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    • 2. 发明授权
    • 자기 공명 영상 시스템 제어 방법 및 장치
    • KR101865247B1
    • 2018-06-08
    • KR1020150018604
    • 2015-02-06
    • 지멘스 악티엔게젤샤프트
    • 스페이어,피터
    • G01R33/54A61B5/055
    • G01R33/56518G01R33/34092G01R33/443G01R33/4835G01R33/543G01R33/546G01R33/5611G01R33/5612G01R33/5614
    • 본발명은자기공명원 데이터(RD)가검출되며, 검사대상(O)의자기공명영상데이터(BD)의생성을위한자기공명영상시스템의제어방법에관한것이다. 상기방법은각각하나의여기과정을갖는복수의펄스시퀀스세그먼트(140, 140*, 150, 150*, 160, 160*)를포함한다. 여기과정에서, 제1 절편선택기울기펄스(GS1)가절편선택방향(SSR)으로생성된다. 또한, 동시에여기되는 N 절편의여기에대해상응하는 N 여기주파수를포함하는여기-HF-펄스(RF1)가생성된다. 상기방법은후속되는상기판독과정을포함한다. 판독과정에서, 재위상기울기펄스가절편선택방향(SSR)으로생성된다. 또한, 자기공명원 데이터(RD)의획득을위한 HF 신호가수신된다. 이전의펄스시퀀스세그먼트(140, 150, 160)의 HF 신호의수신후에그리고후속되는펄스시퀀스세그먼트(140, 150, 160)의여기-HF-펄스(RF1)의생성이전에, 전위상기울기펄스가절편선택방향(SSR)으로생성되며, 상기전위상기울기펄스는, 절편선택방향(SSR)으로의모든기울기펄스에대한기울기모멘트가여기-HF-펄스(RF1)의중간으로부터후속되는여기-HF-펄스(RF2)의중간까지적분되어 0의값을포함하도록할당된다. 상이한재위상기울기펄스를갖는각각동시에여기된 N 절편에대한펄스시퀀스세그먼트(140, 150, 160)가반복되고, 각각동시에여기된절편에대해, 유사한재위상기울기펄스를갖는, 그러나상이한위상을갖는여기-HF-펄스(RF1, RF2)를갖는한 쌍의펄스시퀀스세그먼트(140, 140*; 150, 150*; 160, 160*)가생성된다. 또한, 본발명은자기공명영상시스템의제어를위한제어시퀀스, 및자기공명영상시스템(1)을위한상기제어시퀀스(AS)를결정하기위해구성된제어시퀀스결정시스템(22)에관한것이다. 또한, 본발명은본 발명에따른방법을이용하여자기공명영상시스템(1)의제어를위해구성된제어장치(10)를포함하는자기공명영상시스템(1)에관한것이다. 마지막으로, 본발명은상기방법을구현하기위한컴퓨터프로그램제품에관한것이다.
    • 4. 发明公开
    • 자기공명영상장치 및 그 제어방법
    • 磁共振成像装置及其控制方法
    • KR1020140100600A
    • 2014-08-18
    • KR1020130012852
    • 2013-02-05
    • 삼성전자주식회사
    • 이대호최승제김준수
    • A61B5/055
    • G01R33/56518
    • One embodiment of the present invention provides a magnetic resonance imaging device which improves the accuracy of correction by considering the shape of actually applied tilt waveform and a control method thereof. A magnetic resonance imaging device according to one embodiment of the present invention includes: a magnetic assembly which includes a static magnetic field coil part and a tilt magnetic field coil part and forms a static magnetic field and a tilt magnetic field in the inner space; and a tilt applying part which applies a test tilt waveform to the magnetic assembly and corrects the distortion of the tilt magnetic field, which can be caused by an eddy current, by considering the shape of the test tilt waveform.
