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1. 发明申请

US20090169088A1 METHOD FOR OPERATING AN X-RAY DIAGNOSTIC APPARATUS FOR DETERMINING QUALITY VALUES 有权
标题翻译：用于确定质量值的X射线诊断装置的方法
公开(公告)号：US20090169088A1
公开(公告)日：2009-07-02
申请号：US12401295
申请日：2009-03-10
申请人： Stefan Bohm , Peter Durlak , Volker Heer , Martin Kolarjk
发明人： Stefan Bohm , Peter Durlak , Volker Heer , Martin Kolarjk
IPC分类号： G06K9/00
CPC分类号： G06T7/0002 , A61B6/504 , A61B6/583 , H04N5/325 , Y10S128/922
摘要： A method for checking an x-ray diagnostic apparatus is provided. Fluoroscopic series of x-ray images of a technical phantom are digitally acquired and stored. Difference between a dynamic image and a background image is calculated. A measuring field is predicted. Priori information about the shape of a clinically relevant object is determined. Hough transformation on a gray value image corresponding to the difference is applied. Contrast of the object from the Hough-transformed gray value image is determined. A square of the determined contrast is calculated. A noise variance is calculated by determining a sum of a noise variance of a homogenous image region and a variance of the background image. A contrast-to-noise ratio of the determined contrast and the calculated noise variance is determined. A square of the contrast-to-noise ratio is dynamically averaged. A Clinical Relevant Fluoroscopy Performance index for the x-ray diagnostic apparatus is determined.
摘要翻译：提供了一种用于检查x射线诊断装置的方法。数字获取和存储技术幻像的荧光系列X射线图像。计算动态图像和背景图像之间的差异。预测测量场。确定关于临床相关对象的形状的优先信息。应用与差异对应的灰度值图像上的霍夫变换。确定来自霍夫变换灰度值图像的对象的对比度。计算确定的对比度的平方。通过确定均匀图像区域的噪声方差和背景图像的方差的和来计算噪声方差。确定所确定的对比度和所计算的噪声方差的对比噪声比。动态平均对比噪声比的平方。确定X线诊断仪的临床相关荧光检查性能指标。

2. 发明申请

US20060126911A1 X-ray diagnostic apparatus and method for operating an x-ray diagnostic apparatus for determining quality values 有权
公开(公告)号：US20060126911A1
公开(公告)日：2006-06-15
申请号：US11293444
申请日：2005-12-02
申请人： Stefan Bohm , Peter Durlak , Volker Heer , Martin Kolarjk
发明人： Stefan Bohm , Peter Durlak , Volker Heer , Martin Kolarjk
IPC分类号： G06K9/00
CPC分类号： G06T7/0002 , A61B6/504 , A61B6/583 , H04N5/325 , Y10S128/922
摘要： The invention relates to an angiographic x-ray diagnostic apparatus with an x-ray radiator having an x-ray tube, with a patient positioning table having a radiation-transparent positioning plate and mattress, with an x-ray detector, with an imaging system, an image processing unit and a measuring device to which the output signals of the x-ray detector are fed and which has a first device for determining a value determining the reproduction quality of clinically relevant objects, a second device for determining local variances of the noise in a homogenous image region of different x-ray images and a device for taking the ratio of the output values of the two devices.

