公开(公告)号：US20150374247A1

公开(公告)日：2015-12-31

申请号：US14690561

申请日：2015-04-20

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun-wook PARK ,  Joon-sung CHOI

IPC: A61B5/026 ,  A61B5/055

CPC classification number: A61B5/0263 ,  A61B5/055 ,  A61B2576/02

Abstract: A method of measuring a blood flow velocity of blood flowing in an object includes obtaining first slab data of a first imaging slab to which a first bipolar gradient is applied, obtaining second slab data of a second imaging slab to which a second bipolar gradient is applied, the second imaging slab being moved to a location different from a location of the first imaging slab, and calculating the blood flow velocity based on data included in slices of the first slab data and slices of the second slab data, the slices of the first slab data being located at a same location as the slices of the second slab data on the object.

Abstract translation: 测量在物体中流动的血液的血流速度的方法包括获得施加了第一双极梯度的第一成像板的第一板数据，获得施加了第二双极性梯度的第二成像板的第二板数据 将第二成像板移动到与第一成像板的位置不同的位置，并且基于包括在第一板数据的切片中的数据和第二板数据的切片来计算血流速度， 平板数据位于与对象上的第二平板数据的切片相同的位置。

公开(公告)号：US20170254867A1

公开(公告)日：2017-09-07

申请号：US15432376

申请日：2017-02-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joon-sung CHOI ,  Jin-young HWANG

IPC: G01R33/48 ,  G01R33/483 ,  G01R33/561

CPC classification number: G01R33/4818 ,  G01R33/482 ,  G01R33/4824 ,  G01R33/4833 ,  G01R33/5611 ,  G01R33/5613 ,  G01R33/5616 ,  G01R33/56509

Abstract: A magnetic resonance imaging apparatus includes a radio frequency (RF) controller configured to, during a repetition time (TR) period among TR periods, apply at least one RF pulse corresponding to a first slice to an object, and apply a navigator RF pulse corresponding to a second slice adjacent to the first slice to the object, a data obtainer configured to, during the TR period, obtain first k-space data corresponding to the applied at least one RF pulse, and obtain second k-space data corresponding to the applied navigator RF pulse, and an image processor configured to generate navigator images, based on pieces of second k-space data that are obtained during the TR periods, the pieces comprising the second k-space obtained during the TR period, correct the first k-space data, based on the navigator images, and generate a magnetic resonance image of the first slice, based on the corrected first k-space data.

公开(公告)号：US20200096591A1

公开(公告)日：2020-03-26

申请号：US16472069

申请日：2017-10-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joon-sung CHOI ,  Myung-sung SONG ,  Dae-ho LEE

IPC: G01R33/563 ,  G01R33/48 ,  G01R33/56 ,  A61B5/055

Abstract: Provided is a method of acquiring magnetic resonance (MR) image with respect to an object including a blood vessel by using a three-dimensional (3D) gradient echo sequence, the method including: acquiring k space data with respect to the object based on the 3D gradient echo sequence; and acquiring the MR image with respect to the object based on the acquired k space data, wherein the acquiring of the k space data includes acquiring the k space data based on the 3D gradient echo sequence having a TR (repetition time) that varies according to a value of at least one of a first axis or a second axis of the k space of the k space data.

公开(公告)号：US20180067183A1

公开(公告)日：2018-03-08

申请号：US15681018

申请日：2017-08-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joon-sung CHOI ,  Young-beom KIM

IPC: G01R33/561 ,  G01R33/48

CPC classification number: G01R33/5615 ,  G01R33/4818 ,  G01R33/561 ,  G01R33/5618 ,  G01R33/56518 ,  G01R33/56554

Abstract: A magnetic resonance imaging (MRI) apparatus for obtaining a magnetic resonance (MR) image using a multi-echo pulse sequence including a plurality of repetition times, including a memory configured to store an MR signal obtained using the multi-echo pulse sequence, and an image processor configured to determine a plurality of echo times included in the plurality of repetition times to provide the multi-echo pulse sequence including the plurality of echo times during the plurality of repetition times, and to obtain the MR image, based on the MR signal, wherein the plurality of repetition times includes a first repetition time adjacent to a second repetition time, wherein the plurality of echo times includes a first echo time of the first repetition time, a second echo time of the first repetition time, a first echo time of the second repetition time, and a second echo time of the second repetition time.

公开(公告)号：US20170082715A1

公开(公告)日：2017-03-23

申请号：US15227359

申请日：2016-08-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joon-sung CHOI ,  Dae-ho LEE ,  Sang-young ZHO

IPC: G01R33/563 ,  A61B5/02 ,  A61B5/026 ,  A61B5/055

CPC classification number: G01R33/5635 ,  A61B5/02007 ,  A61B5/026 ,  A61B5/0555 ,  G01R33/4835 ,  G01R33/4838 ,  G01R33/561 ,  G01R33/56308

Abstract: A method, which is performed by an MRI apparatus, of scanning a blood vessel, includes: sequentially applying, according to a time-of-flight (TOF) method, radio frequency (RF) pulses respectively to first grouped slabs during a first repetition time (TR); sequentially acquiring MR signals respectively corresponding to the RF pulses applied during the first TR; sequentially applying, according to the TOF method, RF pulses respectively to second grouped slabs during a second TR; and sequentially acquiring MR signals respectively corresponding to the RF pulses applied during the second TR.

