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21 条记录 (耗时 0.017 秒)

    Method of magnetic resonance imaging
    1.
    发明授权
    Method of magnetic resonance imaging 失效
    磁共振成像方法

    公开(公告)号：US06453188B1

    公开(公告)日：2002-09-17

    申请号：US09333910

    申请日：1999-06-16

    申请人： Jan Henrik Ardenkjaer-Larsen ,  Oskar Axelsson ,  Klaes Golman ,  Georg Hansson ,  Ib Leunbach ,  Stefan Petersson ,  Lars-Goran Wistrand

    发明人： Jan Henrik Ardenkjaer-Larsen ,  Oskar Axelsson ,  Klaes Golman ,  Georg Hansson ,  Ib Leunbach ,  Stefan Petersson ,  Lars-Goran Wistrand

    IPC分类号： A61B505

    CPC分类号： G01R33/5601

    摘要： The invention relates to a method of magnetic imaging (MR) of a living sample comprising the steps of hyperpolarizing a hyperpolarizable gas ex-vivo and transferring the nuclear polarization from the hyperpolarized gas to the nuclei of an MR imaging agent, that is not hyperpolarizable, that is exposed to a uniform magnetic field and that is introduced in contact to the hyperpolarizable gas, separating the hyperpolarizable gas from the MR imaging agent, administering the MR imaging agent to the living sample, exciting NMR transitions in the nuclei of the imaging agent and detecting an NMR signal thereof.

    摘要翻译： 本发明涉及一种活体样品的磁成像（MR）方法，包括以下步骤：离子超极化超极化气体，并将核极化从超极化气体转移到MR成像剂的核，其不是超极化的， 暴露于均匀的磁场并且与超极化气体接触引入，将超极化气体与MR成像剂分离，将MR成像剂施用于活体样品，在显像剂的细胞核中激发NMR转变，以及 检测其NMR信号。

    Method and apparatus for the determination of electron density in a part volume of a body
    2.
    发明授权
    Method and apparatus for the determination of electron density in a part volume of a body 失效
    用于确定身体部分体积中的电子密度的方法和装置

    公开(公告)号：US3961186A

    公开(公告)日：1976-06-01

    申请号：US509514

    申请日：1974-09-26

    申请人： Ib Leunbach

    发明人： Ib Leunbach

    IPC分类号： G01N23/203 ,  A61B6/00 ,  G01N23/02 ,  G01N23/20

    CPC分类号： G01N23/02

    摘要： A method of and an apparatus for the determination of the electron density of small volumes of a body. Two narrow beams of ionizing radiation of substantially equal intensity are subsequently directed through the small volume in two different directions. The intensity of the transmitted radiation as well as the scattered radiation along said two directions is measured extra-corporally, which measurements are employed in computing the electron density of the small volume. The employed radiation is of such high energy that the Compton effect will be the wholly dominant absorption phenomenon in the volume as well as in the radiation paths in the two mentioned directions, and that the change in the absorption cross-section from primary to secondary radiation caused by the Compton shift will be substantial.

    摘要翻译： 用于确定体积小体积的电子密度的方法和装置。 基本上相同强度的两束电离辐射光束随后在两个不同的方向上穿过小体积。 辐射辐射的强度以及沿着两个方向的散射辐射是外部测量的，这些测量用于计算小体积的电子密度。 所使用的辐射具有如此高的能量，康普顿效应将是在上述两个方向上的体积以及辐射路径中的完全主要的吸收现象，并且吸收截面从初级辐射到次级辐射的变化 造成康普顿转变将会很大。

    Composition of positive and negative contrast agents for electron spin resonance enhanced magnetic resonance imaging
    4.
    发明授权
    Composition of positive and negative contrast agents for electron spin resonance enhanced magnetic resonance imaging 失效
    用于电子自旋共振增强磁共振成像的正和负对比剂的组成

    公开(公告)号：US5314681A

    公开(公告)日：1994-05-24

    申请号：US34662

    申请日：1993-03-22

    申请人： Ib Leunbach ,  Klaes Golman ,  Jo Klaveness

    发明人： Ib Leunbach ,  Klaes Golman ,  Jo Klaveness

    IPC分类号： G01R33/28 ,  G01R33/62 ,  A61B5/055 ,  A61K31/40 ,  A61K31/445 ,  G01V3/00

    CPC分类号： G01R33/5601 ,  G01R33/62 ,  Y10S436/806 ,  Y10S514/836 ,  Y10T436/24

    摘要： The invention relates to a modification of electron spin resonance enhanced magnetic resonance imaging (ESREMRI) in which two magnetically responsive materials (contrast agents) are introduced into the sample being investigated, one contrast agent serving as an ESREMRI free induction decay signal enhancing agent and the other as enhancement suppressing agent. In this way, image contrast may be enhanced further for regions in which the suppressing agent distributes poorly or not at all or which the suppressing agent reaches at a later time than the enhancing agent.

