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    • 1. 发明授权
    • X-ray unit having an automatically adjustable collimator
    • X射线单元具有自动调节的准直仪
    • US07340033B2
    • 2008-03-04
    • US10566665
    • 2004-07-19
    • Sabine MollusJürgen WeeseHenning Braess
    • Sabine MollusJürgen WeeseHenning Braess
    • G01N23/04
    • A61B6/469A61B6/06G21K1/02
    • The invention relates to a method and a unit for automatically adjusting a collimator (6). In this connection, a region (9) of interest inside the body is determined in an application-specific way from an analysis of first X-ray pictures, and the collimator (6) is then adjusted thereon. The region (9) of interest can, in particular, be chosen to be large enough for the irradiation field to cover all those positions of an organ (10) of interest that occur as a result of heartbeat and/or respiration. Preferably, a movement estimate' is undertaken during a current examination in order to be able to readjust the collimator (6) if necessary. If the region of interest cannot be localized, the collimator (6) is opened to a standard adjustment.
    • 本发明涉及一种用于自动调整准直器(6)的方法和单元。 在这方面,通过分析第一X射线照片,以应用特定的方式确定身体内的感兴趣区域(9),然后在其上调整准直器(6)。 特别地,感兴趣的区域(9)可以被选择为足够大以使照射场覆盖作为心跳和/或呼吸的结果而发生的感兴趣的器官(10)的所有位置。 优选地,在当前检查期间进行运动估计,以便能够在必要时重新调整准直器(6)。 如果感兴趣的区域不能被定位,则将准直器(6)打开以进行标准调节。
    • 2. 发明申请
    • X-ray unit having an automatically adjustable collimator
    • X射线单元具有自动调节的准直仪
    • US20060203966A1
    • 2006-09-14
    • US10566665
    • 2004-07-19
    • Sabine MollusJürgen WeeseHenning Braess
    • Sabine MollusJürgen WeeseHenning Braess
    • G21K1/04
    • A61B6/469A61B6/06G21K1/02
    • The invention relates to a method and a unit for automatically adjusting a collimator (6). In this connection, a region (9) of interest inside the body is determined in an application-specific way from an analysis of first X-ray pictures, and the collimator (6) is then adjusted thereon. The region (9) of interest can, in particular, be chosen to be large enough for the irradiation field to cover all those positions of an organ (10) of interest that occur as a result of heartbeat and/or respiration. Preferably, a movement estimate' is undertaken during a current examination in order to be able to readjust the collimator (6) if necessary. If the region of interest cannot be localized, the collimator (6) is opened to a standard adjustment.
    • 本发明涉及一种用于自动调整准直器(6)的方法和单元。 在这方面,通过分析第一X射线照片,以应用特定的方式确定身体内的感兴趣区域(9),然后在其上调整准直器(6)。 特别地,感兴趣的区域(9)可以被选择为足够大以使照射场覆盖作为心跳和/或呼吸的结果而发生的感兴趣的器官(10)的所有位置。 优选地,在当前检查期间进行运动估计,以便能够在必要时重新调整准直器(6)。 如果感兴趣的区域不能被定位,则将准直器(6)打开以进行标准调节。
    • 4. 发明授权
    • Automated measurement of objects using deformable models
    • 使用可变形模型自动测量物体
    • US08050469B2
    • 2011-11-01
    • US10521254
    • 2003-07-11
    • Michael KausJürgen WeeseSteven Lobregt
    • Michael KausJürgen WeeseSteven Lobregt
    • G06K9/00
    • G06T7/60Y10S128/922
    • The present invention relates to the field of digital imaging, in particular to the field of estimating geometrical properties of an anatomical object. According to the present invention, geometrical properties are automatically measured and geometrical properties which have a definition based on sub-parts of the object are derived. To do this, additional geometrical information is integrated into a surface model. Geometrical properties are included into the surface model by identifying and labelling sub-parts of the surface model and fitting geometric primitives to these sub-parts. This advantageously allows to identify these sub-parts on an unseen object surface and to automatically extract relevant geometric properties.
    • 本发明涉及数字成像领域,特别涉及估计解剖学对象的几何性质的领域。 根据本发明,自动地测量几何特性,并导出具有基于对象的子部分的定义的几何属性。 为此,额外的几何信息被集成到表面模型中。 通过识别和标记表面模型的子部分并将这些子部分拟合几何图元,将几何属性包含在表面模型中。 这有利地允许在未看见的物体表面上识别这些子部件并且自动提取相关的几何特性。
    • 6. 发明授权
    • Method of determining the position of a medical instrument
    • 确定医疗器械位置的方法
    • US06542770B2
    • 2003-04-01
    • US09773421
    • 2001-02-01
    • Waldemar ZylkaJörg SabczynskiJürgen Weese
    • Waldemar ZylkaJörg SabczynskiJürgen Weese
    • A61B505
    • A61B6/463A61B6/12A61B6/4441A61B6/547A61B34/20A61B2090/364A61B2090/374A61B2090/3764A61B2090/3945A61B2090/3979
    • 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.
    • 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。
    • 7. 发明授权
    • X-ray examination apparatus and method for generating distortion-free X-ray images
    • 用于产生无畸变X射线图像的X射线检查装置和方法
    • US06379043B1
    • 2002-04-30
    • US09601825
    • 2000-08-08
    • Waldermar ZylkaJörg SabczynskiJürgen Weese
    • Waldermar ZylkaJörg SabczynskiJürgen Weese
    • G01D1800
    • A61B6/583A61B6/4225A61B6/4441A61B6/547G01N23/04
    • The invention relates to an X-ray examination apparatus for and a method of forming distortion-free X-ray images, which apparatus and method enable the imaging properties of the C-arm X-ray system to be derived from the patient image. To this end, a reference image (FIG. 4) is formed in a reference orientation of the X-ray examination apparatus and the reference imaging properties of the C-arm X-ray system are determined on the basis of the positions of calibration members (7, 8), which are mounted on the image intensifier (2) and/or the X-ray source (3) and are reproduced, and the known geometry and position relative to the image intensifier (2) and/or the X-ray source (3); the positions of the calibration members (7, 8) reproduced in a patient X-ray image (FIG. 5) are compared with the positions of the calibration members (7, 8) in the reference image (FIG. 4) and distortions occurring in the patient X-ray image are corrected on the basis of differences between the reproduced positions of the calibration members (7, 8) in the patient X-ray image (FIG. 5) and in the reference image (FIG. 4).
    • 本发明涉及一种用于形成无畸变X射线图像的X射线检查装置和方法,该装置和方法使得能够从患者图像导出C臂X射线系统的成像特性。 为此,在X射线检查装置的基准方向上形成参考图像(图4),并且基于校准构件的位置确定C臂X射线系统的参考成像特性 (7,8),其安装在图像增强器(2)和/或X射线源(3)上并被再现,并且相对于图像增强器(2)和/或X的已知几何形状和位置 射源(3); 将在患者X射线图像(图5)中再现的校准构件(7,8)的位置与参考图像(图4)中的校准构件(7,8)的位置进行比较,并发生变形 基于患者X射线图像(图5)和参考图像(图4)中的校准构件(7,8)的再现位置之间的差异来校正患者X射线图像。