公开(公告)号：US08968194B2

公开(公告)日：2015-03-03

申请号：US12438567

申请日：2007-08-30

申请人： Daniel Fischer ,  Jasmina Ludwig

发明人： Daniel Fischer ,  Jasmina Ludwig

IPC分类号： A61B5/00 ,  A61B6/00 ,  A61M21/00

CPC分类号： A61B6/502 ,  A61M2021/0044 ,  A61M2021/005

摘要： In a method and a medical installation for assisting in a medical measure implemented by a medical device, a lighting element generates light that uniformly illuminates the medical device or its environment, the illumination being designed to reduce stress on the part of a patient undergoing the medical measure.

摘要翻译： 在用于辅助由医疗装置实施的医疗措施的方法和医疗设备中，照明元件产生均匀地照亮医疗装置或其环境的光，该照明被设计成减少经历医疗的患者的部分的压力 测量。

公开(公告)号：US20090207969A1

公开(公告)日：2009-08-20

申请号：US12369238

申请日：2009-02-11

申请人： Daniel Fischer ,  Jasmina Ludwig

发明人： Daniel Fischer ,  Jasmina Ludwig

IPC分类号： A61B6/04

CPC分类号： G06T11/006 ,  A61B6/502 ,  G06T11/005

摘要： To generate a tomosynthetic 3D x-ray image composed of a number of slice images, a tomosynthetic 3D intermediate image composed of a number of slice images is reconstructed from 2D projection images that have not been noise-filtered. The microcalcium regions contained in these slice images are segmented, and one or more subject slice images relevant to these microcalcium voxels are determined for each microcalcium region. The microcalcium voxels belonging to the segmented microcalcium region in this subject slice image or in these subject slice images are projected forwards in the 2D projection images, and the microcalcium pixels associated with these microcalcium voxels are marked in the 2D projection images. Noise-filtered 2D projection images are subsequently generated by subjecting the microcalcium pixels of the 2D projection images to no noise filtering or a noise filtering that leads to a noise reduction reduced relative to the remaining image regions. The tomosynthetic 3D x-ray image is then calculated from the 2D projection images that have been noise-filtered in this manner.

摘要翻译： 为了生成由多个切片图像构成的断层合成3D X射线图像，从未经噪声滤波的2D投影图像重建由多个切片图像构成的断层合成3D中间图像。 分割包含在这些切片图像中的微钙斑区域，并且为每个微钙矿区域确定与这些微钙体素相关的一个或多个受试切片图像。 属于本科切片图像中的分段微钙钙斑区域的微钙钙素体，或者在这些主题切片图像中，在2D投影图像中向前投影，并且在2D投影图像中标记与这些微钙体素相关联的微钙像素。 随后通过对2D投影图像的微钙像素进行噪声滤波或相对于剩余图像区域降低噪声的噪声滤波来产生经噪声滤波的2D投影图像。 然后从以这种方式进行噪声滤波的2D投影图像中计算断层合成3D X射线图像。

公开(公告)号：US20100232673A1

公开(公告)日：2010-09-16

申请号：US12706894

申请日：2010-02-17

申请人： Benjamin Keck ,  Markus Kowarschik ,  Jasmina Ludwig ,  Thomas Mertelmeier ,  Holger Scherl

发明人： Benjamin Keck ,  Markus Kowarschik ,  Jasmina Ludwig ,  Thomas Mertelmeier ,  Holger Scherl

IPC分类号： G06K9/00 ,  A61B6/03

CPC分类号： A61B6/502 ,  G06T5/003 ,  G06T5/50 ,  G06T2207/10081 ,  G06T2207/30068

摘要： An improvement in image quality when determining an image using iterative reconstruction is provided by taking account of focus shifts. In order to take into consideration the influence of focus shift in calculated projections, several different projections are calculated for each section of the focus path on a section-by-section basis. The several different calculated projections for a section are averaged for comparison with a projection recorded in the section. Improved image quality is provided, for example, in tomosynthesis applications in which a large number of recordings are made with a stationary detector.

摘要翻译： 通过考虑焦点偏移来提供使用迭代重建确定图像时图像质量的改善。 为了考虑到计算投影中的焦点偏移的影响，对于每个焦点路径的每一个部分，逐个部分地计算出几个不同的投影。 对于部分的几个不同的计算投影进行平均，以与该部分中记录的投影进行比较。 提供了改进的图像质量，例如在其中使用固定式检测器进行大量记录的断层合成应用中。

公开(公告)号：US20100183119A1

公开(公告)日：2010-07-22

申请号：US12664942

申请日：2008-09-02

申请人： Jasmina Ludwig ,  Thomas Mertelmeier

发明人： Jasmina Ludwig ,  Thomas Mertelmeier

IPC分类号： A61B6/10

CPC分类号： A61B6/107 ,  A61B6/025 ,  A61B6/502

摘要： A radiography diagnostic apparatus has a radiation source that emits an x-ray beam, and a protection that is mounted to prevent unwanted body portions of a patient, or operating personnel, from interacting with the x-ray beam.

