利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

229 条记录 (耗时 0.023 秒)

    MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD OF CONTROLLING THE SAME
    2.
    发明公开
    MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD OF CONTROLLING THE SAME 审中-公开
    磁共振成像装置及其控制方法

    公开(公告)号：EP3193185A2

    公开(公告)日：2017-07-19

    申请号：EP16202449.1

    申请日：2016-12-06

    申请人： Samsung Electronics Co., Ltd.

    发明人： Zho, Sang Young ,  Park, Jong Buhm ,  Jung, Sung Pil

    IPC分类号： G01R33/483 ,  G01R33/56

    CPC分类号： G01R33/4838 ,  G01R33/4833 ,  G01R33/56 ,  G01R33/5608

    摘要： It is an aspect of the present disclosure to provide an MRI apparatus configured to and a method to acquire a sectional image of an object and implement a reduced Field of View (FOV) from which aliasing is removed by using a saturation pulse sequence that suppresses a magnetic resonance (MR) signal at a given position, and a method of controlling the same. An MRI apparatus may include: a sequence controller controlling a scanner to apply an unsaturation pulse sequence and a saturation pulse sequence to the object; and a data processor configured to acquire a first image by receiving an MR signal from the object to which the unsaturation pulse sequence is applied, acquire a second image by receiving an MR signal from the object to which the saturation pulse sequence is applied, and generate a difference image between the first image and the second image.

    摘要翻译： 本公开的一个方面在于提供一种MRI设备，其被配置为获取对象的截面图像并且通过使用抑制a值的饱和脉冲序列来实现从中消除了混叠的缩小的视场（FOV） 在给定位置处的磁共振（MR）信号及其控制方法。 MRI装置可以包括：顺序控制器，控制扫描仪向对象施加不饱和脉冲序列和饱和脉冲序列; 以及数据处理器，被配置为通过从施加有不饱和脉冲序列的对象接收MR信号来获取第一图像，通过从施加了饱和脉冲序列的对象接收MR信号来获取第二图像，并且生成 第一图像和第二图像之间的差异图像。

    MAGNETIZATION TRANSFER CONTRAST TECHNIQUE FOR CHEMICAL EXCHANGE SATURATION TRANSFER (CEST) MRI BY LOCALIZED STEAM AND METHOD OF OPERATION THEREOF
    3.
    发明公开
    MAGNETIZATION TRANSFER CONTRAST TECHNIQUE FOR CHEMICAL EXCHANGE SATURATION TRANSFER (CEST) MRI BY LOCALIZED STEAM AND METHOD OF OPERATION THEREOF 审中-公开
    磁化传递对比技术处理化工交换饱和转移（EDT）-MRI局地蒸汽和及其操作方法

    公开(公告)号：EP3047294A1

    公开(公告)日：2016-07-27

    申请号：EP14786297.3

    申请日：2014-08-28

    申请人： Koninklijke Philips N.V.

    发明人： YANG, Baolian

    IPC分类号： G01R33/56

    CPC分类号： G01R33/5605 ,  G01R33/288 ,  G01R33/4833 ,  G01R33/5617

    摘要： A magnetic resonance imaging (MRI) system (600),for acquiring magnetic resonance (MR) information of a volume, includes at least one controller (610) configured generate at least a portion of a stimulated echo acquisition mode (STEAM) CESTsequence including first through third 90º radio frequency (RF) pulses, and a first pulse train situated before the first 90º RF pulse. The first pulse train has first number of pulses. The controller (610) is further configured to generate at least another portion of the STEAM CEST sequence comprising a second pulse train situated between the second and third 90º RF pulses, the second pulse train comprising a second number of pulses which is less than the first number of pulses;generating end of spoil gradients;and/or to acquire MR information during an acquisition window which is stated at least partially after the end of spoil gradients.

    METABOLITE DETECTION SYSTEM AND OPERATION THEREOF
    5.
    发明公开
    METABOLITE DETECTION SYSTEM AND OPERATION THEREOF 审中-公开
    系统如何检测代谢物和其操作

    公开(公告)号：EP2898337A2

    公开(公告)日：2015-07-29

    申请号：EP13799368.9

    申请日：2013-09-09

    申请人： Koninklijke Philips N.V.

