：US10698062B2

公开(公告)日：2020-06-30

申请号：US15781197

申请日：2016-12-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ming Yang ,  Feng Huang ,  Yu Li Huang

IPC: G01R33/563 ,  A61B5/055 ,  A61B5/00 ,  G01R33/56 ,  G01R33/565

Abstract: Embodiments of the present invention provide a method for generating a synthetic diffusion image. The method comprises the steps of acquiring multiple sets of initial diffusion scan data by means of diffusion weighted magnetic resonance scans at multiple initial b-values, deriving an initial diffusion image from at least part of the initial diffusion scan data, acquiring target diffusion scan data by means of a diffusion weighted magnetic resonance scan at a target b-value higher than each of the initial b-values, and generating the synthetic diffusion image by performing a cost function based reconstruction to apply a fidelity term in k space to the synthetic diffusion image based on at least the initial diffusional image, and the target diffusion scan data.

公开(公告)号：US10379188B2

公开(公告)日：2019-08-13

申请号：US14916200

申请日：2014-08-27

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Feng Huang ,  Enhao Gong

IPC: G01R33/561 ,  G01R33/50 ,  G01R33/56 ,  G01R33/565

Abstract: A magnetic resonance (MR) imaging system may include at least one controller which may acquire echo information of a region of interest (ROI). The echo information may include first image information suitable for reconstructing at least part of a first image at a selected contrast. The MR imaging system can obtain previously-reconstructed image information of one or more previously-reconstructed images having a contrast different than the selected contrast; extract information from the previously-reconstructed image information; determine spatially adaptive regularization weights for regularized reconstruction based upon the extracted information; and/or reconstruct the first image in formation in accordance with the spatially adaptive regularization weights and the echo information.