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公开(公告)号：US20160011289A1
公开(公告)日：2016-01-14
申请号：US14857262
申请日：2015-09-17
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sang-cheon CHOI
IPC: G01R33/561 , G01R33/34 , G01R33/48
Abstract: An MRI apparatus includes a data acquirer configured to under-sample MR signals, respectively received from channel coils included in a radio frequency (RF) multi-coil, at non-uniform intervals to acquire pieces of data set; and an image processor configured to restore pieces of K-space data respectively corresponding to the channel coils by using a positional relationship based on a spatial distance between a reference data set among the acquired pieces of data set and at least two of data set among the acquired pieces of data set, in a K-space.
Abstract translation: MRI装置包括：数据获取器，被配置为以非均匀间隔对包含在射频（RF）多线圈中的信道线圈分别接收的MR信号进行低采样，以获取数据集; 以及图像处理器，被配置为通过使用基于所获取的数据集中的参考数据集与所获取的数据集中的至少两个数据集之间的空间距离的位置关系来恢复分别对应于所述信道线圈的K个空间数据的片段 在K空间中获取数据集。
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2.发明申请MAGNETIC RESONANCE IMAGING DEVICE AND METHOD FOR GENERATING MAGNETIC RESONANCE IMAGE 审中-公开磁共振成像装置及产生磁共振图像的方法公开(公告)号：US20170053402A1
公开(公告)日：2017-02-23
申请号：US15307936
申请日：2015-04-30
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Artem Sergeevich MIGUKIN , Dmitry Alexandrovich KOROBCHENKO , Mikhail Yurievich SIROTENKO , Kirill Arthurovich GAVRILYUK , Praveen GULAKA , Sang-cheon CHOI , Michail Nikolaevich RYCHAGOV , Yang Lim CHOI
CPC classification number: G06T7/0012 , A61B5/055 , A61B5/7257 , A61B2576/00 , G01R33/5611 , G06T11/003 , G06T2207/10088 , G06T2207/20081
Abstract: Provided is a magnetic resonance imaging (MRI) apparatus including an acquisition unit configured to acquire an undersampled spectrum in a k-space and a reconstruction unit configured to generate a target image based on the undersampled spectrum, wherein the reconstruction unit includes: a first sub-reconstruction unit configured to perform initial reconstruction on data corresponding to unsampled positions in the k-space by using a Split Bregman algorithm or approximate sparse coding; a second sub-reconstruction unit configured to decompose the initially reconstructed spectrum in the k-space into multiple frequency bands to thereby generate a plurality of individual spectra and perform dictionary learning reconstruction on images respectively corresponding to the decomposed multiple frequency bands by alternating sparse approximation and reconstructing of measured frequencies; and an image generator configured to generate a target image by merging together the reconstructed images respectively corresponding to the multiple frequency bands.
Abstract translation: 提供了一种磁共振成像（MRI）装置，包括：被配置为获取k空间中的欠采样频谱的获取单元和被配置为基于所述欠采样频谱生成目标图像的重建单元，其中，所述重建单元包括：第一子 - 构造单元，被配置为通过使用分割Bregman算法或近似稀疏编码对与k空间中的非取样位置相对应的数据执行初始重构; 第二子重建单元，被配置为将k空间中的初始重建频谱分解成多个频带，从而生成多个单独频谱，并通过交替稀疏近似分别对应于分解的多个频带的图像执行字典学习重建，以及 重建测量频率; 以及图像生成器，被配置为通过将分别对应于所述多个频带的重建图像合并在一起来生成目标图像。
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公开(公告)号：US20140145718A1
公开(公告)日：2014-05-29
申请号：US13846206
申请日：2013-03-18
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Praveen GULAKA , Sang-cheon CHOI
IPC: G01R33/561
CPC classification number: G01R33/56509 , G01R33/32 , G01R33/4818 , G01R33/4824 , G01R33/4826 , G01R33/561
Abstract: When an RF pulse sequence is applied to obtain an MR signal, a pulse sequence and a blade pulse sequence that pass a center of a k-space are applied, and thus an over-sampling at the center of a k-space in a short scanning time may be enabled. Therefore, a method for capturing an MR image that is robust against a motion artifact includes applying a radio frequency (RF) pulse sequence; obtaining an MR signal in response to the applied RF pulse sequence; and generating an MR image from the obtained MR signal.
