公开(公告)号：US20150160319A1

公开(公告)日：2015-06-11

申请号：US14501195

申请日：2014-09-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang Cheon CHOI ,  Joon Soo KIM ,  Yeol Min SEONG ,  Yang Lim CHOI ,  Praveen GULAKA

IPC: G01R33/561 ,  G01R33/341 ,  G01R33/34 ,  G01R33/48 ,  G01R33/54

CPC classification number: G01R33/5611

Abstract: An MRI apparatus includes: a receive coil assembly including channels, and configured to receive an MR signal from an object; a data generator configured to generate undersampled image data on a k-space based on the MR signal; and a reconstructed image generator configured to generate a first reconstructed image from the undersampled image data using a parallel imaging method, and a second reconstructed image from the undersampled image data using compressed sensing. According to the MRI apparatus, since image reconstruction is performed using random undersampled image data, a parallel imaging method, and compressed sensing, it is possible to increase a speed of image acquisition and, at the same time, to improve the quality of images.

Abstract translation: MRI装置包括：包括通道的接收线圈组件，并且被配置为从对象接收MR信号; 数据生成器，被配置为基于所述MR信号在k空间上生成欠采样图像数据; 以及重构图像生成器，被配置为使用并行成像方法从来自欠采样图像数据生成第一重建图像，以及使用压缩感测从来自欠采样图像数据的第二重建图像生成。 根据MRI装置，由于使用随机欠采样图像数据，并行成像方法和压缩感测进行图像重建，因此可以增加图像采集的速度，并且同时提高图像的质量。

公开(公告)号：US20140210467A1

公开(公告)日：2014-07-31

申请号：US14167152

申请日：2014-01-29

Applicant: The Trustees of the University of Pennsylvania ,  Samsung Electronics Co., Ltd.

Inventor： Jin Young HWANG ,  Joon Soo KIM ,  Jae Moon JO ,  Yang Lim CHOI ,  Jongho LEE

IPC: G01R33/56

CPC classification number: G01R33/56 ,  G01R33/5602 ,  G01R33/5615 ,  G01R33/56536

Abstract: An MRI system acquires a susceptibility-weighted image by acquiring a first RF echo signal in a first echo time for providing an image exclusive of susceptibility-weighting and acquiring a second RF echo signal in a second echo time longer than the first echo time for providing an image including susceptibility-weighting. A compensation gradient field is applied for compensating for field inhomogeneity and in response, a third RF echo signal is acquired in a third echo time longer than the second echo time. First, second and third images are generated in response to data derived from the first, second and third RF echo signals respectively and data of the first, second and third images is combined to provide image data representing an image compensating for magnetic resonance signal attenuation in the second image.

Abstract translation: MRI系统通过在第一回波时间中获取第一RF回波信号来获取敏感度加权图像，以提供除了敏感度加权之外的图像，并且以比第一回波时间长的第二回波时间获取第二RF回波信号，以提供 包括敏感度加权的图像。 应用补偿梯度场来补偿场不均匀性，作为响应，在比第二回波时间长的第三回波时间中获取第三RF回波信号。 首先，响应于分别从第一，第二和第三RF回波信号导出的数据产生第二和第三图像，并且组合第一，第二和第三图像的数据以提供表示补偿磁共振信号衰减的图像的图像数据 第二个图像。

公开(公告)号：US20130200899A1

公开(公告)日：2013-08-08

申请号：US13763120

申请日：2013-02-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yong Seok YI ,  Young Cheol KWON ,  Joon Soo KIM ,  Hyug Rae CHO

IPC: H04L27/00 ,  G01R33/34

CPC classification number: H04L27/00 ,  G01R33/34092 ,  G01R33/3621 ,  G01R33/3692

Abstract: A magnetic resonance imaging apparatus provided with an RF receiver having a power producing module configured to produce power that is to be supplied to the RF receiver through an RF pulse which is applied to a subject from an RF transmitting coil, the magnetic resonance imaging apparatus including an RF receiver provided with an RF transmitting coil configured to apply an RF pulse to a subject to excite an atomic nucleus, and with a power producing module configured to produce power by receiving the RF pulse applied by the RF transmitting coil.

Abstract translation: 一种具有RF接收机的磁共振成像设备，其具有功率产生模块，该功率产生模块被配置为通过从RF发射线圈施加到对象的RF脉冲产生将被提供给RF接收器的功率，所述磁共振成像设备包括 设置有RF发射线圈的RF接收器，其被配置为向对象施加RF脉冲以激发原子核，并且功率产生模块被配置为通过接收由RF发射线圈施加的RF脉冲来产生功率。

公开(公告)号：US20140218031A1

公开(公告)日：2014-08-07

申请号：US14172136

申请日：2014-02-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dae Ho LEE ,  Seung Je CHOI ,  Joon Soo KIM

IPC: G01R33/387

CPC classification number: G01R33/56518

Abstract: A magnetic resonance imaging apparatus includes a magnetic assembly including a main magnet and a gradient coil unit and forming a static magnetic field and a gradient magnetic field in the bore thereof, and a gradient controller applying a test gradient waveform to the magnetic assembly, and compensating for a distortion of the magnetic field gradients, caused by eddy currents, by reflecting the actual shape of the applied test gradient waveform.

Abstract translation: 磁共振成像装置包括：磁性组件，包括主磁体和梯度线圈单元，并在其孔中形成静磁场和梯度磁场;以及梯度控制器，将测试梯度波形应用于磁组件，并补偿 通过反映所应用的测试梯度波形的实际形状，由涡流引起的磁场梯度失真。