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    Registration of CT image onto ultrasound images
    3.
    发明公开
    Registration of CT image onto ultrasound images 有权
    注册会员CT-Bild mit Ultraschallbildern

    公开(公告)号：EP2131326A3

    公开(公告)日：2011-12-07

    申请号：EP09007286.9

    申请日：2009-06-02

    申请人： MEDISON CO., LTD. ,  Korea Advanced Institute of Science and Technology

    发明人： Hyun, Dong Gyu ,  Ra, Jong Beom ,  Lee, Duhgoon ,  Nam, Woo Hyun ,  Kang, Dong-Goo

    IPC分类号： G06T7/00 ,  A61B5/00

    CPC分类号： A61B6/032 ,  A61B6/5247 ,  A61B6/541 ,  A61B8/00 ,  A61B8/5238 ,  G06T7/33 ,  G06T7/38 ,  G06T2207/10081 ,  G06T2207/10132 ,  G06T2207/30004

    摘要： Embodiments for registering a CT image onto ultrasound images are disclosed. At a preoperative stage, a plurality of first ultrasound images are formed during a respiratory cycle and a CT image is obtained at the maximum inspiration. The CT image is registered onto each of the ultrasound images to thereby form ultrasound-CT registered images. The ultrasound-CT registered images may be stored in the storage unit. Subsequently, at an intraoperative stage, a plurality of second ultrasound images may be sequentially formed in real time. Similarities may be measured between the first ultrasound images and the second ultrasound images, and the ultrasound-CT registered images, each corresponding to each of the first ultrasound images having highest similarity to the second ultrasound image may be retrieved. The retrieved ultrasound image and the second ultrasound image may be displayed at the same time.

    摘要翻译： 公开了将CT图像登记到超声图像上的实施例。 在术前阶段，在呼吸周期中形成多个第一超声图像，并以最大的灵感获得CT图像。 将CT图像记录在每个超声图像上，从而形成超声CT登记图像。 超声CT登记图像可以存储在存储单元中。 随后，在术中阶段，可以实时地依次形成多个第二超声图像。 可以在第一超声波图像和第二超声波图像之间测量相似度，并且可以检索每个对应于与第二超声图像具有最高相似性的第一超声图像中的每一个的超声CT登记图像。 可以同时显示检索到的超声图像和第二超声图像。

    Providing a 2-dimensional CT image corresponding to a 2-dimensional ultrasound image
    4.
    发明公开
    Providing a 2-dimensional CT image corresponding to a 2-dimensional ultrasound image 审中-公开
    Bereitstellung eines 2D-CT-Bilds entsprechend einem 2D-Ultraschallbild

    公开(公告)号：EP2293245A1

    公开(公告)日：2011-03-09

    申请号：EP10170226.4

    申请日：2010-07-21

    申请人： Medison Co., Ltd. ,  Korea Advanced Institute of Science and Technology

    发明人： Hyun, Dong Gyu ,  Ra, Jong Beom ,  Lee, Duhgoon ,  Nam, Woo Hyun

    IPC分类号： G06T7/00

    CPC分类号： A61B8/4218 ,  G06T7/38 ,  G06T2207/30004

    摘要： There is disclosed a system and method for providing a 2-dimensional CT image corresponding to a 2-dimensional ultrasound image by performing an image registration between a 3-dimensional ultrasound image and a 3-dimensional CT image. The system comprises: a CT image forming unit configured to form a plurality of 3-dimensional CT images for an object of interest inside a target object; an ultrasound image forming unit configured to form at least one 3-dimensional ultrasound image for the object of interest; a processor configured to perform image registration between the 3-dimensional CT images and the at least one 3-dimensional ultrasound image to obtain a first transform function; and a user input unit configured to receive input information from a user, wherein the ultrasound image forming unit is further configured to form a 2-dimensional ultrasound image from the at least one 3-dimensional ultrasound image based on the input information, and wherein the processor is further configured to obtain a plurality of 2-dimensional CT images from the 3-dimensional CT images based on the input information and the first transform function and to detect similarities between the 2-dimensional ultrasound image and the 2-dimensional CT images to select one of the 2-dimensional CT images corresponding to the 2-dimensional ultrasound image.

