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    FRESH BLOOD IMAGING (FBI) WITH INDEPENDENTLY CONTROLLED MRI DATA ACQUISITION PARAMETERS FOR DIASTOLIC AND SYSTOLIC MRI ACQUISITION SUB-SEQUENCES
    1.
    发明申请
    FRESH BLOOD IMAGING (FBI) WITH INDEPENDENTLY CONTROLLED MRI DATA ACQUISITION PARAMETERS FOR DIASTOLIC AND SYSTOLIC MRI ACQUISITION SUB-SEQUENCES 有权
    具有独立控制的新鲜血液成像（FBI）的MRI数据采集参数用于胶质和SYSTOLIC MRI获取子序列

    公开(公告)号：US20130234707A1

    公开(公告)日：2013-09-12

    申请号：US13415188

    申请日：2012-03-08

    申请人： Mitsue Miyazaki ,  Andrew J. Wheaton

    发明人： Mitsue Miyazaki ,  Andrew J. Wheaton

    IPC分类号： G01R33/48 ,  G01R33/44

    CPC分类号： A61B5/055 ,  A61B5/0263 ,  A61B5/0456 ,  G01R33/5617 ,  G01R33/5635 ,  G01R33/5673

    摘要： A magnetic resonance imaging (MRI) is configured to effect magnetic resonance angiography (MRA) data acquisition sequences including electrocardiogram (ECG) triggered fresh blood imaging (FBI) images respectively associated with systolic and diastolic phases of ECG cycles. An operator input and display interface may be configured to provide operator options for independently controlling at least one imaging sequence parameter to have a different value for each of systolic and diastolic phase images in an FBI MRI data acquisition sequence.

    摘要翻译： 磁共振成像（MRI）被配置为实现磁共振血管造影（MRA）数据采集序列，包括分别与ECG周期的收缩期和舒张期相关的心电图（ECG）触发的新鲜血液成像（FBI）图像。 操作者输入和显示界面可以被配置为提供操作者选项，用于独立地控制至少一个成像序列参数以对FBI MRI数据采集序列中的每个收缩期和舒张期相位图像具有不同的值。

    B1-robust and T1-robust species suppression in MRI
    3.
    发明授权
    B1-robust and T1-robust species suppression in MRI 有权
    在MRI中B1强壮和T1强壮的物种抑制

    公开(公告)号：US08723516B2

    公开(公告)日：2014-05-13

    申请号：US12713548

    申请日：2010-02-26

    申请人： Andrew J. Wheaton ,  James B. Murdoch

    发明人： Andrew J. Wheaton ,  James B. Murdoch

    IPC分类号： G01V3/00

    CPC分类号： G01R33/5607 ,  G01R33/5659

    摘要： An MRI multi-echo data acquisition sequence (REFUSAL=REFocusing Used to Selectively Attenuate Lipids) includes a spectrally-selective re-focusing RF pulse. The REFUSAL pulse can be non-spatially selective or spatially-selective. The REFUSAL pulse selectively refocuses water spins and avoids refocusing lipid spins. The REFUSAL pulse ideally maximizes refocusing for water and minimizes any lipid refocusing, with built-in robustness to B0-inhomogeneity and B1-inhomogeneity. Following the REFUSAL pulse, the remainder of the echo train continues in a conventional fashion. Only those spins that were refocused with the spectrally selective REFUSAL pulse continue to evolve coherently and generate a train of echoes. Those spins that were minimally refocused are spoiled and thus do not contribute signal to the final image. To incorporate a longer duration REFUSAL pulse, the echo spacing can be made non-uniform such that the first echo spacing is longer than the remainder of the echo spacings in the echo train.

    摘要翻译： MRI多回波数据采集序列（REFUSAL =用于选择性衰减脂质的重新聚焦）包括光谱选择性重聚焦RF脉冲。 REFUSAL脉冲可以是非空间选择性或空间选择性的。 REFUSAL脉冲选择性地重新聚焦水分，避免重新聚焦脂质旋转。 REFUSAL脉冲理想地最大限度地重新聚焦水，并最大限度地减少任何脂质重聚焦，具有内在的B0不均匀性和B1不均匀性的鲁棒性。 在REFUSAL脉冲之后，回波串的其余部分以常规方式继续。 只有那些重新聚焦于光谱选择性反射脉冲脉冲的旋转才能持续演变，产生一系列的回声。 那些最少重新聚焦的旋转被宠坏，因此不会对最终形象产生信号。 为了结合较长持续时间的REFUSAL脉冲，可以使回波间隔不均匀，使得第一回波间隔长于回波串中回波间隔的其余部分。

    Method of motion correction for dynamic volume alignment without timing restrictions
    4.
    发明授权
    Method of motion correction for dynamic volume alignment without timing restrictions 有权
    没有时间限制的动态音量对齐的运动校正方法

    公开(公告)号：US08126230B2

    公开(公告)日：2012-02-28

    申请号：US12296939

    申请日：2007-04-03

    申请人： Andrew J. Wheaton ,  Deepak V. Bhat ,  Michael R. Thompson ,  Wayne R. Dannels ,  Ad L. Moerland

    发明人： Andrew J. Wheaton ,  Deepak V. Bhat ,  Michael R. Thompson ,  Wayne R. Dannels ,  Ad L. Moerland

    IPC分类号： G06K9/00

    CPC分类号： G01R33/56509 ,  A61B5/055 ,  A61B5/7207 ,  A61B5/7292 ,  G01R33/5673 ,  G06F19/00 ,  G06T7/20 ,  G06T7/30 ,  G06T2207/30016

    摘要： When performing repetitive scans of a patient using a magnetic resonance imaging machine or the like, patients often tend to move as they relax during a lengthy scanning session, causing movement in the volume or portion of the patient being scanned. A prospective motion correction component accounts for patient movement by calculating transformation data representative of patient movement in multiple planes, as well as rotational movement, and a host evaluates the change in position relative to a most recent scanning geometry of the patient or dynamic volume. In this manner, correction or adjustment to the scanning geometry employed by an associated scanner is made only for the differential between the current geometry and the most recent geometry, to mitigate redundant adjustment that can result in oscillatory over—and under—compensation during adjustments.

