公开(公告)号：US07372944B2

公开(公告)日：2008-05-13

申请号：US11352716

申请日：2006-02-13

申请人： Philipp Bernhardt ,  Martin Hoheisel

发明人： Philipp Bernhardt ,  Martin Hoheisel

IPC分类号： H05G1/22

CPC分类号： A61B6/542 ,  A61B6/503 ,  A61B6/545

摘要： The invention relates to an x-ray diagnostics device having an x-ray tube for generating x-rays operated by a high voltage generator, having an x-ray detector for converting incident x-rays into electrical signals, having an image processing system and a control device for the duration of the x-ray pulse, in which parameters of the x-ray diagnostics device can be adjusted, with a computing unit being assigned to the control device, said computing unit determining the spatial frequency-dependent signal-to-noise ratio on the basis of the parameters and calculating therefrom the duration of the x-ray pulse and/or the remaining parameters required for a recording. The invention further relates to a method of this type for controlling the x-ray diagnostics device, in which the duration of the x-ray pulse is controlled such that the recognizability of relevant, moved objects is maximal.

摘要翻译： 本发明涉及一种具有用于产生由高压发生器操作的x射线的X射线管的X射线诊断装置，具有用于将入射的X射线转换为电信号的X射线检测器，具有图像处理系统和 控制装置，其中X射线脉冲的持续时间可以通过计算单元被分配给控制装置来调节x射线诊断装置的参数，所述计算单元确定空间频率相关信号到 - 根据参数计算噪声比，并从中计算x射线脉冲的持续时间和/或记录所需的剩余参数。 本发明还涉及这种类型的用于控制X射线诊断装置的方法，其中控制x射线脉冲的持续时间，使得相关的被移动物体的可识别性是最大的。

公开(公告)号：US07372943B2

公开(公告)日：2008-05-13

申请号：US11639159

申请日：2006-12-14

申请人： Philipp Bernhardt

发明人： Philipp Bernhardt

IPC分类号： H05G1/64

CPC分类号： A61B6/482 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/463 ,  A61B6/50

摘要： In recording projection images for dual absorptiometry, the optical thickness of an object being examined is determined on the basis of a projection image recorded in a high-energy range, and parameters for recording a projection image in the low-energy range are selected as a function of the determined optical thickness. The ratio between image quality and the radiation dosage of the object being examined can be optimized thereby.

摘要翻译： 在记录用于双吸收光谱测量的投影图像中，基于在高能量范围中记录的投影图像来确定被检查物体的光学厚度，并且将用于记录低能量范围内的投影图像的参数选择为 所确定的光学厚度的函数。 可以优化图像质量与被检查物体的辐射剂量之间的比例。

公开(公告)号：US07372935B2

公开(公告)日：2008-05-13

申请号：US11435186

申请日：2006-05-16

申请人： Philipp Bernhardt ,  Jan Boese ,  Marcus Pfister ,  Norbert Rahn

发明人： Philipp Bernhardt ,  Jan Boese ,  Marcus Pfister ,  Norbert Rahn

IPC分类号： A61B6/03

CPC分类号： A61B6/5235 ,  A61B5/107 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/5247 ,  G06T11/005 ,  G06T2211/432 ,  Y10S378/901

摘要： The invention relates to a method for “truncation correction” in an x-ray system, i.e. a correction method during the reconstruction of projection images of an object recorded from different projection angles, if parts of the object do not lie in the field of view of each projection image. The surface of the object is thereby optically detected and used during the reconstruction of projection images to supplement the missing image data.

摘要翻译： 本发明涉及一种在X射线系统中进行“截断校正”的方法，即在从不同投影角度记录的物体的投影图像的重建期间的校正方法，如果物体的部分不在视野内 的每个投影图像。 因此，在重建投影图像期间光学检测并使用对象的表面以补充丢失的图像数据。

公开(公告)号：US20060251213A1

公开(公告)日：2006-11-09

申请号：US11429139

申请日：2006-05-05

申请人： Philipp Bernhardt ,  Marcus Pfister

发明人： Philipp Bernhardt ,  Marcus Pfister

IPC分类号： G01N23/04

CPC分类号： A61B6/00 ,  A61B6/504 ,  A61B6/545 ,  G06T2207/30101

摘要： The invention relates to a method for presetting the imaging parameters during the generation of two-dimensional fluoroscopic x-ray images of a patient, wherein the optimally necessary dose for the fluoroscopic x-ray image is determined with the aid of a 3D representation, already present from prior examinations, of the internal structure of the patient and the intended imaging direction and this dose is used for the exposure of the fluoroscopic image.

