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    A METHOD ESTIMATING A PSEUDO HOUNSFIELD UNIT VALUE
    2.
    发明申请
    A METHOD ESTIMATING A PSEUDO HOUNSFIELD UNIT VALUE 审中-公开
    一种估计PSEUDO HOUNSFIELD单位值的方法

    公开(公告)号：WO2015150065A1

    公开(公告)日：2015-10-08

    申请号：PCT/EP2015/055539

    申请日：2015-03-17

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： SCHADEWALDT, Nicole ,  HELLE, Michael Günter ,  SCHULZ, Heinrich ,  RENISCH, Steffen

    IPC: G06T5/00 ,  G06T5/50 ,  G01R33/48

    CPC classification number: G01R33/5608 ,  A61B5/0042 ,  A61B5/055 ,  G01R33/481 ,  G01R33/4828 ,  G06T5/008 ,  G06T5/50 ,  G06T7/0012 ,  G06T7/11 ,  G06T2207/10088 ,  G06T2207/30008 ,  G06T2207/30024

    Abstract: The application discloses a method for estimating a pseudo CT Hounsfield Unit value for a volume element within a subject from a plurality of magnetic resonance images having different contrasts. The method comprising the steps of: determination of a relative prevalence of a first tissue class and second tissue class within the volume element from a first magnetic resonance image and second magnetic resonance image respectively. Then a a relative prevalence of a third tissue class is determined within the volume element based on substraction of a relative prevalence of the first and/or second tissue class from a total tissue prevalence. A reference Hounsfield Unit value is provided for the first, second and third tissue class. Finally, a pseudo Housfield value is estimated for the volume element by determining a weighted sum of the first, second and third reference Hounsfield unit value, with weight factors which are based on the determined relative prevalences of the first, second and third tissue class.

    Abstract translation: 本申请公开了一种用于从具有不同对比度的多个磁共振图像估计被摄体内的体积元素的伪CT Hounsfield单位值的方法。 该方法包括以下步骤：分别从第一磁共振图像和第二磁共振图像确定体积元素内的第一组织类别和第二组织类别的相对流行率。 然后，基于来自总组织流行率的第一和/或第二组织类别的相对流行率的减小，在体积元素内确定第三组织类别的相对流行率。 为第一，第二和第三组织分类提供参考Hounsfield单位值。 最后，通过基于所确定的第一，第二和第三组织类的相对流行性的权重因子确定第一，第二和第三参考Hounsfield单位值的加权和来估计体积元素的伪Housfield值。

    SYSTEM FOR SIMULTANEOUS PET/MR IMAGING
    3.
    发明申请
    SYSTEM FOR SIMULTANEOUS PET/MR IMAGING 审中-公开
    同时PET / MR成像系统

    公开(公告)号：WO2015022660A2

    公开(公告)日：2015-02-19

    申请号：PCT/IB2014/063907

    申请日：2014-08-14

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： SCHULZ, Volkmar ,  BERKER, Yannick ,  WEHNER, Jakob Adrian Clemens

    IPC: G01R33/422

    CPC classification number: G01R33/481 ,  G01R33/422 ,  G01R33/4818 ,  G01R33/56518 ,  G01R33/58

    Abstract: A combined PET/MR system includes an MR subsystem including a main field magnet (14) which generates a stationary magnetic field through an examination region (16), a gradient magnetic field system (18, 20, 22, 24) which applies magnetic field gradients across the examination region, and an RF system (26, 28, 32, 34, 36, 38) that applies RF excitation pulses to excite resonance in a subject in the examination region and receive magnetic resonance signals from the subject. A PET detector module (70) which is permanently or removably fixed in the examination region (16) to detect radiation from radiopharmaceuticals injected into the subject causes distortions in the magnetic field gradients. A plurality of probes (90) which are mounted in a fixed relationship to the PET detector module (70) measure magnetic field strength. A gradient magnetic field distortion correction system (110) determines distortions caused in the gradient magnetic fields and corrects the magnetic resonance signals accordingly. The PET detector module includes a plurality of RF shielded detector units (132) which are mounted in a circumferentially spaced relationship with a gap (136) therebetween through which RF excitation pulses and magnetic resonance signals pass.

