-
1.发明公开SCANNING SYSTEM FOR DIFFERENTIAL PHASE CONTRAST IMAGING 有权ÜR UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG
公开(公告)号：EP2509504A1
公开(公告)日：2012-10-17
申请号：EP10807735.5
申请日：2010-12-08
IPC分类号： A61B6/00
CPC分类号： A61B6/00 , A61B6/032 , A61B6/4291 , A61B6/484 , A61B6/488 , A61B6/5241
摘要： The invention relates to the field of X-ray differential phase contrast imaging. For scanning large objects and for an improved contrast to noise ratio, an X-ray device (10) for imaging an object (18) is provided. The X-ray device (10) comprises an X-ray emitter arrangement (12) and an X-ray detector arrangement (14), wherein the X-ray emitter arrangement (14) is adapted to emit an X-ray beam (16) through the object (18) onto the X-ray detector arrangement (14). The X-ray beam (16) is at least partial spatial coherent and fan-shaped. The X-ray detector arrangement (14) comprises a phase grating (50) and an absorber grating (52). The X-ray detector arrangement (14) comprises an area detector (54) for detecting X-rays, wherein the X-ray device is adapted to generate image data from the detected X-rays and to extract phase information from the X-ray image data, the phase information relating to a phase shift of X-rays caused by the object (18). The object (18) has a region of interest (32) which is larger than a detection area of the X-ray detector (18) and the X-ray device (10) is adapted to generate image data of the region of interest (32) by moving the object (18) and the X-ray detector arrangement (14) relative to each other.
摘要翻译： 本发明涉及X射线差分相位成像领域。 为了扫描大型物体并改善与噪音比较的对比度，提供了用于成像对象（18）的X射线装置（10）。 X射线装置（10）包括X射线发射器装置（12）和X射线检测器装置（14），其中X射线发射器装置（14）适于发射X射线束（16） ）通过物体（18）到X射线检测器装置（14）上。 X射线束（16）至少部分空间相干和扇形。 X射线检测器装置（14）包括相位光栅（50）和吸收光栅（52）。 X射线检测器装置（14）包括用于检测X射线的区域检测器（54），其中X射线装置适于从检测到的X射线产生图像数据，并从X射线 图像数据，与由对象（18）引起的X射线的相移相关的相位信息。 物体（18）具有比X射线检测器（18）的检测区域大的感兴趣区域（32），并且X射线装置（10）适于产生感兴趣区域的图像数据 32）通过相对于彼此移动物体（18）和X射线检测器装置（14）。
-
公开(公告)号：EP2442722A1
公开(公告)日：2012-04-25
申请号：EP10728349.1
申请日：2010-06-10
CPC分类号： A61B6/00 , A61B6/4092 , A61B6/4291 , A61B6/484 , G01N23/04 , G21K1/06 , G21K2207/005
摘要： The present invention generally refers to a correction method for grating- based X-ray differential phase contrast imaging (DPCI) as well as to an apparatus which can advantageously be applied in X-ray radiography and tomography for hard X-ray DPCI of a sample object or an anatomical region of interest to be scanned. More precisely, the proposed invention provides a suitable approach that helps to enhance the image quality of an acquired X-ray image which is affected by phase wrapping, e.g. in the resulting Moiré interference pattern of an emitted X-ray beam in the detector plane of a Talbot-Lau type interferometer after diffracting said X-ray beam at a phase-shifting beam splitter grating. This problem, which is further aggravated by noise in the obtained DPCI images, occurs if the phase between two adjacent pixels in the detected X-ray image varies by more than
π radians and is effected by a line integration over the object's local phase gradient,which induces a phase offset error of
π radians that leads to prominent line artifacts parallel to the direction of said line integration.-
公开(公告)号：EP2188783A1
公开(公告)日：2010-05-26
申请号：EP08807600.5
申请日：2008-09-11
发明人： GELLER, Dieter , LEHMANN, Helko
CPC分类号： G06T19/00 , G06T11/003 , G06T15/08
摘要： The invention relates to a system (100) for visualizing an object of interest comprised in a volume of an image dataset, the systemcomprising a path unit (110) for specifying a path in the volume of the image dataset on the basis of the object of interest, a location unit (120) for determining a location on a projection raythrough the volume of the image dataset on the basis of the specified path, and a value unit (130) for computing a projected grayvalue corresponding to the projection rayon the basis of the determined location on the projection ray. Because the locations on the projection rayare determined based on the specified path for indicating the object of interest, the actual computation of the projection grayvalues may be designed and constructed to show gray values describing the object ofinterest while hiding gray values describing other objects, in particular occluding objects. Thus, the system of the invention is arranged for visualizing the object of interest at different viewing angles without occluding the object of interest.