Abstract translation: 当施加RF脉冲序列以获得MR信号时，施加通过k空间的中心的脉冲序列和刀片脉冲序列，并且因此在短空间中的k空间的中心处的过采样 可能启用扫描时间。 因此，用于捕捉针对运动假象的鲁棒性的MR图像的方法包括应用射频（RF）脉冲序列; 响应所施加的RF脉冲序列获得MR信号; 以及从所获得的MR信号产生MR图像。
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公开(公告)号：US20180100906A1
公开(公告)日：2018-04-12
申请号：US15730132
申请日：2017-10-11
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sang-cheon CHOI
IPC: G01R33/54
CPC classification number: G01R33/54 , G01R33/4828 , G01R33/5602 , G01R33/5607 , G01R33/561 , G01R33/5673
Abstract: A magnetic resonance imaging (MRI) apparatus, including a processor and a memory connected to the processor, wherein the processor is configured to control a radio frequency (RF) coil to apply a first pulse sequence to a first slice from among a plurality of slices of an object during a first RR interval of a heart, and acquire a first magnetic resonance (MR) signal corresponding to the first pulse sequence from the RF coil, control the RF coil to apply a second pulse sequence to a second slice from among the plurality of slices during a second RR interval of the heart, and acquire a second MR signal corresponding to the second pulse sequence from the RF coil, reconstruct a first MR image from the first MR signal, and reconstruct a second MR image from the second MR signal.
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5.发明申请MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD OF OBTAINING MAGNETIC RESONANCE IMAGE THEREOF 审中-公开磁共振成像装置及其获得的磁共振图像的方法公开(公告)号：US20160299205A1
公开(公告)日：2016-10-13
申请号：US15094408
申请日：2016-04-08
Inventor： Sang-cheon CHOI , Yun-ho NAM , Jong-ho LEE , Dae-ho LEE , Yang-su RYU , Han JANG
IPC: G01R33/56
CPC classification number: G01R33/5607 , G01R33/4835
Abstract: A magnetic resonance imaging apparatus includes: a radio frequency (RF) controller configured to control a period of an RF pulse to be applied to an object for a time period that includes a first obtaining time, during which a first inversion RF pulse is applied, and a second obtaining time; and a signal transceiver configured to sequentially receive, during the first obtaining time, a first RF signal for generating a first fluid attenuated inversion recovery (FLAIR) image regarding a first slice of the object and a second RF signal for generating at least one magnetic resonance (MR) image regarding a second slice of the object.
Abstract translation: 磁共振成像装置包括：射频（RF）控制器，被配置为控制要施加到对象的RF脉冲的周期，所述时间段包括施加第一反转RF脉冲的第一获得时间， 和第二获取时间; 以及信号收发器，被配置为在所述第一获得时间期间顺序地接收用于生成关于所述物体的第一切片的第一流体衰减反转恢复（FLAIR）图像的第一RF信号和用于产生至少一个磁共振的第二RF信号 （MR）图像关于对象的第二切片。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180247436A1
公开(公告)日：2018-08-30
申请号：US15756666
申请日：2016-08-02
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Dmitry Alexandrovich KOROBCHENKO , Artem Sergeevich MIGUKIN , Alexey Bronislavovich DANILEVICH , Anna Andreevna VARFOLOMEEVA , Sang-cheon CHOI , Mikhail Yurievich SIROTENKO , Michail Nikolaevich RYCHAGOV
CPC classification number: G06T11/005 , A61B5/055 , G01R33/56 , G01R33/5608 , G01R33/5611 , G06T5/50 , G06T11/00 , G06T11/60 , G06T2210/41
Abstract: Provided are a magnetic resonance (MR) image processing apparatus and a method of reconstructing a MR image. The MR image processing apparatus includes a processor and a memory connected to the processor, wherein the processor is configured to acquire a partially sampled multi-coil k-space with respect to an object and obtain a reconstructed image of the object by reconstructing the partially sampled multi-coil k-space based on a pre-acquired first dictionary and a second dictionary acquired by using the first dictionary.