    发明人： YANG, Baolian

    IPC分类号： G01R33/485 ,  G01R33/46 ,  A61B5/055 ,  G01R33/483

    CPC分类号： G01R33/465 ,  A61B5/055 ,  A61B5/0555 ,  A61B5/4058 ,  G01R33/4616 ,  G01R33/4833 ,  G01R33/485

    摘要： A magnetic resonance (MR) system for detecting concentrations one or more metabolites in a volume of interest (VOI), the system including at least one controller which: may apply to the VOI a multiple quantum filter (MQF) Point Resolved Spetroscopy (PRESS) sequence comprising first and second 90º RF pulses, a third 90º RF pulse,first and second 180º adiabatic pulses, and a composite dual-band delay alternating with nutation for tailored excitation (DANTE) pulse train having a plurality of N block pulses (N being an integer), the DANTE pulse train situated in time between the first and second 90º RF pulses, the first and second 180º adiabatic pulses situated in time after third 90º RF pulse; detect MR Free Induced Decay (FID)signal emitted from the VOI; and/or reconstruct the detected MR FID signal to obtain metabolite spectrum information.

    MAGNETIC RESONANCE IMAGING DEVICE AND METHOD FOR ADJUSTING EXCITATION REGION
    8.
    发明公开
    MAGNETIC RESONANCE IMAGING DEVICE AND METHOD FOR ADJUSTING EXCITATION REGION 审中-公开
    MAGNETRESONANZBILDGEBUNGSVORRICHTUNG UND VERFAHREN ZUR EINSTELLUNG EINES ERREGUNGSBEREICHS

    公开(公告)号：EP2484280A1

    公开(公告)日：2012-08-08

    申请号：EP10820408.2

    申请日：2010-09-22

    申请人： Hitachi Medical Corporation

    发明人： GOTO,Tomohiro ,  NISHIHARA,Takashi ,  ITAGAKI,Hiroyuki

    IPC分类号： A61B5/055 ,  G01R33/48

    CPC分类号： G01R33/4836 ,  A61B5/055 ,  G01R33/4833 ,  G01R33/4838 ,  G01R33/543 ,  G01R33/546 ,  G01R33/5676

    摘要： In imaging using 2-dimensional selective excitation pulses, regardless of applications thereof, a technique for obtaining a high quality image is provided.
    In the technique, a 2-dimensional selective excitation sequence is carried out while changing a coefficient for determining the cylinder diameter of a region excited by the 2-dimensional selective excitation sequence and a time difference for determining an offset position.
    The obtained excitation region and a desired region are compared with each other, and the coefficient and time difference with which the obtained excitation region and the desired region match each other are determined to be the optimum ones.
    The determination processing may be performed as an initial adjustment, may be performed according to need in each imaging, or may be performed on a per-application basis.

    摘要翻译： 在使用二维选择激励脉冲的成像中，无论其应用如何，都提供了获得高质量图像的技术。 在该技术中，在改变用于确定由2维选择性激励序列激励的区域的圆柱体直径的系数和用于确定偏移位置的时间差的同时，进行2维选择性激励序列。 将所获得的激发区域和期望区域进行比较，将获得的激发区域和期望区域相互匹配的系数和时间差确定为最佳激发区域。 可以根据每次成像中的需要执行确定处理作为初始调整，或者可以在每个应用的基础上执行。

    SIGNAL ACQUISITION AND PROCESSING METHOD AND APPARATUS FOR MAGNETIC RESONANCE IMAGING
    9.
    发明公开
    SIGNAL ACQUISITION AND PROCESSING METHOD AND APPARATUS FOR MAGNETIC RESONANCE IMAGING 审中-公开
    方法和装置采集和处理信号磁共振

    公开(公告)号：EP2413795A2

    公开(公告)日：2012-02-08

    申请号：EP10759226.3

    申请日：2010-03-23

    申请人： Tursiop Technologies LLC ,  Viswanathan, Raju

    发明人： VISWANATHAN, Raju

    IPC分类号： A61B5/055

    CPC分类号： G01R33/4833 ,  G01R33/3808

    摘要： A method and apparatus are disclosed for Magnetic Resonance Imaging using specialized signal acquisition and processing techniques for image reconstruction with a generally inhomogeneous static magnetic field. New signal processing methods for image reconstruction and for minimizing dephasing effects are disclosed. Imaging systems with smaller static magnetic field strengths and smaller hardware demands than those with homogeneous static magnetic fields are provided, leading to significant reductions in system size and cost as compared to standard MRI systems. Such systems can also exploit imaging coils having high Signal-to-Noise- Ratio (SNR), including those made from Carbon nanotube conductors, leading to further imaging system efficiencies.