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1. 发明授权

US06542770B2 Method of determining the position of a medical instrument 失效
标题翻译：确定医疗器械位置的方法
公开(公告)号：US06542770B2
公开(公告)日：2003-04-01
申请号：US09773421
申请日：2001-02-01
申请人： Waldemar Zylka , Jörg Sabczynski , Jürgen Weese
发明人： Waldemar Zylka , Jörg Sabczynski , Jürgen Weese
IPC分类号： A61B505
CPC分类号： A61B6/463 , A61B6/12 , A61B6/4441 , A61B6/547 , A61B34/20 , A61B2090/364 , A61B2090/374 , A61B2090/3764 , A61B2090/3945 , A61B2090/3979
摘要： Method and device for determining the position of a medical instrument, partially introduced into an object being examined, in a three-dimensional image data set of the object. In order to achieve a high accuracy of the position determination and minimize the expenditure required and thus save intricate registration steps prior to an intervention, simultaneously with the acquisition of an X-ray image, the spatial positions of the X-ray image and the spatial position of a medical instrument are acquired. Then, the spatial correlation between an X-ray image and a three-dimensional image data set is determined. This correlation is used to transform the spatial position of the medical instrument into a position relative to the three-dimensional image data set. This enables the formation of images containing image information acquired pre-operatively as well as intra-operatively, and also the reproduction of the instantaneous position of the medical instrument in the images.
摘要翻译：用于确定被检测物体中部分地被引入到被检查物体中的位置的方法和装置，在该物体的三维图像数据集中。为了实现位置确定的高精度并且最小化所需的支出，并且因此在干预之前保存错综复杂的登记步骤，与X射线图像的获取同时，X射线图像的空间位置和空间获得医疗器械的位置。然后，确定X射线图像和三维图像数据集之间的空间相关性。该相关性用于将医疗器械的空间位置变换为相对于三维图像数据集的位置。这使得能够形成包含在手术前和手术中获取的图像信息的图像，以及医学仪器在图像中的瞬时位置的再现。

2. 发明授权

US06574493B2 Method of localizing objects in interventional radiology 有权
标题翻译：介入放射学中对象局部化的方法
公开(公告)号：US06574493B2
公开(公告)日：2003-06-03
申请号：US09792097
申请日：2001-02-23
申请人： Volker Rasche , Georg Schmitz , Jörg Sabczynski , Waldemar Zylka , Johannes Jacobus Van Vaals
发明人： Volker Rasche , Georg Schmitz , Jörg Sabczynski , Waldemar Zylka , Johannes Jacobus Van Vaals
IPC分类号： A61B505
CPC分类号： A61B6/12 , A61B34/20 , A61B90/36 , A61B90/39 , A61B2034/2065 , A61B2090/376 , A61B2090/3983
摘要： The invention relates to a method enabling the localization of objects, for example surgical instruments, in interventional radiology. The method utilizes the known geometrical shape of the object to be localized in order to simulate projections therefrom for comparison with real projection images. Optimum correspondence between simulation and real image yields the desired object position and object orientation. The invention is based on digital image processing and can be used in conjunction with customary radiological diagnostic apparatus such as C-arm fluoroscopy apparatus, computed tomography apparatus or magnetic resonance tomography apparatus. Objects to be localized can be provided with markers whose spatial position yields an unambiguous projection image.
摘要翻译：本发明涉及一种使介入放射学中的物体（例如手术器械）能够定位的方法。该方法利用被定位的已知几何形状的物体来模拟其中的投影，以与实际投影图像进行比较。模拟和实际图像之间的最佳对应可以产生所需的对象位置和对象方向。本发明基于数字图像处理，并且可以与诸如C臂荧光透视装置，计算机断层摄影装置或磁共振断层摄影装置的常规放射诊断装置结合使用。可以提供要定位的对象，其标记的空间位置产生明确的投影图像。

3. 发明授权

US06490477B1 Imaging modality for image guided surgery 有权
标题翻译：影像引导手术成像模式
公开(公告)号：US06490477B1
公开(公告)日：2002-12-03
申请号：US09303317
申请日：1999-04-30
申请人： Waldemar Zylka , Roland Proksa , Willem P. Van Der Brug
发明人： Waldemar Zylka , Roland Proksa , Willem P. Van Der Brug
IPC分类号： A61B505
CPC分类号： A61B6/583 , A61B6/04 , A61B6/08 , A61B6/547 , G05B2219/39029
摘要： An imaging modality, in particular a mobile CT system, comprises an imaging system for imaging an object to be examined. The imaging modality is also provided with an image guided surgery system which includes a position measuring system for measuring positions within the object and a data processor for deriving a transformation between positions within the object and the corresponding positions in the image. The position measuring device is also arranged to measure the position of the imaging system and the data processor is arranged to derive the transformation from the position and/or orientation of the imaging system. The position measuring system is notably an optical position measuring system which is arranged to measure the position of the gantry of the CT system. The data processor is arranged to derive the transformation from the measured position of the gantry. A highly accurate result is obtained when a calibration is carried out which links the position of the CT gantry to the position of the scanning plane.
摘要翻译：成像模态，特别是移动CT系统，包括用于对被检查对象进行成像的成像系统。成像模式还提供有图像引导手术系统，其包括用于测量对象内的位置的位置测量系统和用于导出对象内的位置与图像中的对应位置之间的变换的数据处理器。位置测量装置还被布置成测量成像系统的位置，并且数据处理器被布置成从成像系统的位置和/或取向导出变换。位置测量系统特别是一种光学位置测量系统，其被布置成测量CT系统的台架的位置。数据处理器被安排为从台架的测量位置导出变换。当执行将CT机架的位置与扫描平面的位置联系起来的校准时，获得高度精确的结果。