    • 本发明的一个实施例提供一种通过考虑实际施加的倾斜波形的形状及其控制方法来提高校正精度的磁共振成像装置。 根据本发明的一个实施例的磁共振成像装置包括:磁性组件,其包括静态磁场线圈部分和倾斜磁场线圈部分,并在内部空间中形成静磁场和倾斜磁场; 以及倾斜施加部件,其通过考虑测试倾斜波形的形状,向磁性组件施加测试倾斜波形并校正可能由涡流引起的倾斜磁场的失真。
    • 5. 发明公开
    • 고온, 고자장 및 고진공하에서 고주파 자장섭동 측정을위한 자장 탐침
    • 用于测量高温,超真空和高磁场环境下的高频磁场波动的磁性探针
    • KR1020080069349A
    • 2008-07-28
    • KR1020070006955
    • 2007-01-23
    • 한국기초과학지원연구원
    • 박준교이상곤
    • G01Q60/54
    • G01Q60/56G01R33/045G01R33/56518G21B1/057
    • A magnetic probe for measuring a high frequency magnetic fluctuation under high temperature, ultra-vacuum and high magnetic field environments is provided to reduce a ratio of an electromagnetic wave noise signal under a high electromagnetic environment. A magnetic probe for measuring a high frequency magnetic fluctuation under high temperature, ultra-vacuum and high magnetic field environments includes a ceramic bobbin(1) and a conductive wire(2). The conductive wire is wound around on the ceramic bobbin. Two spiral grooves with different depths are formed on a surface of the ceramic bobbin. The spiral grooves are formed at positions opposite to each other on a central axis of the ceramic bobbin and are connected with each other at an upper part of the ceramic bobbin. The conductive wire is continuously wound around the ceramic bobbin along the two spiral grooves. Both ends of the conductive wire are placed at a lower part of the bobbin. The conductive wire is a bare wire.
    • 提供用于测量在高温,超真空和高磁场环境下的高频磁波动的磁探针,以减少在高电磁环境下的电磁波噪声信号的比率。 用于测量在高温,超真空和高磁场环境下的高频磁波动的磁探头包括陶瓷线轴(1)和导线(2)。 导线绕在陶瓷线轴上。 在陶瓷线轴的表面上形成有两个具有不同深度的螺旋槽。 螺旋槽形成在陶瓷线轴的中心轴线上彼此相对的位置,并在陶瓷线轴的上部彼此连接。 导线沿着两个螺旋槽连续缠绕在陶瓷线轴上。 导线的两端放置在线轴的下部。 导线是裸线。
    • 7. 发明公开
    • MR 영상 내의 아티팩트를 감소시키는 방법 및 MRI 시스템
    • 用于补偿残留磁化的MRI系统的方法
    • KR1020000047676A
    • 2000-07-25
    • KR1019990051445
    • 1999-11-19
    • 제너럴 일렉트릭 캄파니
    • 마징페이쥬지아홍맥키논그래메콜린
    • A61B5/055
    • G01R33/56518
    • PURPOSE: A method for compensating an MRI system for residual magnetization is provided to maintain a residual magnetization in the MRI system at a constant level which reduces image artifacts by employing a system which adds magnetization reset gradient waveforms with image gradient waveforms, when an image is scanned. CONSTITUTION: An operation of A system is controlled from an operator console(100) which includes a keyboard and control panel(102) and a display(104). The console(100) communicates through a link(116) with a separate computer system(107) that enables an operator to control the production and display of images on the screen(104). The system control(122) includes a set of modules connected together by a backplane(118). These include a CPU module(119) and a pulse generator module(121) which connects to the operator console(100) through a serial link(125). It is through this link(125) that the system control(122) receives commands from the operator which indicate the scan sequence that is to be performed. The pulse generator module(121) operates the system components to carry out the desired scan sequence. It produces data which indicates the timing, strength and shape of the RF pulses which are to be produced, and the timing of and length of the data acquisition window. The pulse generator module(121) connects through a gradient compensation system(129) to a set of gradient amplifiers(127), to indicate the timing and shape of the gradient pulses to be produced during the scan. The pulse generator module(121) also connects to a scan room interface circuit(133) which receives signals from various sensors associated with the condition of the patient and the magnet system. It is also through the scan room interface circuit(133) that a patient positioning system(134) receives commands to move the patient to the desired position for the scan.The gradient waveforms produced by the pulse generator module (121) are compensated by the system(129) and applied to a gradient amplifier system (127) comprised of Gx, Gy and Gz amplifiers.