    Abstract translation: 组合PET / MR系统包括MR子系统，其包括通过检查区域（16）产生固定磁场的主场磁体（14），施加磁场的梯度磁场系统（18,20,22,24） 跨越检查区域的梯度，以及RF系统（26,28,32,34,36,38），其施加RF激励脉冲以在检查区域中的受试者中激发谐振并且接收来自受试者的磁共振信号。 永久地或可移除地固定在检查区域（16）中以检测从注射到对象中的放射性药物的辐射的PET检测器模块（70）引起磁场梯度的变形。 以与PET检测器模块（70）固定的关系安装的多个探针（90）测量磁场强度。 梯度磁场失真校正系统（110）确定在梯度磁场中引起的失真并相应地校正磁共振信号。 PET检测器模块包括多个RF屏蔽检测器单元（132），其被安装成与其间的间隙（136）的周向间隔的关系，RF激发脉冲和磁共振信号经过该间隙。

    ＰＥＴ－ＭＲＩ装置
    5.
    发明申请
    ＰＥＴ－ＭＲＩ装置 审中-公开
    PET-MRI设备

    公开(公告)号：WO2013161910A1

    公开(公告)日：2013-10-31

    申请号：PCT/JP2013/062136

    申请日：2013-04-24

    Applicant: 株式会社東芝 ,  東芝メディカルシステムズ株式会社

    Inventor： 高山　卓三 ,  山形　仁 ,  岡本　和也

    IPC: A61B5/055 ,  G01T1/161 ,  G01T7/00

    CPC classification number: G01R33/481 ,  A61B5/0035 ,  A61B5/055 ,  A61B6/037 ,  A61B6/0457 ,  A61B6/4258 ,  A61B6/4417 ,  A61B6/5247 ,  A61B6/583 ,  A61B2576/00 ,  G01R33/56563 ,  G01T1/1603

    Abstract: 　実施形態に係るＰＥＴ－ＭＲＩ装置（１００）は、画像生成部（１０ａ、１０ｂ）と、導出部（１０ｃ）とを備える。画像生成部（１０ａ、１０ｂ）は、ＰＥＴの有効視野内に置かれた対象物を、ＰＥＴ及びＭＲＩのそれぞれにより撮像し、ＰＥＴ画像及びＭＲ画像を生成する。導出部（１０ｃ）は、ＰＥＴ画像に現れる対象物とＭＲ画像に現れる対象物との位置関係に基づき、ＭＲ画像の歪みを補正する歪み補正係数を導出する。

    Abstract translation: 根据本发明实施例的PET-MRI装置（100）具有图像生成单元（10a，10b）和导出单元（10c）。 图像生成单元（10a，10b）分别使用PET和MRI来对放置在PET的有效视野中的物体进行成像，并生成PET图像和MR图像。 推导单元（10c）基于PET图像中表示的对象与MR图像中表示的对象之间的位置关系导出用于校正MR图像失真的失真校正系数。

    NUCLEAR IMAGING SYSTEM
    6.
    发明申请
    NUCLEAR IMAGING SYSTEM 审中-公开
    核成像系统

    公开(公告)号：WO2013111041A1

    公开(公告)日：2013-08-01

    申请号：PCT/IB2013/050483

    申请日：2013-01-18

    Applicant: KONINKLIJKE PHILIPS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH

    Inventor： SCHWEIZER, Bernd ,  VON BUSCH, Heinrich Johannes Eckhard ,  RIBBING, Carolina ,  GOEDICKE, Andreas

    IPC: A61B6/03 ,  A61B6/00 ,  G06T11/00 ,  G01T1/161

    CPC classification number: A61B6/4417 ,  A61B5/055 ,  A61B5/1114 ,  A61B6/037 ,  A61B6/4429 ,  A61B6/481 ,  A61B6/5247 ,  A61B6/5264 ,  A61B6/547 ,  G01R33/481 ,  G06T11/005

