公开(公告)号：US08908826B2

公开(公告)日：2014-12-09

申请号：US13586073

申请日：2012-08-15

申请人： Philipp Bernhardt ,  Martin Spahn

发明人： Philipp Bernhardt ,  Martin Spahn

IPC分类号： A61B6/02 ,  A61B6/00 ,  H01J35/30

CPC分类号： A61B6/022 ,  A61B6/4007 ,  A61B6/4208 ,  A61B6/4441 ,  A61B6/486 ,  A61B6/50 ,  A61B6/504 ,  A61B6/542 ,  A61B6/545 ,  G01N2223/414 ,  H01J35/305

摘要： A method for stereoscopic x-ray imaging by a stereoscopic x-ray tube and by an x-ray radiation detector is provided. The x-ray radiation detector has a buffer. The stereoscopic x-ray tube has two x-ray beam sources disposed a short distance from one another. 2D image datasets are acquired at relatively short intervals one after the other, which have good quality.

摘要翻译： 提供了一种通过立体X射线管和X射线检测器进行立体X射线成像的方法。 x射线辐射检测器具有缓冲器。 立体X射线管具有彼此相距很短距离的两个x射线束源。 以相对较短的间隔一个接一个地获取2D图像数据，其质量好。

公开(公告)号：US20140270073A1

公开(公告)日：2014-09-18

申请号：US14204036

申请日：2014-03-11

申请人： Martin Spahn

发明人： Martin Spahn

IPC分类号： G01N23/04

CPC分类号： G01N23/04 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/542 ,  A61B6/585

摘要： A method acquires an X-ray image via a counting digital X-ray detector of an X-ray system. The X-ray detector has an X-ray converter for converting X-ray radiation into an electrical signal and a matrix having a plurality of counting pixel elements. At least one variable threshold value is applied for each pixel element such that an incoming signal is counted by a memory unit in each instance that the incoming signal exceeds the threshold value. The method includes receiving a request to acquire one or more X-ray images, automatically determining one or more threshold values individually adjusted to the X-ray image(s), setting the threshold values in the X-ray detector, applying X-ray radiation while the threshold values are applied, converting X-ray quanta into count signals, storing the count signals in the X-ray detector, outputting image data representing the X-ray image from the X-ray detector, and displaying or storing the X-image.

摘要翻译： 方法通过X射线系统的计数数字X射线检测器取得X射线图像。 X射线检测器具有用于将X射线辐射转换为电信号的X射线转换器和具有多个计数像素元件的矩阵。 每个像素元件应用至少一个可变阈值，使得输入信号在输入信号超过阈值的情况下由存储器单元进行计数。 该方法包括接收获取一个或多个X射线图像的请求，自动确定单独调整到X射线图像的一个或多个阈值，设置X射线检测器中的阈值，应用X射线 辐射，同时施加阈值，将X射线量子转换成计数信号，将计数信号存储在X射线检测器中，从X射线检测器输出表示X射线图像的图像数据，以及显示或存储X -图片。

公开(公告)号：US20140185781A1

公开(公告)日：2014-07-03

申请号：US14146564

申请日：2014-01-02

申请人： Silke Reitz ,  Martin Spahn

发明人： Silke Reitz ,  Martin Spahn

IPC分类号： G01T7/00

CPC分类号： G01T7/005 ,  G01T1/247

摘要： A method for calibrating a counting digital X-ray detector includes performing a threshold value scan in at least one defined X-ray spectrum for irradiating the X-ray detector, which includes a matrix composed of pixel elements, storing count rates of the pixel elements as a function of respective applied threshold values, and from results of a measurement of count rates of the pixel elements, determining or calculating individual correction threshold values for the individual pixel elements. The individual correction threshold values correct a threshold value that is to be applied to the pixel elements for the defined X-ray spectrum such that threshold value noise is reduced.

摘要翻译： 用于校准计数数字X射线检测器的方法包括在至少一个定义的X射线光谱中执行阈值扫描以照射包括由像素元素组成的矩阵的X射线检测器，存储像素元件的计数率 作为各个施加的阈值的函数，以及从像素元件的计数率的测量结果，确定或计算各个像素元件的各个校正阈值。 各个校正阈值校正要应用于所定义的X射线谱的像素元素的阈值，使得阈值噪声降低。