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7.发明申请公开(公告)号：US20170234954A1
公开(公告)日：2017-08-17
申请号：US15405966
申请日：2017-01-13
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Dae-ho LEE , Sang-cheon CHOI
IPC: G01R33/483 , G01R33/54 , G01R33/56
CPC classification number: G01R33/4835 , G01R33/4818 , G01R33/5607
Abstract: A magnetic resonance imaging (MRI) apparatus includes a radio frequency (RF) controller configured to, for a repetition time period, control the MRI apparatus to apply, to an object, an RF preparation pulse having a coverage area covering two or more slices among a plurality of slices of the object, control the MRI apparatus to apply, to the object, RF pulses respectively corresponding to the plurality of slices, and move the coverage area. The MRI apparatus further includes a data acquirer configured to acquire magnetic resonance signals from the plurality of slices during the repetition time period.
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公开(公告)号：US20150168522A1
公开(公告)日：2015-06-18
申请号：US14539587
申请日：2014-11-12
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Praveen GULAKA , Sang-cheon CHOI
CPC classification number: G01R33/4818 , G01R33/5608 , G01R33/561 , G01R35/005
Abstract: An MRI apparatus includes a data processor for obtaining first k space data including a first unacquired line by undersampling an MR signal based on a first value of an MR parameter, and for obtaining second k space data including a second unacquired line by undersampling an MR signal based on a second value of the MR parameter; and an image processor for interpolating a portion of first unacquired line data in the first k space data based on the second k space data, and a portion of second unacquired line data in the second k space data based on the first k space data.
Abstract translation: MRI装置包括：数据处理器，用于通过基于MR参数的第一值对MR信号进行欠采样来获得包括第一未认证线的第一k空间数据，并且通过对MR信号进行欠采样来获得包括第二未被认可线的第二k空间数据 基于MR参数的第二值; 以及图像处理器，用于基于所述第二k空间数据来插值所述第一k空间数据中的所述第一无序线数据的一部分，以及基于所述第一k空间数据来在所述第二k空间数据中的第二未查询行数据的一部分。
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公开(公告)号：US20150108979A1
公开(公告)日：2015-04-23
申请号：US14516712
申请日：2014-10-17
Inventor： Su-hyung PARK , Yeol-min SEONG , Sang-cheon CHOI
IPC: G01R33/561 , G01R33/385 , G01R33/48
CPC classification number: G01R33/5612 , G01R33/3852 , G01R33/4818 , G01R33/5611
Abstract: A magnetic resonance imaging (MRI) apparatus and method are provided. The MRI apparatus includes a first interpolator configured to generate a plurality of first interpolation data by performing calibration on a plurality of undersampled K-space data obtained from a plurality of channel coils in a radio frequency (RF) multi-coil, respectively, and a second interpolator configured to generate a plurality of second interpolation data by performing calibration on a plurality of filtered data obtained by filtering the first interpolation data using a plurality of high-pass filters.
Abstract translation: 提供磁共振成像（MRI）装置和方法。 MRI装置包括：第一内插器，被配置为通过分别对在射频（RF）多线圈中的多个通道线圈获得的多个欠采样的K空间数据执行校准来生成多个第一内插数据，以及 第二内插器，被配置为通过对通过使用多个高通滤波器对第一插值数据进行滤波而获得的多个滤波数据进行校准来生成多个第二插值数据。
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10.发明申请公开(公告)号：US20190018097A1
公开(公告)日：2019-01-17
申请号：US16070726
申请日：2016-09-27
Inventor： Sang-cheon CHOI , Sang-young ZHO , Jong-ho LEE
IPC: G01R33/483 , A61B5/055 , G01R33/56
Abstract: Provided is a magnetic resonance imaging (MRI) apparatus including: a controller configured to determine a first slice and a second slice so that a difference between a slice number of the first slice of an object and a slice number of the second slice of the object is a predetermined interval value; and a radio frequency (RF) coil configured to transmit a preparation pulse signal including a frequency component enabling the first slice to be excited and transmit an RF signal including a plurality of frequency components so that both the first slice and the second slice are excited.
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