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    • 1. 发明授权
    • MR 데이터를 획득하고 B1 자기장을 판단하는 방법 및 이에 대응하여 설계된 자기 공명 시스템
    • 1获取磁盘数据并确定B1磁场的方法,作为相应设计的磁共振系统
    • KR101617937B1
    • 2016-05-18
    • KR1020140010572
    • 2014-01-28
    • 지멘스 악티엔게젤샤프트
    • 쾰러,마이클스페크너,토르스텐
    • G01R33/483G01R33/34
    • G01R33/54G01R33/246
    • MR 데이터를획득하고, B1 자기장을판단하기위한방법및 이에대응하여설계된자기공명시스템. 본발명은자기공명시스템(5)을이용하여볼륨세그먼트내에서 MR 데이터를획득하기위한방법에관한것이다. MR 데이터는제1 공명 RF 펄스(31)를방출하는단계, 제2 공명 RF 펄스(32)를방출하는단계, 제1 공명 RF 펄스(31) 후에그리고제2 공명 RF 펄스(32) 전에적용된탈위상제1 그레이디언트(41)를적용하는단계, 제2 공명 RF 펄스(32) 후에제3 공명 RF 펄스(33)를방출하는단계, 제1 그레이디언트(41)에의해준비된자화성분의자극에코(SE)를리포커싱하기위해제3 RF 펄스(33) 후에제2 그레이디언트(42)를적용하는단계, MR 데이터를판독하는단계, 및 MR 데이터의판독후에제4 공명 RF 펄스(34)를방출하여종방향자화를감소시키는단계를포함하는시퀀스(61; 62)를이용하여반복적으로획득된다.
    • 在用于获取体积段内的MR数据的方法和磁共振(MR)系统中,以包括以下步骤的序列重复获取MR数据。 辐射第一谐振RF脉冲并辐射第二谐振RF脉冲。 在第一谐振RF脉冲之后和第二谐振RF脉冲之前施加去相位第一梯度。 在第二谐振RF脉冲之后辐射第三谐振RF脉冲。 在第三RF脉冲之后施加第二梯度,以便重新聚焦由第一梯度制备的磁化成分的受激回波。 读取MR数据,在MR数据的读出之后辐射第四谐振RF脉冲,以减小纵向磁化强度。
    • 2. 发明公开
    • 자기 공명 기법에서 측정 볼륨 내의 검사 대상의 대상-특정 B1 분포를 결정하는 방법, 자기 공명 시스템, 및 컴퓨터 판독가능한 기록 매체
    • 用于确定磁共振技术,磁共振系统,计算机程序和电子可读数据介质中的测量体系中检查对象的主要特定B1分布的方法
    • KR1020130135776A
    • 2013-12-11
    • KR1020130062491
    • 2013-05-31
    • 지멘스 악티엔게젤샤프트
    • 쾰러,마이클스페크너,토르스텐
    • G01R33/38G01R33/20A61B5/055
    • G01R33/32G01R33/246G01R33/44G01R33/20A61B5/055G01R33/38
    • The present invention relates to a method for determining a subject-specific B1 distribution of an examination subject in a measurement volume in a magnetic resonance technique, a magnetic resonance system, a computer program, and an electronically readable data medium comprising: a step of measuring a first measurement data set of a subject using a first pulse sequence; a step of measuring a second measurement data set of the subject using a second pulse sequence; a step of measuring a third measurement data set of the subject using a third pulse sequence; a step of determining a first phase from the first measurement data set, of determining a second phase from the second measurement data set, and of determining a third phase from the third measurement data set; a step of calculating a phase shift related to the first, the second, and the third phase; and a step of determining the B1 distribution from the phase shift. An effect on resonance shifts for determining the B1 distribution can be avoided by measuring the first, the second, and the third phase. Therefore, the magnetic resonance system, the computer program, and the electronically readable medium are demanded.