摘要翻译： 本发明涉及一种用于在产生患者的二维透视X射线图像的过程中预设成像参数的方法，其中已经通过3D表示来确定荧光镜X射线图像的最佳必需剂量 从先前的检查出现患者的内部结构和预期的成像方向，并且该剂量用于透视图像的曝光。

公开(公告)号：US20060233304A1

公开(公告)日：2006-10-19

申请号：US11402329

申请日：2006-04-11

申请人： Philipp Bernhardt ,  Stefan Bohm ,  Bernhard Geiger

发明人： Philipp Bernhardt ,  Stefan Bohm ,  Bernhard Geiger

IPC分类号： H05G1/42

CPC分类号： G03B42/02 ,  A61B6/00 ,  A61B6/469 ,  H05G1/30

摘要： With a method for controlling the dose or dose rate when recording x-ray images by means of a detector comprising image elements which record a plurality of dose data values, an actual value is determined for the dose or dose rate from the totality of the data values recorded by the image elements of a predetermined image segment, said actual value being compared with a predetermined target value in order to control the dose or dose rate when recording a further x-ray image. In accordance with the invention, the actual value is determined such that on the basis of a frequency distribution of the dose data values of the image elements assigned to the dominant, a p-quantile is determined, and that the dose data value assigned to the p-quantile is used to determine the actual value.

摘要翻译： 利用包括记录多个剂量数据值的图像元素的检测器记录X射线图像时的剂量或剂量率的控制方法，根据数据的全部来确定剂量或剂量率的实际值 由预定图像段的图像元素记录的值，将所述实际值与预定目标值进行比较，以便在记录另外的X射线图像时控制剂量或剂量率。 根据本发明，确定实际值，使得基于分配给主导的图像元素的剂量数据值的频率分布，确定p分位数，并且分配给 p分位数用于确定实际值。

公开(公告)号：US20060002513A1

公开(公告)日：2006-01-05

申请号：US11170661

申请日：2005-06-29

申请人： Philipp Bernhardt ,  Marcus Pfister ,  Rudolf Sollacher ,  Volker Tresp

发明人： Philipp Bernhardt ,  Marcus Pfister ,  Rudolf Sollacher ,  Volker Tresp

IPC分类号： H05G1/42

CPC分类号： A61B6/481 ,  A61B6/4035 ,  A61B6/504 ,  A61B6/542 ,  A61B6/544 ,  A61B6/583 ,  A61B6/588

摘要： A method and a suitable x-ray device (1) for carrying out the method are specified for effective and operationally simplified user-specific optimization of a parameter configuration (K) of an x-ray device (1), said configuration comprising at least one recording parameter (U,I,t,F). It is accordingly provided that a user (20) is shown a plurality of reference images (V, V1) for different reference parameter sets (PV) from a reference memory (21) in which are stored a large number of reference images (V, V0) each with an associated reference parameter set (PV), that for each reference image (V, V1) shown the user (20) submits an assessment (BM) of the image quality (V, V1), and that on the basis of the submitted assessments (BM) an optimized parameter configuration (K) is created from the reference parameter sets (PV) of the reference images (V, V1) shown.

摘要翻译： 指定用于执行该方法的方法和合适的x射线装置（1），用于有效和操作地简化X射线装置（1）的参数配置（K）的用户特定优化，所述配置至少包括 一个记录参数（U，I，t，F）。 因此，用户（20）从参考存储器（21）中显示用于不同参考参数组（PV）的多个参考图像（V，V 1），其中存储了大量参考图像（V ，V 0），每个具有相关联的参考参数集（PV），对于所示的每个参考图像（V，V 1），用户（20）提交图像质量（V，V 1）的评估（BM），以及 根据所提交的评估（BM），根据所示的参考图像（V，V 1）的参考参数组（PV）创建优化参数配置（K）。

公开(公告)号：US10307127B2

公开(公告)日：2019-06-04

申请号：US15258296

申请日：2016-09-07

申请人： Philipp Bernhardt ,  Dirk Ertel ,  Michael Stark

发明人： Philipp Bernhardt ,  Dirk Ertel ,  Michael Stark

IPC分类号： A61B6/00 ,  A61N5/10 ,  A61B6/03 ,  G01N23/04

摘要： X-ray image data of an examination subject is acquired for an acquisition period by an X-ray detector of an X-ray system simultaneously with a decay process of a radioactive material taking place in or on the examination subject. The X-ray image data includes information relating to an X-ray attenuation distribution of the examination subject and information relating to the decay process. Correction image data representing the information relating to the decay process in the X-ray image data for the acquisition period is determined. Corrected X-ray image data for the acquisition period is generated using the X-ray image data and the correction image data.