    摘要翻译： 公开了通过在3维超声波图像和3维CT图像之间进行图像配准来提供与2维超声图像对应的2维CT图像的系统和方法。 该系统包括：CT图像形成单元，被配置为在目标对象内形成感兴趣对象的多个3维CT图像; 超声波图像形成单元，被配置为形成用于感兴趣对象的至少一个3维超声图像; 处理器，被配置为在所述3维CT图像与所述至少一个3维超声图像之间执行图像配准以获得第一变换函数; 以及用户输入单元，被配置为从用户接收输入信息，其中所述超声图像形成单元还被配置为基于所述输入信息从所述至少一个3维超声图像形成2维超声图像，并且其中 处理器还被配置为基于输入信息和第一变换函数从三维CT图像获得多个二维CT图像，并且检测二维超声图像与二维CT图像之间的相似性 选择对应于二维超声图像的二维CT图像之一。

    System and method for providing 2-dimensional computerized-tomography image corresponding to 2-dimensional ultrasound image
    5.
    发明公开
    System and method for providing 2-dimensional computerized-tomography image corresponding to 2-dimensional ultrasound image 有权
    系统和方法，用于提供二维CT图像，其对应于2维超声图像

    公开(公告)号：EP2293244A1

    公开(公告)日：2011-03-09

    申请号：EP10170225.6

    申请日：2010-07-21

    申请人： Medison Co., Ltd. ,  Korea Advanced Institute of Science and Technology

    发明人： Hyun, Dong Gyu ,  Ra, Jong Beom ,  Lee, Duhgoon ,  Nam, Woo Hyun

    IPC分类号： G06T7/00

    CPC分类号： A61B5/0035 ,  A61B6/032 ,  A61B8/13 ,  G06F19/00 ,  G06T7/38 ,  G06T2207/30004

    摘要： Embodiments for providing a 2-diemsional (D) computerized-tomography (CT) image corresponding to a 2-D ultrasound image through image registration between 3-D ultrasound and CT images are disclosed. An imaging system 100 comprises a CT imaging unit 110, an ultrasound image forming unit 120, a storing unit 130, a processor 140 and a display unit 150. The processor 140 extracts the 2-D CT image from the 3-D ultrasound-CT registered image by performing a rigid-body transform upon the 3-D ultrasound image and calculating similarities between reference images and the 2-D ultrasound images, wherein the reference images arc obtained through the rigid-body transform.

    摘要翻译： 通过图像配准3-D超声和CT图像之间提供两diemsional（D）计算机断层层析成像（CT）图像对应于一个2-D超声图像的实施例是盘游离缺失。 成像系统100包括CT成像单元110的超声波图像形成单元120，存储单元130，处理器140和显示单元150中。处理器140只提取从3-D超声-CT的2-D CT图像 通过进行刚体变换在所述3-D超声图像，并计算基准图像和2-D超声图像之间的相似性，通过worin所述刚体变换而得到的参考图像弧注册图像。

    Non-Rigid Registration Between CT Images and Ultrasound Images
    6.
    发明公开
    Non-Rigid Registration Between CT Images and Ultrasound Images 审中-公开
    Nicht starre Registrierung zwischen CT-Bildern und Ultraschallbildern

    公开(公告)号：EP2131212A3

    公开(公告)日：2011-10-05

    申请号：EP09161545.0

    申请日：2009-05-29

    申请人： MEDISON CO., LTD. ,  Korea Advanced Institute of Science and Technology

    发明人： Hyun, Dong Gyu ,  Ra, Jong Beom ,  Nam, Woo Hyun ,  Lee, Duhgoon

    IPC分类号： G01S15/89 ,  A61B6/03

    CPC分类号： A61B5/04284 ,  A61B6/032 ,  A61B6/5247 ,  A61B8/13 ,  A61B8/4416 ,  G06T7/187 ,  G06T7/33 ,  G06T2207/10081 ,  G06T2207/10132 ,  G06T2207/30004