3. 发明授权

US07826651B2 Method for operating an x-ray diagnostic apparatus for determining quality values 有权
标题翻译：用于操作用于确定质量值的x射线诊断装置的方法
公开(公告)号：US07826651B2
公开(公告)日：2010-11-02
申请号：US12401295
申请日：2009-03-10
申请人： Stefan Böhm , Peter Durlak , Volker Heer , Martin Kolarjk
发明人： Stefan Böhm , Peter Durlak , Volker Heer , Martin Kolarjk
IPC分类号： G06K9/00
CPC分类号： G06T7/0002 , A61B6/504 , A61B6/583 , H04N5/325 , Y10S128/922
摘要： A method for checking an x-ray diagnostic apparatus is provided. Fluoroscopic series of x-ray images of a technical phantom are digitally acquired and stored. Difference between a dynamic image and a background image is calculated. A measuring field is predicted. Priori information about the shape of a clinically relevant object is determined. Hough transformation on a gray value image corresponding to the difference is applied. Contrast of the object from the Hough-transformed gray value image is determined. A square of the determined contrast is calculated. A noise variance is calculated by determining a sum of a noise variance of a homogenous image region and a variance of the background image. A contrast-to-noise ratio of the determined contrast and the calculated noise variance is determined. A square of the contrast-to-noise ratio is dynamically averaged. A Clinical Relevant Fluoroscopy Performance index for the x-ray diagnostic apparatus is determined.
摘要翻译：提供了一种用于检查x射线诊断装置的方法。数字获取和存储技术幻像的荧光系列X射线图像。计算动态图像和背景图像之间的差异。预测测量场。确定关于临床相关对象的形状的优先信息。应用与差异对应的灰度值图像上的霍夫变换。确定来自霍夫变换灰度值图像的对象的对比度。计算确定的对比度的平方。通过确定均匀图像区域的噪声方差和背景图像的方差的和来计算噪声方差。确定所确定的对比度和所计算的噪声方差的对比噪声比。动态平均对比噪声比的平方。确定X线诊断仪的临床相关荧光检查性能指标。

4. 发明授权

US07539336B2 X-ray diagnostic apparatus and method for operating an x-ray diagnostic apparatus for determining quality values 有权
标题翻译：用于操作用于确定质量值的X射线诊断装置的X射线诊断装置和方法
公开(公告)号：US07539336B2
公开(公告)日：2009-05-26
申请号：US11293444
申请日：2005-12-02
申请人： Stefan Böhm , Peter Durlak , Volker Heer , Martin Kolarjk
发明人： Stefan Böhm , Peter Durlak , Volker Heer , Martin Kolarjk
IPC分类号： G06K9/00
CPC分类号： G06T7/0002 , A61B6/504 , A61B6/583 , H04N5/325 , Y10S128/922
摘要： The invention relates to an angiographic x-ray diagnostic apparatus with an x-ray radiator having an x-ray tube, with a patient positioning table having a radiation-transparent positioning plate and mattress, with an x-ray detector, with an imaging system, an image processing unit and a measuring device to which the output signals of the x-ray detector are fed and which has a first device for determining a value determining the reproduction quality of clinically relevant objects, a second device for determining local variances of the noise in a homogenous image region of different x-ray images and a device for taking the ratio of the output values of the two devices.
摘要翻译：本发明涉及具有x射线管的x射线辐射器的血管造影X射线诊断装置，其中患者定位台具有辐射透明的定位板和床垫，具有x射线检测器，具有成像系统，图像处理单元和测量装置，X射线检测器的输出信号被馈送到该图像处理单元和测量装置，并且具有用于确定确定临床相关对象的再现质量的值的第一装置，用于确定临床相关对象的再现质量的第二装置，在不同X射线图像的均匀图像区域中的噪声和用于获取两个装置的输出值的比率的装置。

5. 发明授权

US07965333B2 Method for noise correction for a flat-panel detector 有权
标题翻译：平板式探测器噪声校正方法
公开(公告)号：US07965333B2
公开(公告)日：2011-06-21
申请号：US11092795
申请日：2005-03-29
申请人： Burkhard Groh , Volker Heer , Mathias Hörnig , Bernhard Sandkamp
发明人： Burkhard Groh , Volker Heer , Mathias Hörnig , Bernhard Sandkamp
IPC分类号： H04N9/64
CPC分类号： H04N5/361 , H04N5/32
摘要： For noise correction in connection with a flat-panel x-ray detector (2), noise signals of a dark area (6) are checked for deviations exceeding a specified threshold (g) which, if any are present, will be taken into consideration separately for calculating the correction factor derived from the noise signal. Image artifacts due, for example, to high-contrast objects such as, for instance, cardiac pacemakers or metallic implants, in the x-ray image will be avoided through this measure.
摘要翻译：对于与平板X射线检测器（2）相关的噪声校正，检查暗区域（6）的噪声信号超过规定阈值（g）的偏差，如果有的话，将考虑到分别用于计算从噪声信号导出的校正因子。通过这种措施可以避免由x射线图像造成的像例如心脏起搏器或金属植入物等高对比度物体的图像伪影。