摘要翻译： 本发明涉及一种用于可视化包含在图像数据集的卷中的感兴趣对象的系统（100），该系统包括用于基于对象指定图像数据集的卷中的路径的路径单元（110） 用于基于所述指定路径确定所述图像数据集的体积的投影光线上的位置的位置单元（120），以及用于计算与所述投影光线对应的投影灰度值的值单元（130） 基于投射光线上确定的位置。 由于投影光线上的位置是基于用于指示感兴趣对象的指定路径来确定的，所以投影灰度值的实际计算可以被设计和构造为显示描述感兴趣对象的灰度值，同时隐藏描述其他对象的灰度值 ，特别是闭塞物体。 因此，本发明的系统被安排用于在不遮蔽感兴趣的对象的情况下以不同的视角来可视化感兴趣的对象。
-
4.发明公开MEDICAL INFORMATION SYSTEM WITH REPORT VALIDATOR AND REPORT AUGMENTER 审中-公开有关报表及核数师BERICHTAUGMENTER医疗信息系统
公开(公告)号：EP2483821A1
公开(公告)日：2012-08-08
申请号：EP10754794.5
申请日：2010-08-19
IPC分类号： G06F19/00
摘要： A medical information system (170) comprising a validator (140) configured to validate image findings, which are generated based on an image of anatomical structures produced by an imaging apparatus (110), in a first report with at least one of a set of predefined templates or processed data generated based on the set of predefined templates, and an augmenter (160) configured to augment the first report with information from a second report that includes medical findings.
-
公开(公告)号：EP2027572B1
公开(公告)日：2009-10-21
申请号：EP07735862.0
申请日：2007-05-11
IPC分类号： G09B19/04
摘要： The invention describes a computer-based system that asks (101) a patient to pronounce a word displayed on a monitor, automatically assesses (104, 105) the speech quality, and uses suitable means to feed back (106) any improvement or deterioration of speech quality.
-
6.发明公开ANATOMY-RELATED IMAGE-CONTEXT-DEPENDENT APPLICATIONS FOR EFFICIENT DIAGNOSIS 审中-公开ANATOMIE-BEZOGENE BILDINHALT-ABHÄNGIGEANWENDUNGEN ZUR EFFIZIENTEN DIAGNOSE
公开(公告)号：EP2054829A2
公开(公告)日：2009-05-06
申请号：EP07805327.9
申请日：2007-08-07
发明人： KIEFER, Gundolf , LEHMANN, Helko , GELLER, Dieter , SCHRAMM, Hauke , PETERS, Jochen , ECABERT, Olivier , WEESE, Juergen
IPC分类号： G06F19/00
摘要： The invention relates to a system (100) for obtaining information relating to segmented volumetric medical image data, the system comprising: a display unit (110) for displaying a view of the segmented volumetric medical image data on a display; an indication unit (115) for indicating a location on the displayed view; a trigger unit (120) for triggering an event; an identification unit (125) for identifying a segmented anatomical structure comprised in the segmented volumetric medical image data based on the indicated location on the displayed view in response to the triggered event; and an execution unit (130) for executing an action associated with the identified segmented anatomical structure, thereby obtaining information relating to the segmented volumetric medical image data. The action executed by the execution unit (130) may be displaying a name of the segmented anatomical structure, a short description of the segmented anatomical structure, or a hint on a potential malformation or malfunction of the segmented anatomical structure. Thus, the system (100) allows obtaining valuable information relating to the volumetric medical image data viewed by a physician on the display, thereby assisting the physician in medical diagnosing.
摘要翻译： 本发明涉及一种用于获取与分段体积医学图像数据相关的信息的系统（100），该系统包括：显示单元（110），用于在显示器上显示分割的体积医学图像数据的视图; 用于指示所显示视图上的位置的指示单元（115） 触发单元（120），用于触发事件; 识别单元（125），用于响应于所触发的事件，基于所显示的视图上的指示位置来识别包含在所述分段体积医学图像数据中的分段解剖结构; 以及执行单元（130），用于执行与所识别的分段解剖结构相关联的动作，从而获得与分割的体积医学图像数据相关的信息。 由执行单元（130）执行的动作可以显示分割的解剖结构的名称，分割的解剖结构的简短描述，或对分割的解剖结构的潜在畸形或故障的暗示。 因此，系统（100）允许获得与医生在显示器上观看的体积医学图像数据有关的有价值的信息，从而辅助医师进行医学诊断。
-
7.发明公开APPARATUS FOR PHASE-CONTRAST IMAGING COMPRISING A DISPLACEABLE X-RAY DETECTOR ELEMENT AND METHOD 有权设备技术采用了侧滑射线探测器元件和方法相衬成像
公开(公告)号：EP2509503A1
公开(公告)日：2012-10-17
申请号：EP10807374.3
申请日：2010-12-03
发明人： ROESSL, Ewald , ENGEL, Klaus J. , VOGTMEIER, Gereon , GELLER, Dieter , MARTENS, Gerhard , KOEHLER, Thomas , SCHUSSER, Sebastian, Siegmund
CPC分类号： A61B6/00 , A61B6/032 , A61B6/4021 , A61B6/4092 , A61B6/4291 , A61B6/484
摘要： The present invention relates to X-ray image acquisition technology in general. Employing phase-contrast imaging for X-ray image acquisition may significantly enhance the quality and information content of images acquired. However, phase- contrast information may only be obtainable in a small detector region, possibly being too small for a sufficient field of view for specialized X-ray imaging applications. Accordingly, an apparatus for phase-contrast imaging is provided that may allow the acquisition of an enlarged field of view. According to the present invention an apparatus (1) for phase-contrast imaging is provided, comprising an X-ray source (2), an X-ray detector (12) element having a detector size, a beam splitter grating (8) and an analyzer grating (10). An object (6) is arrangeable between the X-ray source (2) and the X-ray detector (12). The beam splitter grating (8) and the analyzer grating (10) are arrangeable between the X-ray source (2) and the X-ray detector (12). X-ray source (2), the beam splitter grating (8), the analyzer grating (10) and the X-ray detector (12) are operatively coupled such that a phase-contrast image of the object (6) is obtainable. The apparatus (1) is adapted for acquiring a phase-contrast image having a field of view larger than the detector size. The X-ray detector element (12) is displaceable and by the displacement of the X-ray detector (12) a phase-contrast image of the field of view is obtainable.