公开(公告)号：US20150117739A1

公开(公告)日：2015-04-30

申请号：US14517071

申请日：2014-10-17

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun-wook PARK ,  Jae-moon JO ,  Joon-sung CHOI ,  Ye-ji HAN

IPC: G06T7/00 ,  G06T5/00

CPC classification number: G01R33/565 ,  G01R33/482 ,  G01R33/4824 ,  G01R33/4835 ,  G01R33/561 ,  G01R33/5635

Abstract: A method for generating an image by using a medical imaging apparatus includes acquiring first slab data which relates to a first imaging slab, acquiring second slab data which relates to a second imaging slab at a position which is different from a position of the first imaging slab, and generating a restored image by using data from among the acquired first slab data and data from among the acquired second slab data in slices which correspond to a same position on an object.

Abstract translation: 通过使用医学成像装置生成图像的方法包括获取与第一成像板相关的第一板数据，获取与第二成像板相关的第二板数据，该第二板数据与第一成像板的位置不同的位置 并且通过使用来自所获取的第一平板数据中的数据和所获取的第二平板数据中的与对象上的相同位置对应的切片中的数据来生成恢复的图像。

公开(公告)号：US20210173030A1

公开(公告)日：2021-06-10

申请号：US16770287

申请日：2018-08-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Joon-sung CHOI ,  Hyun-sang SUH ,  Hyun-seok SEO ,  Myung-sung SONG ,  Dae-ho LEE

IPC: G01R33/48 ,  G06T11/00 ,  G01R33/561 ,  A61B5/055 ,  A61B5/00

Abstract: Provided are a method of obtaining a water-fat separation image and a magnetic resonance imaging (MRI) apparatus including a controller configured to obtain first partial k-space data, second partial k-space data, and third partial k-space data, respectively based on a first partial echo signal, a second partial echo signal, and a third partial echo signal, which are magnetic resonance signals corresponding to a plurality of echo times with respect to an object, obtain first reconstruction image data, second reconstruction image data, and third reconstruction image data with respect to the object, respectively based on the first partial k-space data, the second partial k-space data, and the third partial k-space data, and obtain first water image data, first fat image data, and first phase image data of the object, respectively based on the first reconstruction image data, the second reconstruction image data, and the third reconstruction image data, by using a Dixon technique.

公开(公告)号：US20180321348A1

公开(公告)日：2018-11-08

申请号：US15774151

申请日：2016-08-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Myung-sung SONG ,  Joon-sung CHOI

IPC: G01R33/565 ,  A61B5/055 ,  A61B5/00 ,  G01R33/56 ,  G01R33/48

CPC classification number: G01R33/56509 ,  A61B5/00 ,  A61B5/0013 ,  A61B5/055 ,  A61B5/743 ,  A61B5/7475 ,  G01R33/4824 ,  G01R33/5608

Abstract: Provided are a magnetic resonance imaging (MRI) apparatus and a method of processing an MR image. The MRI apparatus includes an MR signal receiver receiving an MR signal emitted from the object, and a processor configured to obtain k-space blades from the MR signal according to a periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) method, to obtain centroid data of the k-space blades, and to determine whether to reconstruct an MR image of the object.

公开(公告)号：US20180217216A1

公开(公告)日：2018-08-02

申请号：US15886414

申请日：2018-02-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyun-sang SUH ,  Joon-sung CHOI

IPC: G01R33/56 ,  G01R33/48 ,  G01R33/54

CPC classification number: G01R33/5601 ,  A61B5/4869 ,  G01R33/4828 ,  G01R33/543

Abstract: A method and apparatus for acquiring a magnetic resonance (MR) signal are provided. The method includes: applying one radio frequency (RF) excitation pulse to a region of interest that has undergone a frequency shift by injecting a contrast agent into an object; acquiring a plurality of echo signals at a plurality of different echo times based on phase differences among water, fat, and the region of interest; and separating, based on the acquired plurality of echo signals, MR signals respectively originating from the water, the fat, and the region of interest.

公开(公告)号：US20140100441A1

公开(公告)日：2014-04-10

申请号：US13920666

申请日：2013-06-18

Applicant: Korea Advanced Institute of Science and Technology ,  Samsung Electronics Co., Ltd.

Inventor： Jae-moon JO ,  Hyun-wook PARK ,  Joon-sung CHOI

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

CPC classification number: G01R33/5608 ,  A61B5/055 ,  A61B5/7225 ,  A61B5/7253 ,  G01R33/4824 ,  G01R33/56545 ,  G06T11/006

Abstract: A medical diagnostic apparatus includes a data obtainer, which obtains an image frame included in a region to be imaged; and a data processor, which processes the obtained frame and obtains a medical image. The data obtainer includes a composite image generator, which generates a composite image by using the image frame; and a medical image obtainer, which compensates the composite image by using the image frame and boundary conditions corresponding to image signals included in the composite image and obtains the medical image by using the compensated composite image.

Abstract translation: 医疗诊断装置包括数据获取器，其获得包括在要成像的区域中的图像帧; 以及处理所获得的帧并获得医学图像的数据处理器。 数据获取器包括合成图像生成器，其通过使用图像帧生成合成图像; 以及医疗图像获取器，其通过使用与包括在合成图像中的图像信号相对应的图像帧和边界条件来补偿合成图像，并且通过使用补偿的合成图像获得医学图像。