    Abstract: Nuclear Imaging System The invention relates to a nuclear imaging system (1) for imaging an object (3) in an examination region. Multiple x-rays sources (2) generatefirst radiation being x-ray radiation (5), wherein the x-raysourcesarearrangedsuch that the x-rayradiation is indicativeofa propertyofthe object. Adetection unit (6) detectssecond radiation (7) from a nuclear element (8),after the second radiation has the traversed the object, and the first radiation generated by the multiple x-raysources, thereby inherently registering the detection ofthe first radiation and the second radiation.Areconstruction unit (9) reconstructsa corrected nuclear image of the object based on the detected first radiation and the detected second radiation, wherein the nuclear image is corrected with respect to the propertyofthe object and, because of the inherent registration, does not compriseimage artifacts caused by registration errors.

    Abstract translation: 核成像系统本发明涉及一种用于对检查区域中的物体（3）进行成像的核成像系统（1）。 多个X射线源（2）产生第一辐射为X射线辐射（5），其中x射线源被限制为x射线辐射指示物体的属性。 检测单元（6）在第二辐射已经穿过物体之后检测来自核元件（8）的第二辐射（7），以及由多个x射线源产生的第一辐射，从而固有地记录第一辐射的检测和 第二辐射。重建单元（9）基于检测到的第一辐射和所检测到的第二辐射重建对象的校正核图像，其中相对于对象的属性校正核图像，并且由于固有的注册，不包括图像 由注册错误引起的文物。

    ACTIVE RESISTIVE SHIMMING FOR MRI DEVICES
    7.
    发明申请
    ACTIVE RESISTIVE SHIMMING FOR MRI DEVICES 审中-公开
    用于MRI设备的主动电阻成像

    公开(公告)号：WO2013103477A1

    公开(公告)日：2013-07-11

    申请号：PCT/US2012/068872

    申请日：2012-12-11

    Applicant: VIEWRAY INCORPORATED

    Inventor： SHVARTSMAN, Shmaryu, M. ,  DEMPSEY, James, F. ,  DEMEESTER, Gordon

    IPC: G01R33/3875 ,  G01R33/48

    CPC classification number: G01R33/3875 ,  G01R33/3642 ,  G01R33/3806 ,  G01R33/385 ,  G01R33/4808 ,  G01R33/481 ,  G01R33/4812 ,  G01R33/4814

    Abstract: Active resistive shim coil assemblies (208) may be used in magnet- ic resonance imaging (MRI) systems to reduce in-homogeneity of the magnetic field in the imaging volume. Disclosed embodiments may be used with continuous systems, gapped cylindrical systems, or verti- cally gapped systems. Disclosed embodiments may also be used with an open MRI system and can be used with an instrument (104) placed in the gap (102) of the MRI system. An exemplary embodiment of the active resistive shim coil assembly of the present disclosure includes active resistive shim coils each operable to be energized by separate currents through a plurality of power channels. In some embodiments, the disclosed active resistive shim coil assemblies allow for various degrees of freedom to shim out field in-homogeneity.

    Abstract translation: 主动阻抗衬垫线圈组件（208）可用于磁共振成像（MRI）系统，以减小成像体积中磁场的均匀性。 公开的实施例可以与连续系统，间隙圆柱形系统或垂直间隙系统一起使用。 公开的实施例也可以与开放MRI系统一起使用，并且可以与放置在MRI系统的间隙（102）中的仪器（104）一起使用。 本公开的有源电阻衬片线圈组件的示例性实施例包括有源电阻衬垫线圈，其可操作以由通过多个功率通道的单独电流激励。 在一些实施例中，所公开的主动阻抗衬片线圈组件允许不同程度的自由度来均匀地摆放场。

    METHOD TO COMPUTE AND PRESENT BRAIN AMYLOID IN GRAY MATTER
    8.
    发明申请
    METHOD TO COMPUTE AND PRESENT BRAIN AMYLOID IN GRAY MATTER 审中-公开
    计算和存在灰质中的脑亚胺的方法