摘要翻译： 一种X射线图像采集装置用人相衬成像的视场放大包括X射线源到具有检测器尺寸，分束器光栅和上分析器光栅的X射线检测器元件。 一个目的是在X射线源和检测器之间可布置。 分束器光栅和分析器光栅是在X射线源和检测器之间可布置。 的X射线源，所述射束分裂器光栅，所述分析器光栅和X射线检测器可操作地耦合检查没有所述对象的相位对比图像可获得A. 该装置是配置为获取具有的视野比检测器尺寸大的一个领域，相位对比图像。 X射线检测器元件是可移动的，其中，由X射线检测器的位移，所述视场放大的相位对比图像可获得A.
-
公开(公告)号：EP2509487A1
公开(公告)日：2012-10-17
申请号：EP10807737.1
申请日：2010-12-08
IPC分类号： A61B1/00
CPC分类号： A61B6/4291 , A61B6/4092 , A61B6/484 , A61B6/583 , G21K2207/005
摘要： The present invention relates to an X-ray imaging system and a method for differential phase—contrast imaging of an object. To improve calibration of differential phase—contrast imaging systems and the alignment of the gratings an X-ray imaging system is provided that comprises an X-ray emitting arrangement providing at least partially coherent X-ray radiation and an X-ray detection arrangement comprising a phase-shift diffraction grating, a phase analyzer grating, and an X-ray image detector, all arranged along an optical axis. For stepping, the gratings and/or the X-ray emitting arrangement are provided with at least two actuators arranged opposite to each other with reference to the optical axis. For calibration, calibration projections are acquired without an object, wherein, the emitted X-ray radiation or one of the gratings is stepwise displaced with a calibration displacement value. For examination, measurement projections are acquired with an object, wherein the emitted X-ray radiation or one of the gratings is stepwise displaced with a measurement, a calibration projection is associated to each of the measurement projections by registering the latter with the calibration projections.
-
公开(公告)号：EP2188783B1
公开(公告)日：2011-04-13
申请号：EP08807600.5
申请日：2008-09-11
发明人： GELLER, Dieter , LEHMANN, Helko
CPC分类号： G06T19/00 , G06T11/003 , G06T15/08
摘要： The invention relates to a system (100) for visualizing an object of interest comprised in a volume of an image dataset, the systemcomprising a path unit (110) for specifying a path in the volume of the image dataset on the basis of the object of interest, a location unit (120) for determining a location on a projection raythrough the volume of the image dataset on the basis of the specified path, and a value unit (130) for computing a projected grayvalue corresponding to the projection rayon the basis of the determined location on the projection ray. Because the locations on the projection rayare determined based on the specified path for indicating the object of interest, the actual computation of the projection grayvalues may be designed and constructed to show gray values describing the object ofinterest while hiding gray values describing other objects, in particular occluding objects. Thus, the system of the invention is arranged for visualizing the object of interest at different viewing angles without occluding the object of interest.
-
公开(公告)号：EP2509501A1
公开(公告)日：2012-10-17
申请号：EP10798398.3
申请日：2010-12-03
CPC分类号： A61B6/00 , A61B6/4291 , A61B6/4441 , A61B6/484
摘要： X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV, this invention suggests to combine a traditional absorption X-ray-imaging system with large-FOV with an insertable low-cost PCI system with small-FOV, The invention supports the user to direct the PCI system with reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-ray dose exposure for scanning regions not interesting for a radiologist. The PCI scan may be generated on the basis of local tomography.
摘要翻译： 用于相位对比成像（PCI）的X射线设备通常在光栅的帮助下构建。 对于大视野（FOV），这些光栅的生产成本和复杂性可能会因为需要聚焦几何而显着增加。 本发明不是采用具有较大FOV的纯PCI，而是将传统的吸收式X射线成像系统与大型FOV组合在一起，并具有可插入的具有小FOV的低成本PCI系统。本发明支持用户指导PCI 系统将FOV降低到他认为对于进行PCI扫描最有趣的区域，从而消除了对放射科医生不感兴趣的扫描区域的X射线剂量曝光。 PCI扫描可以在局部层析成像的基础上产生。
-
-
-
-
-
-
-
-
-
搜索结果
24 条记录 (耗时 0.016 秒)