4. 发明授权

US06956202B2 Method and device for calibrating an image pick-up device sensitive to magnetic fields and for imaging by means of such an image pick-up device 失效
标题翻译：用于校准对磁场敏感并通过这种图像拾取装置进行成像的图像拾取装置的方法和装置
公开(公告)号：US06956202B2
公开(公告)日：2005-10-18
申请号：US10294351
申请日：2002-11-13
申请人： Joerg Sabczynski , Waldemar Zylka
发明人： Joerg Sabczynski , Waldemar Zylka
IPC分类号： G01T1/00 , A61B6/00 , G01T1/17 , G01T7/00 , G06T5/00 , H04N5/32 , H04N5/335 , G01D18/00
CPC分类号： A61B6/583 , A61B6/4441
摘要： A description is given of a method and a device for the calibration of an image pick-up device which is sensitive to magnetic fields and for the imaging by means of such an image pick-up device. The image pick-up device is notably an image intensifier in X-ray systems such as, for example, systems provided with a C-arm. Calibration is performed essentially by forming and storing a look-up table whereby a plurality of magnetic field data acting on the image pick-up device is associated with calibration data required for correcting the distortions caused thereby. During imaging, the magnetic field data acting on the image pick-up device during the formation of an image is measured and the calibration data associated with this magnetic field data in the table is read out and used for the correction of the acquired image.
摘要翻译：给出了对磁场敏感的图像拾取装置的校准方法和装置以及借助于这种图像拾取装置进行成像的装置。图像拾取装置尤其是X射线系统中的图像增强器，例如具有C形臂的系统。基本上通过形成和存储查找表来执行校准，由此，作用在图像拾取装置上的多个磁场数据与校正由此引起的失真所需的校准数据相关联。在成像期间，测量在形成图像期间作用在图像拾取装置上的磁场数据，并且读出与该表中的该磁场数据相关联的校准数据，并用于校正所获取的图像。

5. 发明授权

US06739752B2 Method and device for calibrating a gravity-sensitive image pick-up device and for imaging by means of such an image pick-up device 失效
标题翻译：用于校准重力敏感图像拾取装置并通过这种图像拾取装置进行成像的方法和装置
公开(公告)号：US06739752B2
公开(公告)日：2004-05-25
申请号：US10294293
申请日：2002-11-14
申请人： Joerg Sabczynski , Waldemar Zylka
发明人： Joerg Sabczynski , Waldemar Zylka
IPC分类号： G01D1800
CPC分类号： A61B6/583 , A61B6/4441 , G06T5/006
摘要： A description is given of a method and a device for the calibration of an image pick-up device which is sensitive to gravity. Also described are a method and a device for imaging by means of such an image pick-up device; they are used in particular in X-ray systems, for example, systems provided with a C-arm. Calibration is performed essentially by forming and storing a look-up table whereby the calibration data required for the correction of distortions due to the supporting construction is associated with a plurality of position data of the supporting construction. During imaging the direction of the force of gravity relative to the supporting construction is measured; therefrom the position data is calculated and the calibration data associated with this data in the table is read out and used for the correction of the acquired image.
摘要翻译：给出了对重力敏感的图像拾取装置的校准方法和装置的描述。还描述了通过这种图像拾取装置进行成像的方法和装置; 它们特别用于X射线系统，例如具有C臂的系统。基本上通过形成和存储查找表来执行校准，由此由于支撑结构而校正失真所需的校准数据与支撑结构的多个位置数据相关联。在成像期间测量重力相对于支撑结构的方向; 从而计算位置数据，并且读出与表中的该数据相关联的校准数据，并用于校正所获取的图像。

6. 发明授权

US5872829A Method for the detection and correction of image distortions in medical imaging 失效
标题翻译：用于医学成像中图像失真检测和校正的方法
公开(公告)号：US5872829A
公开(公告)日：1999-02-16
申请号：US824621
申请日：1997-03-27
申请人： Hans-Aloys Wischmann , Waldemar Zylka
发明人： Hans-Aloys Wischmann , Waldemar Zylka
IPC分类号： A61B6/03 , A61B6/00 , G01N23/04 , G06T1/00 , H05G1/26
CPC分类号： A61B6/583 , G01N23/046 , G01N2223/419 , G01N2223/612 , Y10S378/901
摘要： In medical imaging in which a plurality of images of an object under examination are formed, image distortions are corrected using a phantom body which is present in the examination zone of the imaging device when the images of the object are acquired. It is known that image distortions in computer tomography apparatus are caused, for example, by calibration errors, by deviations from the adjusted table displacement speed, or by bending of the table under the weight of the patient. These image distortions are detected in the image of the phantom body in an acquired image and a correction rule is derived for the correction of image distortions in the entire acquired image. The phantom body is in the form of a frame of three elements of X or N shape, two of which extend parallel to one another and perpendicular to the third.
摘要翻译：在形成检查对象的多个图像的医疗图像中，当获取对象的图像时，使用存在于成像装置的检查区域中的体模体来校正图像失真。众所周知，计算机断层摄影装置中的图像失真例如通过校准误差，偏离调节的桌子位移速度，或通过患者的重量下的桌子弯曲而引起。在所获取的图像中，在体模体的图像中检测到这些图像失真，并且导出用于校正整个获取的图像中的图像失真的校正规则。幻影体是X或N形三个元件的框架的形式，其中两个彼此平行延伸并垂直于第三个元件。

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