6. 发明申请

US20070016108A1 Method for 3D visualization of vascular inserts in the human body using the C-arm 审中-公开
标题翻译：使用C型臂的人体血管插入物的三维可视化方法
公开(公告)号：US20070016108A1
公开(公告)日：2007-01-18
申请号：US11486697
申请日：2006-07-14
申请人： Estelle Camus , Volker Heer , Markus Lendl
发明人： Estelle Camus , Volker Heer , Markus Lendl
IPC分类号： A61B5/107
CPC分类号： A61B6/12 , A61B6/463 , A61B6/466 , A61B6/481 , A61B6/504 , A61B6/541 , G06T7/33 , G06T7/38 , G06T2207/10081 , G06T2207/10116 , G06T2207/30048 , G06T2207/30052 , G06T2207/30101
摘要： The invention relates to a method for 3D visualization of vascular inserts in the human body using C-arm radiography comprising: firstly recording a contrast-agent-free vessel system having a vascular insert of two series x-ray recordings with different angulations, secondly contrast-agent-based recording the same vessel system of two series x-ray recordings, processing the first two series recordings for improving image quality of the image data sets containing the insert representation, matching the vessel anatomy from the second two series recordings to the insert representation contained in the processed first two series recordings by 2D matching, computing a 3D data set of a region around the insert enclosing the insert as completely as possible based on the processed first two series recordings, computing a 3D data set of the vessel system based on the second two series recordings, and superimposing the two computed 3D data sets based on the 2D matching.
摘要翻译：本发明涉及一种使用C臂射线照相法在人体中对血管插入物进行3D可视化的方法，包括：首先记录具有不同角度的两个串联x射线记录的血管插入物的不含造影剂的血管系统，其次是对比度基于记录的两个系列X射线记录的同一容器系统，处理前两个系列记录，以改善包含插入表示的图像数据集的图像质量，将血管解剖结构与第二个两个系列记录匹配到插入通过2D匹配包含在经处理的前两个系列记录中的表示，基于经处理的前两个系列记录计算尽可能完整地包围插入物的插入物的3D数据集，计算基于容器系统的3D数据集在第二个两个系列记录上，并且基于2D匹配叠加两个计算的3D数据集。

7. 发明申请

US20050219387A1 Method for noise correction for a flat-panel detector 有权
标题翻译：平板式探测器噪声校正方法
公开(公告)号：US20050219387A1
公开(公告)日：2005-10-06
申请号：US11092795
申请日：2005-03-29
申请人： Burkhard Groh , Volker Heer , Mathias Hornig , Bernhard Sandkamp
发明人： Burkhard Groh , Volker Heer , Mathias Hornig , Bernhard Sandkamp
IPC分类号： G01T1/29 , G03B42/02 , H04N5/32 , H04N5/325 , H04N5/361 , H04N5/217
CPC分类号： H04N5/361 , H04N5/32
摘要： For noise correction in connection with a flat-panel x-ray detector (2), noise signals of a dark area (6) are checked for deviations exceeding a specified threshold (g) which, if any are present, will be taken into consideration separately for calculating the correction factor derived from the noise signal. Image artifacts due, for example, to high-contrast objects such as, for instance, cardiac pacemakers or metallic implants, in the x-ray image will be avoided through this measure.
摘要翻译：对于与平板X射线检测器（2）相关的噪声校正，检查暗区域（6）的噪声信号超过规定阈值（g）的偏差，如果有的话，将考虑到分别用于计算从噪声信号导出的校正因子。通过这种措施可以避免由x射线图像造成的像例如心脏起搏器或金属植入物等高对比度物体的图像伪影。

8. 发明申请

US20120128118A1 X-RAY SYSTEM AND METHOD TO GENERATE X-RAY IMAGE DATA 审中-公开
标题翻译： X射线系统和生成X射线图像数据的方法
公开(公告)号：US20120128118A1
公开(公告)日：2012-05-24
申请号：US13302237
申请日：2011-11-22
申请人： Rainer Graumann , Volker Heer
发明人： Rainer Graumann , Volker Heer
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4007 , A61B6/4028 , A61B6/4064 , A61B6/4233 , A61B6/4441 , A61B6/466
摘要： An x-ray system to generate x-ray image data of a predefined volume segment of an examination subject has either an arc-shaped mount or an annular gantry, an x-ray emitter arrangement with multiple x-ray microemitters, an x-ray detector arrangement with multiple x-ray pixels arranged directly adjacent to one another, and a controller to activate the x-ray emitter arrangement and the x-ray detector arrangement. The x-ray emitter arrangement and the x-ray detector are situated opposite one another on the arc-shaped mount or the gantry. The x-ray system is designed for introduction of the examination subject between the x-ray emitter arrangement and the x-ray detector.
摘要翻译：用于产生检查对象的预定体积段的X射线图像数据的X射线系统具有弧形安装件或环形台架，具有多个x射线微量离子的x射线发射器装置，x射线具有彼此直接相邻布置的多个x射线像素的检测器布置，以及用于激活x射线发射器布置和x射线检测器布置的控制器。 x射线发射器布置和x射线检测器在弧形安装座或台架上彼此相对。 x射线系统设计用于在x射线发射器布置和x射线检测器之间引入检查对象。

