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公开(公告)号：US20170234955A1
公开(公告)日：2017-08-17
申请号：US15427151
申请日：2017-02-08
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sang-cheon CHOI , Dae-ho LEE , Jin-young HWANG
IPC: G01R33/561 , G01R33/48 , G01R33/56
CPC classification number: G01R33/5611 , G01R33/4835
Abstract: A method and an apparatus are provided for reconstructing a plurality of magnetic resonance (MR) images of an object. The method includes synthesizing first MR images of the object to generate a synthesized first MR image, acquiring a k-space data set of the synthesized first MR image, and determining a weighting coefficient representing a relationship between the acquired k-space data set and a k-space data set of a respective one of the first MR images, for each of the first MR images. The method further includes obtaining a multi-band MR image of the object by applying a multi-band radio frequency signal to the object, and reconstructing second MR images from the obtained multi-band MR image, based on the determined weighting coefficient for each of the first MR images.
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Patent Agency Ranking
公开(公告)号：US20170131374A1
公开(公告)日：2017-05-11
申请号：US15347110
申请日：2016-11-09
Inventor： Sang-cheon CHOI , Jongho LEE , Jeehun KIM , Yoonho NAM
IPC: G01R33/48 , G01R33/567
CPC classification number: G01R33/4828 , G01R33/482 , G01R33/561 , G01R33/5611 , G01R33/5616
Abstract: A magnetic resonance imaging (MRI) apparatus, including a scanner configured to emit at least one radio frequency (RF) signal to an object during one repetition time (TR), and to receive echo signals emitted from the object; and a controller configured to transmit one or more control signals to the scanner to control the scanner, wherein the controller may be further configured to control the scanner to emit an RF excitation pulse and a refocusing pulse to the object during the one TR, control the scanner to receive a first echo signal corresponding to a first line of a k-space before an echo time (TE), and to receive a second echo signal corresponding to a second line of the k-space after the TE, and reconstruct a magnetic resonance (MR) image based on the k-space.
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公开(公告)号：US20160349340A1
公开(公告)日：2016-12-01
申请号：US15166810
申请日：2016-05-27
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sang-cheon CHOI
IPC: G01R33/48 , G01R33/561
CPC classification number: G01R33/4818 , G01R33/4822 , G01R33/4835 , G01R33/5611
Abstract: Provided are an apparatus and method for sampling magnetic resonance (MR) signals received from each of a plurality of channel coils included in a radio frequency (RF) multi-coil such that intervals between two acquired signals that are adjacent in a first axis direction of a 3D K-space are non-uniform; and restoring an MR image by using the received MR signals.
Abstract translation: 提供了一种用于从包括在射频（RF）多线圈中的多个通道线圈中的每一个接收的磁共振（MR）信号进行采样的装置和方法，使得在第一轴方向上相邻的两个获取信号之间的间隔 3D K空间是不均匀的; 以及通过使用所接收的MR信号来恢复MR图像。
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公开(公告)号：US20150108985A1
公开(公告)日：2015-04-23
申请号：US14522031
申请日：2014-10-23
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sang-cheon CHOI
IPC: G01R33/561 , G01R33/385 , G06T5/00 , G01R33/48
CPC classification number: G01R33/5611 , G01R33/34092 , G01R33/3852 , G01R33/4818 , G06T5/002 , G06T2207/10088 , G06T2207/20182
Abstract: Disclosed are a magnetic resonance imaging (MRI) apparatus and method. The MRI apparatus includes a data acquirer, which performs under-sampling of MR signals, respectively received from a plurality of channel coils included in a radio frequency (RF) multi-coil, at non-uniform intervals to acquire a plurality of pieces of line data, and an image processor that restores a plurality of pieces of K-space data respectively corresponding to the plurality of channel coils by using a relationship between the acquired plurality of pieces of line data, thereby restoring an MR image with reduced aliasing artifacts.
Abstract translation: 公开了磁共振成像（MRI）装置和方法。 MRI装置包括数据获取器，其以非均匀间隔执行分别从包括在射频（RF）多线圈中的多个通道线圈接收的MR信号的欠采样，以获取多条线 数据和图像处理器，其通过使用获取的多条线数据之间的关系来恢复分别对应于多个通道线圈的多个K空间数据，从而以减少的混叠伪像恢复MR图像。
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公开(公告)号：US20150108977A1
公开(公告)日：2015-04-23
申请号：US14513453
申请日：2014-10-14
Inventor： Su-gil KIM , Yeol-min SEONG , Sang-cheon CHOI
IPC: G01R33/561 , G01R33/563 , G01R33/48 , G01R33/385 , G01R33/58
CPC classification number: G01R33/5611 , G01R33/385 , G01R33/4818 , G01R33/56308 , G01R33/58
Abstract: The MRI apparatus includes a data processor, which time-serially performs undersampling on MR signals respectively received by coil channels included in a radio frequency (RF) multi-coil to acquire undersampled K-t space data, and an image processor that acquires a time-space correlation coefficient, based on noise information of the coil channels, and restores pieces of unacquired line data from the undersampled K-t space data by using the time-space correlation coefficient to acquire restored K-t space data, thereby increasing an accuracy of the time-space correlation coefficient to improve a quality of an image.
Abstract translation: MRI装置包括数据处理器，其对由分别由射频（RF）多线圈中包含的线圈通道分别接收的MR信号进行欠采样，以获取欠采样的Kt空间数据;以及图像处理器，其获取时间空间 相关系数，基于线圈通道的噪声信息，并且通过使用时空相关系数来获取已恢复的Kt空间数据，从欠采样Kt空间数据中恢复未查询线数据，从而提高时空相关性的精度 系数提高了图像的质量。
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公开(公告)号：US20150054507A1
公开(公告)日：2015-02-26
申请号：US14504007
申请日：2014-10-01
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Praveen GULAKA , Sang-cheon CHOI
IPC: G01R33/565 , G01R33/32 , G01R33/48
CPC classification number: G01R33/56509 , G01R33/32 , G01R33/4818 , G01R33/4824 , G01R33/4826 , G01R33/561
Abstract: An apparatus for capturing a magnetic resonance (MR) image includes: a radio frequency (RF) transmitter which transmits an RF pulse sequence including a spiral pulse sequence having at least one spiral trajectory and a first blade having at least one parallel trajectory and intersecting the at least one spiral trajectory on a center of k-space; and a data processor which obtains the MR signal in response to the transmitted RF pulse sequence.
Abstract translation: 用于捕获磁共振（MR）图像的装置包括：射频（RF）发射器，其发射包括具有至少一个螺旋轨迹的螺旋脉冲序列的RF脉冲序列和具有至少一个平行轨迹的第一叶片，并与 在k空间中心的至少一个螺旋轨迹; 以及数据处理器，其响应于发送的RF脉冲序列而获得MR信号。
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