    摘要： There are disclosed embodiments for non-rigid image registration between 3-dimensional ultrasound and CT images by using intensity and gradient information of vessels and diaphragm. An ultrasound image forming unit transmits/receives ultrasound signals to/from a target object to thereby output electrical receive signals, and forms 3-dimensional ultrasound images based on the electrical receive signals. A CT image forming unit forms 3-dimensional CT images of the target object. A registration unit determines first and second objective functions associated with diaphragm and vessel regions of the target object, respectively, based on intensity and gradient information upon portions corresponding to the diaphragm and vessel regions in each of the 3-dimensional ultrasound and CT images. The registration unit performs non-rigid image registration between the 3-dimensional ultrasound images and the 3-dimensional CT images based on the first and second objective functions.

    摘要翻译： 通过使用容器和隔膜的强度和梯度信息，公开了用于3维超声和CT图像之间的非刚性图像配准的实施例。 超声波图像形成单元向目标对象发送/接收超声信号，从而输出电接收信号，并且基于电接收信号形成3维超声图像。 CT图像形成单元形成目标对象的3维CT图像。 登记单元基于与三维超声和CT图像中的每一个中的隔膜和血管区域相对应的部分上的强度和梯度信息，分别确定与目标对象的隔膜和血管区域相关联的第一和第二目标函数。 注册单元基于第一和第二目标函数在3维超声图像和3维CT图像之间执行非刚性图像配准。

    Anatomical feature extraction from an ultrasound liver image
    7.
    发明公开
    Anatomical feature extraction from an ultrasound liver image 审中-公开
    Extraktion eines解剖学Merkmals aus einem Ultraschallbild der Leber

    公开(公告)号：EP2130497A1

    公开(公告)日：2009-12-09

    申请号：EP09161527.8

    申请日：2009-05-29

    申请人： MEDISON CO., LTD. ,  Korea Advanced Institute of Science and Technology

    发明人： Hyun, Dong Gyu ,  Ra, Jong Beom ,  Nam, Woo Hyun ,  Kang, Dong-Goo ,  Lee, Duhgoon

    IPC分类号： A61B8/08 ,  G06T5/00 ,  G06T7/00

    CPC分类号： G06T5/30 ,  A61B8/08 ,  A61B8/4416 ,  A61B8/483 ,  G06T5/002 ,  G06T5/008 ,  G06T7/11 ,  G06T7/187 ,  G06T7/30 ,  G06T2207/10136 ,  G06T2207/20192 ,  G06T2207/30056

    摘要： There is disclosed an embodiment for extracting anatomical features from a 3-dimensional B-mode ultrasound liver image for image registration. A system extracts anatomical features from a 3-dimensional B-mode ultrasound liver image for image registration. An image forming unit forms a 3-dimensional ultrasound liver image based on ultrasound signals reflected from the liver. A diaphragm extracting unit extracts a diaphragm region from the 3-dimensional B-mode ultrasound liver image. A vessel extracting unit extracts vessel regions from the 3-dimensional ultrasound liver image. A diaphragm refining unit refines the extracted diaphragm region with the extracted vessel regions to remove clutters from the diaphragm region. A registration unit extracts sample points from the diaphragm region with the clutters removed and the vessel regions for image registration.

    摘要翻译： 公开了用于从用于图像配准的三维B模式超声肝图像中提取解剖特征的实施例。 系统从三维B模式超声肝图像中提取解剖特征，用于图像配准。 图像形成单元基于从肝脏反射的超声信号形成3维超声肝图像。 隔膜提取单元从3维B模式超声肝图像提取隔膜区域。 血管提取单元从3维超声肝图像提取血管区域。 隔膜精制单元用提取的容器区域来提取抽出的隔膜区域，以从隔膜区域去除杂物。 注册单元从去除了杂散物的隔膜区域和用于图像配准的容器区域中提取取样点。