    • 本发明涉及一种用于确定磁共振技术,磁共振系统,计算机程序和电子可读数据介质中的测量体积中的检查对象的受试者特异性B1分布的方法,包括:测量步骤 使用第一脉冲序列的对象的第一测量数据集; 使用第二脉冲序列测量对象的第二测量数据集的步骤; 使用第三脉冲序列测量对象的第三测量数据集的步骤; 从所述第一测量数据集确定第一相位,从所述第二测量数据集确定第二相位,以及从所述第三测量数据集确定第三相位的步骤; 计算与第一相,第二相和第三相相关的相移的步骤; 以及从相移确定B1分布的步骤。 通过测量第一相,第二相和第三相可以避免对用于确定B1分布的谐振偏移的影响。 因此,需要磁共振系统,计算机程序和电子可读介质。
    • 4. 发明公开
    • MR 데이터를 획득하고 B1 자기장을 판정하는 방법 및 이에 대응하여 설계된 자기 공명 시스템
    • 获取磁盘数据和确定B1磁场的方法,以及相应的设计磁共振系统
    • KR1020140099201A
    • 2014-08-11
    • KR1020140010514
    • 2014-01-28
    • 지멘스 악티엔게젤샤프트
    • 쾰러,마이클스페크너,토르스텐
    • G01R33/483
    • G01R33/443A61B5/055G01R33/246G01R33/54G01R33/48G01R33/44G01R33/483
    • Provided are a method of acquiring MR data and determine a B1 magnetic field and a magnetic resonance system designed to correspond to the same. The present invention relates to a method of acquiring MR data in a volume segment by using a magnetic resonance system (5). The MR data is repeatedly acquired by using a sequence (61, 42) which includes the steps of: radiating a first resonant RF pulse (31); radiating a second resonant RF pulse (32); applying a dephasing first gradient (41) after radiating the first resonant RF pulse (31) and before radiating the second resonant RF pulse (32); radiating a third resonant RF pulse (33) after radiating the second resonant RF pulse (32); applying a second gradient (42) after radiating the third RF resonant pulse (33), in order to refocus a stimulated echo (SE) of a magnetization component prepared by the dephasing first gradient (41); and reading out MR data associated with the stimulated echo. The first gradient moment (41) and/or the second gradient moment (42) of an input defined in the sequence (61) are/is different from the first gradient moment (41) and/or the second gradient moment (42) in an additional input of a successive sequence (62).
    • 提供了一种获取MR数据并确定B1磁场和被设计为对应于其的磁共振系统的方法。 本发明涉及一种通过使用磁共振系统(5)在体段中获取MR数据的方法。 通过使用包括以下步骤的序列(61,42)重复获取MR数据:辐射第一谐振RF脉冲(31); 辐射第二谐振RF脉冲(32); 在辐射第一谐振RF脉冲(31)之后并且在辐射第二谐振RF脉冲(32)之前施加去相位第一梯度(41); 在辐射第二谐振RF脉冲(32)之后辐射第三谐振RF脉冲(33); 在辐射第三RF谐振脉冲(33)之后施加第二梯度(42),以便重新聚焦由去相位第一梯度(41)制备的磁化分量的受激回波(SE)。 并读出与受激回波相关的MR数据。 在序列(61)中定义的输入的第一梯度矩(41)和/或第二梯度时刻(42)与第一梯度时刻(41)和/或第二梯度时刻(42)不同 连续序列(62)的附加输入。
    • 6. 发明公开
    • MR 데이터를 획득하고 B1 자기장을 판단하는 방법 및 이에 대응하여 설계된 자기 공명 시스템
    • 获取磁盘数据和确定B1磁场的方法,以及相应的设计磁共振系统
    • KR1020140099202A
    • 2014-08-11
    • KR1020140010572
    • 2014-01-28
    • 지멘스 악티엔게젤샤프트
    • 쾰러,마이클스페크너,토르스텐
    • G01R33/483G01R33/34
    • G01R33/54G01R33/246G01R33/483G01R33/34G01R33/44
    • Provided are a method of acquiring MR data, a method of determining a B1 magnetic field and a magnetic resonance system designed to correspond to the same. The present invention relates to a method of acquiring MR data in a volume segment by using a magnetic resonance system (5). The MR data is repeatedly acquired by using a sequence (61, 62) which includes the steps of: radiating a first resonant RF pulse (31); radiating a second resonant RF pulse (32); apply a dephasing first gradient (41) after radiating the first resonant RF pulse (31) and before radiating the second resonant RF pulse (32); radiating a third resonant RF pulse (33) after radiating the second resonant RF pulse (32); applying a second gradient (42) after radiating the third RF resonant pulse (33), in order to refocus a stimulated echo (SE) of a magnetization component prepared by the dephasing first gradient (41); reading out MR data associated with the stimulated echo; and radiating a fourth resonant RF pulse (34) after reading out the MR data to reduce longitudinal magnetization.
    • 提供一种获取MR数据的方法,确定B1磁场的方法和被设计为对应于其的磁共振系统。 本发明涉及一种通过使用磁共振系统(5)在体段中获取MR数据的方法。 通过使用包括以下步骤的序列(61,62)重复获取MR数据:辐射第一谐振RF脉冲(31); 辐射第二谐振RF脉冲(32); 在辐射第一谐振RF脉冲(31)之后并且在辐射第二谐振RF脉冲(32)之前施加去相位第一梯度(41); 在辐射第二谐振RF脉冲(32)之后辐射第三谐振RF脉冲(33); 在辐射第三RF谐振脉冲(33)之后施加第二梯度(42),以便重新聚焦由去相位第一梯度(41)制备的磁化分量的受激回波(SE)。 读出与受激回波相关的MR数据; 以及在读出MR数据之后辐射第四谐振RF脉冲(34)以减小纵向磁化强度。