    摘要翻译： 当使用磁共振成像机等进行患者的重复扫描时，患者经常倾向于在长时间的扫描会话期间放松时移动，导致被扫描的患者的体积或部分的运动。 预期运动校正组件通过计算表示多平面中的患者运动的转化数据以及旋转运动来计算患者运动，并且主机评估相对于患者或动态体积的最近扫描几何形状的位置变化。 以这种方式，由相关联的扫描仪使用的扫描几何形状的校正或调整仅用于当前几何形状和最近几何形状之间的差异，以减轻在调整期间可能导致振荡过度和欠补偿的冗余调整。

    MRI using prep scan sequence producing phase-offset NMR signals from different NMR species
    5.
    发明授权
    MRI using prep scan sequence producing phase-offset NMR signals from different NMR species 有权
    MRI使用准备扫描序列产生不同NMR物质的相位偏移NMR信号

    公开(公告)号：US08248070B1

    公开(公告)日：2012-08-21

    申请号：US13064376

    申请日：2011-03-22

    申请人： Andrew J. Wheaton

    发明人： Andrew J. Wheaton

    IPC分类号： G01V3/00

    CPC分类号： G01R33/4828 ,  G01R33/5617

    摘要： A magnetic resonance imaging (MRI) process generates images of patient tissue including use of at least one programmed controller in an MRI system to effect a preparatory nuclear magnetic resonance (NMR) sequence including a binomial radio frequency (RF) pulse having at least two independently phased RF flip angle components that are spaced in the time domain by τ to provide a respectively corresponding evolved phase difference Δθ between predetermined NMR species having different NMR frequencies, followed by a main MRI data acquisition sequence, and generation and display of an image of patient tissue based at least in part on MRI data acquired during the acquisition sequence.

    摘要翻译： 磁共振成像（MRI）过程产生患者组织的图像，包括在MRI系统中使用至少一个编程的控制器来实现包括具有至少两个独立的二项式射频（RF）脉冲的准备性核磁共振（NMR）序列 相位RF翻转角分量在时域上与τ间隔，以提供分别对应的演化相位差＆Dgr; 在具有不同NMR频率的预定NMR物质之间，随后是主要的MRI数据采集序列，以及至少部分地基于在采集序列期间获取的MRI数据来生成和显示患者组织的图像。

    Method of Motion Correction for Dynamic Volume Alignment Without Timing Restrictions
    6.
    发明申请
    Method of Motion Correction for Dynamic Volume Alignment Without Timing Restrictions 有权
    不带时序限制的动态体积校准的运动校正方法

    公开(公告)号：US20090116761A1

    公开(公告)日：2009-05-07

    申请号：US12296939

    申请日：2007-04-03

    申请人： Andrew J. Wheaton ,  Deepak V. Bhat ,  Michael R. Thompson ,  Wayne R. Dannels ,  Ad L. Moerland

    发明人： Andrew J. Wheaton ,  Deepak V. Bhat ,  Michael R. Thompson ,  Wayne R. Dannels ,  Ad L. Moerland

    IPC分类号： G06K9/40

    CPC分类号： G01R33/56509 ,  A61B5/055 ,  A61B5/7207 ,  A61B5/7292 ,  G01R33/5673 ,  G06F19/00 ,  G06T7/20 ,  G06T7/30 ,  G06T2207/30016

    摘要： When performing repetitive scans of a patient using a magnetic resonance imaging machine or the like, patients often tend to move as they relax during a lengthy scanning session, causing movement in the volume or portion of the patient being scanned. A prospective motion correction component (64) accounts for patient movement by calculating transformation data representative of patient movement in multiple planes, as well as rotational movement, and a host (38, 122) evaluates the change in position relative to a most recent scanning geometry of the patient or dynamic volume. In this manner, correction or adjustment to the scanning geometry employed by an associated scanner (10) is made only for the differential between the current geometry and the most recent geometry, to mitigate redundant adjustment that can result in oscillatory over- and under-compensation during adjustments.

    摘要翻译： 当使用磁共振成像机等进行患者的重复扫描时，患者经常倾向于在长时间的扫描会话期间放松时移动，导致被扫描的患者的体积或部分的运动。 预期运动校正组件（64）通过计算表示多平面中的患者运动以及旋转运动的变换数据来计算患者运动，并且主机（38,122）评估相对于最近的扫描几何形状的位置变化 的患者或动态体积。 以这种方式，由相关联的扫描器（10）采用的扫描几何形状的校正或调整仅用于当前几何形状和最近几何形状之间的差异，以减轻可能导致振荡过度和欠补偿的冗余调整 在调整期间。