摘要翻译： 射线照相诊断装置具有发射X射线束的辐射源，以及安装以防止患者或操作人员的不必要身体部分与X射线束相互作用的保护。

公开(公告)号：US08363050B2

公开(公告)日：2013-01-29

申请号：US12300404

申请日：2007-02-08

申请人： Jasmina Ludwig ,  Thomas Mertelmeier

发明人： Jasmina Ludwig ,  Thomas Mertelmeier

IPC分类号： G06T15/00

CPC分类号： A61B6/502 ,  A61B6/025 ,  A61B6/4233 ,  A61B6/466 ,  A61B6/469

摘要： In a method and device for generating a tomosynthetic 3D x-ray image, a number of digital x-ray images of an examination subject are acquired at respectively different projection angles, within a limited angle range, using an x-ray source and a digital x-ray detector. At an initial position for a selected projection angle, a spatially-fixed reference point is projected onto a partial region of the acquisition surface of the x-ray detector. For each further projection angle, a corresponding partial region on the acquisition surface is automatically determined. The tomosynthetic 3D image is reconstruction exclusively using image data from the respective partial regions.

摘要翻译： 在用于产生断层合成3D X射线图像的方法和装置中，使用X射线源和数字X射线源在受限角度范围内以分别不同的投影角度获取检查对象的多个数字X射线图像 x射线探测器。 在用于所选择的投影角度的初始位置处，将空间固定的参考点投影到x射线检测器的获取表面的部分区域上。 对于每个另外的投影角度，自动确定采集表面上的相应部分区域。 断层合成3D图像是仅使用来自各个部分区域的图像数据的重建。

公开(公告)号：US07835491B2

公开(公告)日：2010-11-16

申请号：US12369238

申请日：2009-02-11

申请人： Daniel Fischer ,  Jasmina Ludwig

发明人： Daniel Fischer ,  Jasmina Ludwig

IPC分类号： A61B6/04

CPC分类号： G06T11/006 ,  A61B6/502 ,  G06T11/005

摘要： To generate a tomosynthetic 3D x-ray image composed of a number of slice images, a tomosynthetic 3D intermediate image composed of a number of slice images is reconstructed from 2D projection images that have not been noise-filtered. The microcalcium regions contained in these slice images are segmented, and one or more subject slice images relevant to these microcalcium voxels are determined for each microcalcium region. The microcalcium voxels belonging to the segmented microcalcium region in this subject slice image or in these subject slice images are projected forwards in the 2D projection images, and the microcalcium pixels associated with these microcalcium voxels are marked in the 2D projection images. Noise-filtered 2D projection images are subsequently generated by subjecting the microcalcium pixels of the 2D projection images to no noise filtering or a noise filtering that leads to a noise reduction reduced relative to the remaining image regions. The tomosynthetic 3D x-ray image is then calculated from the 2D projection images that have been noise-filtered in this manner.

摘要翻译： 为了生成由多个切片图像构成的断层合成3D X射线图像，从未经噪声滤波的2D投影图像重建由多个切片图像构成的断层合成3D中间图像。 分割包含在这些切片图像中的微钙斑区域，并且为每个微钙矿区域确定与这些微钙体素相关的一个或多个受试切片图像。 属于本科切片图像中的分段微钙钙斑区域的微钙钙素体，或者在这些主题切片图像中，在2D投影图像中向前投影，并且在2D投影图像中标记与这些微钙体素相关联的微钙像素。 随后通过对2D投影图像的微钙像素进行噪声滤波或相对于剩余图像区域降低噪声的噪声滤波来产生经噪声滤波的2D投影图像。 然后从以这种方式进行噪声滤波的2D投影图像中计算断层合成3D X射线图像。

公开(公告)号：US20100091940A1

公开(公告)日：2010-04-15

申请号：US12573986

申请日：2009-10-06

申请人： Jasmina Ludwig ,  Thomas Mertelmeier

发明人： Jasmina Ludwig ,  Thomas Mertelmeier

IPC分类号： H05G1/60

CPC分类号： A61B6/466 ,  A61B6/025 ,  A61B6/06 ,  A61B6/4028 ,  A61B6/502 ,  H05G1/70

摘要： A tomosynthesis apparatus has an x-ray source that generates an x-ray beam emanating from a focus, which is received by a flat panel detector. To set a tomosynthesis angle, the position of the central axis of the x-ray beam of the x-ray source is variable. A collimator diaphragm has a diaphragm aperture that limits the expansion of the x-ray beam at the location of the flat panel detector. The collimator diaphragm is arranged in the beam path between the focus and the flat panel detector. The shape and size of the diaphragm aperture are dynamically varied (adjusted) dependent on the changing tomosynthesis angle, such that the expansion of the x-ray beam at the location of the flat panel detector always essentially corresponds to the detector dimensions.