    摘要翻译： 本发明涉及电子自旋共振增强磁共振成像（ESREMRI）的修改，其中将两种磁响应材料（造影剂）引入正在研究的样品中，一种造影剂用作无ESREMRI的感应衰变信号增强剂， 其他作为增强抑制剂。 以这种方式，对于抑制剂分布不良或根本不分离的区域或抑制剂在比增强剂更迟的时间达到的区域，图像对比度可以进一步增强。

    Contrast agents
    5.
    发明申请
    Contrast agents 审中-公开
    对比剂

    公开(公告)号：US20070031339A1

    公开(公告)日：2007-02-08

    申请号：US10560065

    申请日：2004-11-06

    申请人： Oskar Axelsson ,  Ib Leunbach ,  Magnus Karlssov

    发明人： Oskar Axelsson ,  Ib Leunbach ,  Magnus Karlssov

    IPC分类号： A61K49/04

    CPC分类号： A61K49/0428 ,  A61K49/0419 ,  B22F1/0018 ,  B22F1/0059 ,  B22F9/24 ,  B82Y5/00 ,  B82Y30/00

    摘要： The present invention relates to particles comprising cores of tungsten or tungsten in mixture with other metallic elements as the contrast enhancing material wherein said core are coated, to pharmaceuticals containing such particles, and to the use of such pharmaceuticals specifically as contrast agents in diagnostic imaging, in particular in X-ray imaging.

    摘要翻译： 本发明涉及包含与其它金属元素作为对比增强材料的其它金属元素的钨或钨的核心的颗粒，其中所述芯被涂覆到包含这种颗粒的药物中，以及在诊断成像中特异性地用作造影剂的这种药物的用途， 特别是在X射线成像中。

    Method of electron spin resonance enhanced magnetic resonance imaging
    8.
    发明授权
    Method of electron spin resonance enhanced magnetic resonance imaging 失效
    电子自旋共振增强磁共振成像方法

    公开(公告)号：US4984573A

    公开(公告)日：1991-01-15

    申请号：US295031

    申请日：1988-12-23

    申请人： Ib Leunbach

    发明人： Ib Leunbach

    IPC分类号： A61B5/055 ,  A61K49/00 ,  A61K49/20 ,  G01N24/10 ,  G01R33/28 ,  G01R33/44 ,  G01R33/48 ,  G01R33/62

    CPC分类号： G01R33/5601 ,  A61K49/20 ,  G01R33/282 ,  G01R33/62 ,  Y10T436/24

    摘要： A method of generating a magnetic resonance image of a sample comprising introducing into the sample a contrast medium comprising a paramagnetic material having an electron spin resonance transition having a linewidth of 1 Gauss or less; exposing the sample to a first radiation of a frequency selected to excite nuclear spin transitions in selective nuclei in the sample and exposing the sample to a second radiation of a frequency which excites electron spin transitions coupled to nuclear spin transitions of at least some nuclei, the second radiation being of a frequency selected to excite an electron spin resonance transition of the paramagnetic material; detecting free induction decay signals from the sample; and generating therefrom a magnetic resonance image of the sample.

    MR-method for the in vivo measurement of temperature or pH-value by means of a hyperpolarised contrast agent
    9.
    发明授权
    MR-method for the in vivo measurement of temperature or pH-value by means of a hyperpolarised contrast agent 有权
    用于通过超极化造影剂体内测量温度或pH值的MR方法

    公开(公告)号：US07251519B2

    公开(公告)日：2007-07-31

    申请号：US10240754

    申请日：2001-04-12

    申请人： Oskar Axelsson ,  Jan Henrik Ardenkjaer-Larsen ,  Sven Månsson ,  Stefan Petersson ,  Ib Leunbach

    发明人： Oskar Axelsson ,  Jan Henrik Ardenkjaer-Larsen ,  Sven Månsson ,  Stefan Petersson ,  Ib Leunbach

    IPC分类号： A61B5/05

    CPC分类号： G01R33/5601 ,  G01R33/4804 ,  Y10T436/24

    摘要： The present invention provides a method of MR investigation of a sample, said method comprising: (i) nuclear spin polarizing a high T1 MR imaging agent which contains in its molecular structure at least two hyperpolarisable nuclei within the same molecule, the frequency difference between the two resonance lines from said nuclei, δυ, being dependent upon either the temperature or the pH of said sample; (ii) administering the nuclear spin polarized MR imaging agent to said sample; (iii) exposing said sample to a radiation at a frequency selected to excite nuclear spin transitions in said MR imaging agent; and (iv) detecting and manipulating magnetic resonance signals from said sample using a single-shot RARE acquisition sequence with shifted data acquisition.

    摘要翻译： 本发明提供了一种样品的MR研究方法，所述方法包括：（i）使自旋极化的高T1MR成像剂，其在其分子结构中包含在相同分子内的至少两个超极化核， 来自所述核的两条共振线，δupsilon，取决于所述样品的温度或pH值; （ii）向所述样品施用核自旋极化MR成像剂; （iii）将所述样品暴露于以选定的频率激发所述MR成像剂中的核自旋跃迁的辐射; 和（iv）使用具有移位数据采集的单次RARE获取序列检测和操纵来自所述样本的磁共振信号。