    公开(公告)号：WO2013072843A1

    公开(公告)日：2013-05-23

    申请号：PCT/IB2012/056379

    申请日：2012-11-13

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH

    Inventor： THIELE, Frank, Olaf ,  WENZEL, Fabian

    IPC: A61B6/03 ,  G01T1/29 ,  G06T7/00

    CPC classification number: A61B5/0035 ,  A61B5/0042 ,  A61B5/055 ,  A61B6/037 ,  A61B6/466 ,  A61B6/501 ,  A61B6/5247 ,  G01R33/481 ,  G06T7/0012 ,  G06T7/0014 ,  G06T2207/10088 ,  G06T2207/10104 ,  G06T2207/30016

    Abstract: An imaging work station (20) includes one or more processors programmed to receive (170)an image depicting a distribution of a radiotracer in a brain or other region of interest. The radiotracer includes at least one of [18F]-Flutemetamol, [18F]-Florbetaben, and [18F]-Florbetapir which highlights amyloid deposits. The image and a template or an MRI image of the region of interest which includes a segmented anatomical feature, such as gray matter, are registered (180)to a common space. A volume representation of the image which depicts the distribution of the radiotracer in the segmented gray matter and suppresses the radiotracer outside of the segmented anatomical feature in white matter is extracted (210).

    Abstract translation: 成像工作站（20）包括被编程为接收（170）描绘大脑或其他感兴趣区域中的放射性示踪剂的分布的图像的一个或多个处理器。 放射性示踪剂包括突出淀粉样蛋白沉积物的[18 F] - 十六烷基胺，[18 F] - 格列贝星和[18F] - 格列贝皮中的至少一种。 包括分割的解剖特征（例如灰质）的感兴趣区域的图像和模板或MRI图像被记录（180）到公共空间。 提取了描绘分段灰质中放射性示踪剂的分布并且抑制白质中分段解剖特征之外的放射性示踪剂的图像的体积表示（210）。

    VARIABLE PET DEVICE
    10.
    发明申请
    VARIABLE PET DEVICE 审中-公开
    可变PET设备

    公开(公告)号：WO2011149181A3

    公开(公告)日：2012-01-19

    申请号：PCT/KR2011002149

    申请日：2011-03-29

    Applicant: GACHON UNIVERSITY OF MEDICINE & SCIENCE INDUSTRY ACADEMIC COOPERATION FOUNDATION ,  CHO ZANGHEE ,  KIM YOUNG-BO ,  SON YOUNG-DON ,  KIM HANG-KEUN

    Inventor： CHO ZANGHEE ,  KIM YOUNG-BO ,  SON YOUNG-DON ,  KIM HANG-KEUN

    IPC: A61B5/055 ,  G01T1/161

    CPC classification number: A61B6/4266 ,  A61B6/037 ,  A61B6/4258 ,  A61B6/4275 ,  A61B6/4411 ,  A61B6/58 ,  A61B6/588 ,  G01R33/481

    Abstract: The present invention relates to a positron emission tomography (PET) device, and more particularly to, a PET device that involves changing the diameter of a detection means according to the size of a test subject. The PET device includes a body having an opening therein to receive a subject and a detection means surrounding the received subject in the circumferential direction of the opening. The detection means may detect radiation emitted by the subject. Additionally, the PET device includes a driving means driving the detection means. The detection means includes detection heads arranged in a first group in the circumferential direction of the opening, and detection heads disposed in a second group between the detection heads in the first group. The detection heads in the first group are moveable in a radial direction of the detection means by means of the driving means.

    Abstract translation: 正电子发射断层摄影（PET）装置技术领域本发明涉及一种正电子发射断层摄影（PET）装置，更具体地，涉及一种根据被检体的大小改变检测装置的直径的PET装置。 PET装置包括其中具有用于接收被检体的开口的主体和围绕开口的圆周方向的受检对象的检测装置。 检测装置可以检测受试者发射的辐射。 此外，PET装置包括驱动检测装置的驱动装置。 检测装置包括在开口的圆周方向上布置在第一组中的检测头，以及设置在第一组中的检测头之间的第二组中的检测头。 第一组中的检测头可通过驱动装置在检测装置的径向方向上移动。

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