9. 发明申请

US20110198508A1 Method for Noise Correction for a Flat-Panel Detector 有权
标题翻译：平板式探测器噪声校正方法
公开(公告)号：US20110198508A1
公开(公告)日：2011-08-18
申请号：US13097602
申请日：2011-04-29
申请人： Burkhard Groh , Volker Heer , Mathias Hömig , Bernhard Sandkamp
发明人： Burkhard Groh , Volker Heer , Mathias Hömig , Bernhard Sandkamp
IPC分类号： G01T1/24
CPC分类号： H04N5/361 , H04N5/32
摘要： For noise correction in connection with a flat-panel x-ray detector, noise signals of a dark reference area are checked for deviations exceeding a specified threshold which, if any are present, will be taken into consideration separately for calculating the correction factor derived from the noise signal. Image artifacts due, for example, to high-contrast objects such as, for instance, cardiac pacemakers or metallic implants, in the x-ray image will be avoided through this measure.
摘要翻译：对于与平板X射线检测器相关的噪声校正，检查暗参考区域的噪声信号是否超过规定阈值的偏差，如果有的话，将分别考虑以下因素，以计算从噪声信号。通过这种措施可以避免由x射线图像造成的像例如心脏起搏器或金属植入物等高对比度物体的图像伪影。

10. 发明授权

US06980626B2 X-ray arrangement and operating method for compensating scattered radiation 失效
标题翻译：用于补偿散射辐射的X射线布置和操作方法
公开(公告)号：US06980626B2
公开(公告)日：2005-12-27
申请号：US10621501
申请日：2003-07-17
申请人： Burkhard Groh , Volker Heer , Mathias Hörnig , Bernhard Sandkamp
发明人： Burkhard Groh , Volker Heer , Mathias Hörnig , Bernhard Sandkamp
IPC分类号： A61B6/00 , A61B6/02 , G01N23/201
CPC分类号： A61B6/4441 , A61B6/4014 , A61B6/483 , A61B6/5235 , A61B6/5282
摘要： Method for an x-ray arrangement for compensation of scattered radiation and x-ray apparatusThe invention concerns a method for an x-ray arrangement comprising two x-ray systems (1, 2) for compensation of scattered radiation. In addition, the invention concerns an x-ray apparatus with two x-ray systems (1, 2) which respectively comprise an x-ray source (4, 5) and an x-ray detector (5, 7). An x-ray scattered radiation image based on the x-ray radiation (11) scattered on a subject (P) is acquired for at least one of the two x-ray systems (1, 2), given a definite positioning of the x-ray systems (1, 2) relative to one another. The acquired x-ray scattered radiation image is saved and used for subtraction from an x-ray image acquired with the x-ray system (1, 2) in order to compensate for the influence of the scattered radiation originating from the other x-ray system (1, 2) and to achieve an improved image quality.
摘要翻译：用于补偿散射辐射和x射线装置的X射线装置的方法本发明涉及一种用于补偿散射辐射的两个x射线系统（1,2）的x射线装置的方法。另外，本发明涉及具有分别包括x射线源（4,5）和x射线检测器（5,7））的两个x射线系统（1,2）的X射线设备。对于两个x射线系统（1,2）中的至少一个，获取基于散射在被摄体（P）上的x射线辐射（11）的X射线散射辐射图像，给定x 射线系统（1,2）相对于彼此。所获取的X射线散射辐射图像被保存并用于从由x射线系统（1,2）获取的X射线图像中减去，以便补偿源自其它x射线的散射辐射的影响系统（1，2），并实现了改进的图像质量。

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