    • 目的:提供用于补偿MRI系统的剩余磁化的方法,以将MRI系统中的剩余磁化强度保持在恒定水平,通过采用将图像梯度波形与图像梯度波形相加的系统来减少图像伪影,当图像为 扫描。 构成:从包括键盘和控制面板(102)和显示器(104)的操作员控制台(100)控制A系统的操作。 控制台(100)通过链接(116)与单独的计算机系统(107)进行通信,该计算机系统使得操作者能够控制屏幕(104)上的图像的制作和显示。 系统控制(122)包括通过背板(118)连接在一起的一组模块。 这些包括通过串行链路(125)连接到操作员控制台(100)的CPU模块(119)和脉冲发生器模块(121)。 通过该链接(125)系统控制(122)从操作者接收指示要执行的扫描序列的命令。 脉冲发生器模块(121)操作系统组件以执行所需的扫描序列。 它产生指示要产生的RF脉冲的定时,强度和形状以及数据采集窗口的定时和长度的数据。 脉冲发生器模块(121)通过梯度补偿系统(129)连接到一组梯度放大器(127),以指示在扫描期间产生的梯度脉冲的定时和形状。 脉冲发生器模块(121)还连接到扫描室接口电路(133),其接收与患者和磁体系统的状况相关联的各种传感器的信号。 还通过扫描室接口电路(133),患者定位系统(134)接收命令以将患者移动到用于扫描的期望位置。由脉冲发生器模块(121)产生的梯度波形由 系统(129)并应用于由Gx,Gy和Gz放大器组成的梯度放大器系统(127)。
    • 10. 发明公开
    • 자기 공명 데이터 세트를 기록하기 위한 방법 및 자기 공명 장치
    • 用于记录磁共振数据集和磁共振装置的方法
    • KR1020150117616A
    • 2015-10-20
    • KR1020150050268
    • 2015-04-09
    • 지멘스 악티엔게젤샤프트
    • 그로드즈키,데이비드
    • G01R33/565G01R33/56G01R33/54G01R33/48A61B5/055
    • G01R33/543A61B5/055G01R33/4818G01R33/56518
    • 본발명은, 자기공명장치를사용하여객체(19)의타깃영역의자기공명데이터세트(16)를기록하기위한방법에관한것으로, 여기서타깃영역은, 기본자기장의균일성에영향을미치는나머지타깃영역과의감응성차이를갖는적어도하나의간섭체(20), 특히금속체및/또는기공을포함하며, 부가적인탈위상없이기록된타깃영역의제1 미가공데이터세트(18)에추가로, 상기타깃영역에서의스핀의미가공데이터고유의부가적인탈위상에대응하는타깃영역의적어도하나의추가미가공데이터세트가기록되며, 자기공명데이터세트(16)의각각의상점에대해, 위치공간에서의모든미가공데이터세트의대응하는상점들의최대값미가공데이터가자기공명데이터로서선택된다.
    • 本发明涉及使用磁共振装置记录物体(19)的目标区域的磁共振数据集(16)的方法。 目标区域包括至少一个干涉体(20),特别是具有与影响基极磁场的均匀性的剩余目标区域不同的灵敏度的金属体和/或气孔。 除了记录的目标区域的第一未处理数据集(18)之外,还记录了对应于目标区域中未处理的自旋数据的唯一附加去相位的目标区域的至少一个附加的未处理数据集,而无需额外的去相位。 对于磁共振数据集(16)的每个图像点,选择与空间空间中的所有未处理的数据集相对应的图像点的最大未处理数据作为磁共振数据。