• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:NL1028116A1
    申请号:NL1028116
    申请日:2005-01-25
    公开日:2005-08-03
    发明作者:Godrun Graf
    申请人:Siemens Ag；
    IPC主号:
    专利说明:

    Extract
    Method for improved evaluation of magnetic resonance images, in particular for recognizing and delimiting danger-exposed brain tissue, wherein a perfusion-weighted MR image and a diffusion-weighted MR image of one and the same body region are superimposed into a mismatch image. The invention also relates to a mismatch card for improved evaluation of magnetic resonance images, wherein a perfusion-weighted MR image and a diffusion-weighted MR image of the same body region are preferably superimposed in color contrasted on an image carrier.
    METHOD AND DEVICE FOR IMPROVED EVALUATION OF MAGNETIC RESONANCE IMAGES
    The invention relates to a method for improved evaluation of magnetic resonance images, in particular for recognizing and delimiting danger-exposed brain tissue, and to a device for performing this method.
    In order to be able to better represent tissue, in particular brain tissue, with the details relevant to a physician, various MR imaging methods are known, with the aid of which the relevant tissue regions can preferably be represented with different weightings of their respective state.
    For example, with MR perfusion imaging the so-called penumbra or the tissue-at-risk is displayed. With the help of an MR diffusion-weighted image one can very well display an irreversibly damaged area. However, the evaluation of these different recordings, which until now had to be carried out by visual comparison of the images, poses considerable difficulties in practice.
    SUMMARY OF THE INVENTION It is therefore an object of the invention to provide a method and a device based thereon for improved evaluation of magnetic resonance images, in particular for recognizing and delimiting dangerously exposed brain tissue, which enable the detailed visual comparison, which is always inaccurate in detail. making different images superfluous.
    To achieve this objective, it is provided in accordance with the invention that a perfusion-weighted MR image and a diffusion-weighted MR image of one and the same body region are superimposed into a mismatch image, the structures of the two MR images preferably being mixed before mixing. be laid out in different colors.
    Because of the superimposition of the images, the viewer immediately recognizes which area, for example in the event of a stroke, could be saved, so that it has not yet been irreversibly damaged.
    By means of the method according to the invention, a mismatch card is preferably created on which a perfusion-weighted MR image and a diffusion-weighted MR image of the same body region are preferably superimposed in color contrasted on an image carrier.
    Further advantages, features and special features of the invention appear from the following description of an exemplary embodiment and with reference to the drawing.
    Figure 1 shows a magnetic resonance image of a brain region calculated from a diffusion measurement,
    Figure 2 shows a map created during a perfusion evaluation of an MR measurement of the same brain region, and
    Fig. 3 shows a mismatch card, i.e. a representation of the images according to Figs. 1 and 2 superimposed on an image carrier.
    The dark area in the diffusion image according to Figure 1 shows the brain area that has already died, which is probably no longer salvable for the patient. The area recognizable in the perfusion image according to Figure 2, within which the dead area 1 is located, will also not recover if the patient is not treated. The superposition of the perfusion image according to Figure 2 with the diffusion-weighted image according to Figure 1 allows the physician to recognize the position of the damaged brain areas with one glance and also to assess much better where the critical sites are and what is actually still can be saved.
    In practice, the darker dead tissue area 1 and the more clearly recognizable, lighter damaged tissue area 2 will have a color contrasting design, whereby, even more so if the color intensity or the color gradation is changed depending on the degree of damage, the evaluator will have even better and better results. more detailed evaluation possibilities.
    权利要求:
    Claims (3)
    [1]
    Method for improved evaluation of magnetic resonance images, in particular for recognizing and delimiting danger-exposed brain tissue, characterized in that a perfusion-weighted MR image and a diffusion-weighted MR image of one and the same body region are superimposed into a mismatch image .
    [2]
    Method according to claim 1, characterized in that the structures of the perfusion-weighted MR image and of the diffusion-weighted MR image are applied in different colors before mixing.
    [3]
    3. Mismatch card for improved evaluation of magnetic resonance images, characterized in that a perfusion-weighted MR image and a diffusion-weighted MR image of the same body region are preferably superimposed in color contrasted on an image carrier.
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    同族专利:
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    CN1650800A|2005-08-10|
    DE102004005122A1|2005-08-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US8320647B2|2007-11-20|2012-11-27|Olea Medical|Method and system for processing multiple series of biological images obtained from a patient|
    JP5611614B2|2010-02-18|2014-10-22|株式会社日立メディコ|Magnetic resonance image analysis apparatus and magnetic resonance image analysis method|
    CN103339653B|2010-12-17|2016-11-23|奥胡斯大学|The method delineating tissue injury|
    KR101562923B1|2014-04-30|2015-10-23|한국과학기술원|Perfusion weighted imaging method|
    法律状态:
    2005-10-03| AD1A| A request for search or an international type search has been filed|
    2009-01-05| RD2N| Patents in respect of which a decision has been taken or a report has been made (novelty report)|Effective date: 20081023 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102004005122|2004-02-02|
    DE102004005122A|DE102004005122A1|2004-02-02|2004-02-02|Improved evaluation of magnetic resonance images involves superimposing perfusion-weighted magnetic resonance image, diffusion-weighted magnetic resonance image to make mismatch image for same body region before mixing in different colors|
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