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    MAGNETIC RESONANCE IMAGING WITH DYNAMIC INVERSION PREPARATION
    1.
    发明申请
    MAGNETIC RESONANCE IMAGING WITH DYNAMIC INVERSION PREPARATION 审中-公开
    具有动态反演准备的磁共振成像

    公开(公告)号：US20150094562A1

    公开(公告)日：2015-04-02

    申请号：US14043220

    申请日：2013-10-01

    Applicant: General Electric Company

    Inventor： Christopher Judson Hardy ,  Glenn Scott Slavin ,  Jeffrey Alan Stainsby ,  Martin Andreas Janich

    IPC: G01R33/567 ,  A61B5/055 ,  G01R33/48

    CPC classification number: G01R33/5673 ,  A61B5/0205 ,  A61B5/0402 ,  A61B5/055 ,  A61B5/7285 ,  G01R33/5602 ,  G01R33/5607

    Abstract: A magnetic field may be applied to a subject having a plurality of tissues, including first and second tissues, causing a net longitudinal magnetization in the tissues. An inversion radio frequency pulse may be generated to invert the longitudinal magnetization from the tissues. Heart-rate timing information associated with a current ECG of the subject may be measured, and an inversion time TI may be dynamically calculated based at least in part on the heart-rate timing information. An excitation radio frequency pulse may then be generated. The generation of the excitation radio frequency pulse may occur a period of time after the generation of the inversion radio frequency pulse, and the period of time may be based on the dynamically calculated inversion time TI. Magnetic resonance imaging data may then be acquired.

    Abstract translation: 可以向具有多个组织的对象施加磁场，包括第一和第二组织，从而在组织中产生净纵向磁化强度。 可以产生反转射频脉冲以反转来自组织的纵向磁化强度。 可以测量与对象的当前ECG相关联的心率定时信息，并且可以至少部分地基于心率定时信息动态地计算反转时间TI。 然后可以产生激发射频脉冲。 激发射频脉冲的产生可以在产生反向射频脉冲之后的一段时间内发生，并且该时间段可以基于动态计算的反转时间TI。 然后可以获取磁共振成像数据。

    TIME OPTIMAL PHASE SENSITIVE INVERSION RECOVERY RECONSTRUCTION FOR MAGNETIC RESONANCE IMAGING
    3.
    发明申请
    TIME OPTIMAL PHASE SENSITIVE INVERSION RECOVERY RECONSTRUCTION FOR MAGNETIC RESONANCE IMAGING 有权
    时间优化相位敏感反演恢复磁共振成像重建

    公开(公告)号：US20170030990A1

    公开(公告)日：2017-02-02

    申请号：US14814671

    申请日：2015-07-31

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Martin Andreas Janich ,  Thomas Kwok-Fah Foo ,  Anja Christina Sophie Brau

    IPC: G01R33/567 ,  G06T11/00 ,  G01R33/561 ,  A61B5/055 ,  A61B5/00 ,  G06T7/00 ,  G06K9/46

    CPC classification number: A61B5/7285 ,  A61B5/055 ,  G01R33/5601 ,  G01R33/5602 ,  G01R33/5611 ,  G01R33/56563

    Abstract: A system and method for cardiac magnetic resonance imaging (MRI) is disclosed that facilitates the phase sensitive reconstruction of inversion recovery magnetization prepared data with minimal scan time penalty by acquiring the phase reference data with low spatial resolution. The technique can be applied for the investigation of myocardial tissue characterization by acquiring 2D and/or 3D late Gadolinium enhancement (LGE) scans after the injection of a Gadolinium contrast agent. Regional areas of contrast accumulation in scarred myocardial tissue appear bright on these T1-weighted images. As disclosed here the proposed technique for phase sensitive inversion recovery acquisition with low resolution phase reference is robust against changes in inversion time, change in T1 due to Gadolinium contrast washout, high signal-to-noise ratio, and low scan time penalty compared to magnitude LGE.

    Abstract translation: 公开了用于心脏磁共振成像（MRI）的系统和方法，其通过以低空间分辨率获取相位参考数据来促进具有最小扫描时间损失的反转恢复磁化准备数据的相敏感重建。 该技术可以应用于通过在注射钆造影剂之后获取2D和/或3D晚期钆增强（LGE）扫描来研究心肌组织表征。 瘢痕性心肌组织对比积累的区域区域在这些T1加权图像上呈现明亮。 如本文所揭示的，具有低分辨率相位参考的相位敏感反演恢复采集的所提出的技术对于反转时间的变化是鲁棒的，由于钆对比度冲洗，高信噪比和低扫描时间损失，T1的变化与幅度 LGE。

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