公开(公告)号：US10159452B2

公开(公告)日：2018-12-25

申请号：US15491684

申请日：2017-04-19

申请人： Philipp Bernhardt ,  Dirk Ertel

发明人： Philipp Bernhardt ,  Dirk Ertel

IPC分类号： G06K9/00 ,  A61B6/00 ,  G06T5/00 ,  G06T5/10 ,  G06T5/50 ,  H04N5/217 ,  H04N5/32 ,  H04N5/365 ,  H04N17/00

摘要： A method for correction of an x-ray image recorded with an x-ray device with an anti-scatter grid for effects of the anti-scatter grid is provided. The anti-scatter grid has a spatially periodically repeating geometrical embodiment, and a calibration image recorded without an imaging object is used. The calibration image and the x-ray image are transformed by a transformation into the position frequency space. In the position frequency space, adaptation parameters describing changes of the calibration image optimizing a measure of matching between the x-ray image and the calibration image are established. For correction, the adapted calibration image is subtracted from the x-ray image, and the x-ray image is transformed back into the position space again using an inverse of the transformation.

公开(公告)号：US20170228863A1

公开(公告)日：2017-08-10

申请号：US15418892

申请日：2017-01-30

申请人： Philipp Bernhardt

发明人： Philipp Bernhardt

IPC分类号： G06T7/00 ,  G06T11/00 ,  A61B6/00 ,  G06T11/60

CPC分类号： G06T7/0016 ,  A61B6/12 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/487 ,  A61B6/504 ,  A61B6/5235 ,  A61B6/5294 ,  G06T11/001 ,  G06T11/60 ,  G06T2207/10116 ,  G06T2207/20224 ,  G06T2207/30101

摘要： A method is provided for determining a navigation image displaying features of a region of interest of a patient, (e.g., used during a medical intervention). The method includes determining a first subtraction image by recording a first X-ray image with an X-ray device and subtracting a mask image. The method also includes determining a second subtraction image by recording a second X-ray image with the X-ray device and by subtracting the mask image or a further mask image. Additionally, the navigation image is determined by superimposing the first and the second subtraction image. At least one of the subtraction images is preprocessed before the superimposition by transfer from a gray-value space into a color space that is different from a color space of the other subtraction image. The navigation image is determined in color and/or the dynamics of at least one of the subtraction images are compressed.

公开(公告)号：US20170071561A1

公开(公告)日：2017-03-16

申请号：US15258296

申请日：2016-09-07

申请人： Philipp Bernhardt ,  Dirk Ertel ,  Michael Stark

发明人： Philipp Bernhardt ,  Dirk Ertel ,  Michael Stark

IPC分类号： A61B6/00 ,  A61B6/03 ,  A61N5/10

CPC分类号： A61B6/5205 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/4258 ,  A61B6/4441 ,  A61B6/486 ,  A61B6/5217 ,  A61B6/545 ,  A61N5/10 ,  A61N5/1001 ,  A61N5/1049 ,  A61N2005/1061

摘要： X-ray image data of an examination subject is acquired for an acquisition period by an X-ray detector of an X-ray system simultaneously with a decay process of a radioactive material taking place in or on the examination subject. The X-ray image data includes information relating to an X-ray attenuation distribution of the examination subject and information relating to the decay process. Correction image data representing the information relating to the decay process in the X-ray image data for the acquisition period is determined. Corrected X-ray image data for the acquisition period is generated using the X-ray image data and the correction image data.

摘要翻译： X射线系统的X射线检测器与检查对象中或其上发生的放射性物质的衰减过程同时获取检查对象的X射线图像数据。 X射线图像数据包括与检查对象的X射线衰减分布有关的信息以及与衰减处理有关的信息。 确定表示与获取期间的X射线图像数据中的衰减处理有关的信息的校正图像数据。 使用X射线图像数据和校正图像数据生成用于采集周期的校正的X射线图像数据。