摘要翻译： 断层合成装置具有产生由平板检测器接收的焦点发出的X射线束的X射线源。 为了设置断层合成角度，x射线源的x射线束的中心轴的位置是可变的。 准直器膜片具有光阑孔径，其限制了在平板检测器的位置处的X射线束的扩张。 准直膜被布置在焦点和平板检测器之间的光束路径中。 膜片孔径的形状和尺寸取决于变化的层析合成角度而动态变化（调节），使得在平板检测器的位置处的X射线束的扩展总是基本上对应于检测器尺寸。

公开(公告)号：US20100007659A1

公开(公告)日：2010-01-14

申请号：US12300404

申请日：2007-02-08

申请人： Jasmina Ludwig ,  Thomas Mertelmeier

发明人： Jasmina Ludwig ,  Thomas Mertelmeier

IPC分类号： G06T15/00

CPC分类号： A61B6/502 ,  A61B6/025 ,  A61B6/4233 ,  A61B6/466 ,  A61B6/469

摘要： In a method and device for generating a tomosynthetic 3D x-ray image, a number of digital x-ray images of an examination subject are acquired at respectively different projection angles, within a limited angle range, using an x-ray source and a digital x-ray detector. At an initial position for a selected projection angle, a spatially-fixed reference point is projected onto a partial region of the acquisition surface of the x-ray detector. For each further projection angle, a corresponding partial region on the acquisition surface is automatically determined. The tomosynthetic 3D image is reconstruction exclusively using image data from the respective partial regions.

摘要翻译： 在用于产生断层合成3D X射线图像的方法和装置中，使用X射线源和数字X射线源在受限角度范围内以分别不同的投影角度获取检查对象的多个数字X射线图像 x射线探测器。 在用于所选择的投影角度的初始位置处，将空间固定的参考点投影到x射线检测器的获取表面的部分区域上。 对于每个另外的投影角度，自动确定采集表面上的相应部分区域。 断层合成3D图像是仅使用来自各个部分区域的图像数据的重建。

公开(公告)号：US08411923B2

公开(公告)日：2013-04-02

申请号：US12483416

申请日：2009-06-12

申请人： Jasmina Ludwig ,  Thomas Mertelmeier

发明人： Jasmina Ludwig ,  Thomas Mertelmeier

IPC分类号： G06K9/00

CPC分类号： G06T11/006 ,  A61B6/502 ,  G06T2211/436

摘要： In a tomographical image reconstruction method and apparatus to generate an image of an examination subject from a number of digital projection data acquired at different projection angles, a first analytical filter kernel (formed by a first analytical function) is determined for a filtered back projection in the spatial frequency range, this first analytical filter kernel approximating, at least in a range of the spatial frequency, a discrete filter kernel iteratively determined for a model. Back projection is implemented with a second analytical filter kernel calculated from the analytical filter kernel and formed by a second analytical function.

摘要翻译： 在从不同投影角度获取的多个数字投影数据生成检查对象的图像的断层图像重建方法和装置中，确定第一分析滤波器核（由第一分析函数形成），用于滤波反投影 空间频率范围，该第一分析滤波器核心至少在空间频率的范围内逼近为模型迭代确定的离散滤波器核。 使用由分析滤波器核计算并由第二分析函数形成的第二个分析滤波器核实现背投影。

公开(公告)号：US08031834B2

公开(公告)日：2011-10-04

申请号：US12573986

申请日：2009-10-06

申请人： Jasmina Ludwig ,  Thomas Mertelmeier

发明人： Jasmina Ludwig ,  Thomas Mertelmeier

IPC分类号： G01N23/00

CPC分类号： A61B6/466 ,  A61B6/025 ,  A61B6/06 ,  A61B6/4028 ,  A61B6/502 ,  H05G1/70

摘要： A tomosynthesis apparatus has an x-ray source that generates an x-ray beam emanating from a focus, which is received by a flat panel detector. To set a tomosynthesis angle, the position of the central axis of the x-ray beam of the x-ray source is variable. A collimator diaphragm has a diaphragm aperture that limits the expansion of the x-ray beam at the location of the flat panel detector. The collimator diaphragm is arranged in the beam path between the focus and the flat panel detector. The shape and size of the diaphragm aperture are dynamically varied (adjusted) dependent on the changing tomosynthesis angle, such that the expansion of the x-ray beam at the location of the flat panel detector always essentially corresponds to the detector dimensions.

摘要翻译： 断层合成装置具有产生由平板检测器接收的焦点发出的X射线束的X射线源。 为了设置断层合成角度，x射线源的x射线束的中心轴的位置是可变的。 准直器膜片具有光阑孔径，其限制了在平板检测器的位置处的X射线束的扩张。 准直膜被布置在焦点和平板检测器之间的光束路径中。 膜片孔径的形状和尺寸取决于变化的层析合成角度而动态变化（调节），使得在平板检测器的位置处的X射线束的扩展总是基本上对应于检测器尺寸。