公开(公告)号：US20140103219A1

公开(公告)日：2014-04-17

申请号：US14124713

申请日：2012-05-21

申请人： Harry Hedler ,  Timothy Hughes ,  Martin Spahn ,  Stefan Wirth

发明人： Harry Hedler ,  Timothy Hughes ,  Martin Spahn ,  Stefan Wirth

IPC分类号： G01T1/20

CPC分类号： G01T1/2006 ,  G01T1/20 ,  G01T1/28

摘要： The invention relates to a radiation detector (100; 101; 102; 103; 104; 105; 106), having a scintillator (120) for generating electromagnetic radiation (202) in response to the action of incident radiation (200). The scintillator (120) has two opposing end faces (121; 122) and a lateral wall (123) between the end faces (121; 122). The radiation detector has, in addition, a photocathode section (130) that is located on the lateral wall (123) of the scintillator (120) and that generates electrons (204) in response to the action of electromagnetic radiation (202) that is generated by the scintillator (120), a microchannel plate (161; 162) comprising a plurality of channels (165), for multiplying the electrons (204) that have been generated by the photocathode section (130) and a detection system (171; 172) for detecting the electrons (204) that have been multiplied by means of the microchannel plate (161; 162). The invention also relates to an imaging system (110) comprising a radiation detector of this type (100; 101; 102; 103; 104; 105; 106).

摘要翻译： 本发明涉及一种辐射检测器（100; 101; 102; 103; 104; 105; 106），其具有响应于入射辐射（200）的作用产生电磁辐射（202）的闪烁体（120）。 闪烁体（120）在端面（121; 122）之间具有两个相对的端面（121; 122）和侧壁（123）。 另外，放射线检测器还具有位于闪烁体（120）的侧壁（123）上并且响应于电磁辐射（202）的作用产生电子（204）的光电阴极部分（130） 由所述闪烁体（120）产生的微通道板（161; 162）包括多个通道（165），用于将由所述光电阴极部分（130）产生的电子（204）与检测系统（171; 172），用于检测已经通过微通道板（161; 162）倍增的电子（204）。 本发明还涉及一种包括这种类型的辐射探测器（100; 101; 102; 103; 104; 105; 106）的成像系统（110）。

公开(公告)号：US08437526B2

公开(公告)日：2013-05-07

申请号：US12244294

申请日：2008-10-02

申请人： Martin Spahn

发明人： Martin Spahn

IPC分类号： G06K9/36 ,  G06K9/00 ,  H05G1/64

CPC分类号： A61B6/5205 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/503 ,  G06F19/00

摘要： A system locally allocates relatively higher and lower spatial resolution areas of a medical X-ray image in response to image spatial resolution requirements of individual sections of a partitioned image. A system processes image data by adaptively varying pixel resolution within a 2D (two Dimensional) X-ray medical image. The system includes an imaging detector comprising a matrix array of detection picture elements having a detector pixel resolution for detecting X-rays passed through patient anatomy. An image data processor determines a first area within a 2D image to be allocated a first pixel resolution and a second area within the 2D image to be allocated a second pixel resolution lower than the first resolution. A combinational processor combines image data of multiple adjacent detection picture elements to provide an individual pixel of the second pixel resolution. A user interface generates data representing a 2D X-ray medical image including the first area having the first pixel resolution and the second area having the second pixel resolution lower than the first resolution.

摘要翻译： 响应于分割图像的各个部分的图像空间分辨率要求，系统本地分配医疗X射线图像的相对较高和较低的空间分辨率区域。 系统通过在2D（二维）X射线医学图像内自适应地改变像素分辨率来处理图像数据。 该系统包括成像检测器，其包括具有用于检测通过患者解剖结构的X射线的检测器像素分辨率的检测图像元件的矩阵阵列。 图像数据处理器确定要分配2D图像中的第一像素分辨率的第一区域和2D图像内的第二区域以分配低于第一分辨率的第二像素分辨率。 组合处理器组合多个相邻检测图像元素的图像数据以提供第二像素分辨率的单个像素。 用户界面产生表示包括具有第一像素分辨率的第一区域和具有比第一分辨率低的第二像素分辨率的第二区域的2D X射线医学图像的数据。

公开(公告)号：US20130028382A1

公开(公告)日：2013-01-31

申请号：US13562236

申请日：2012-07-30

申请人： Martin Spahn

发明人： Martin Spahn

IPC分类号： G01N23/04 ,  G01T1/16

CPC分类号： G01T1/172 ,  G01N23/04 ,  G01T1/2018 ,  G01T1/247 ,  G01T1/2928 ,  H04N5/32

摘要： With the aid of discriminators on a picture element of an X-ray detector, digital outputs are generated that indicate energy intervals to which X-ray quanta are allocated. If this occurs for adjacent picture elements, a distinction may be made between true coincidences, in which k-fluorescence photons play a part, and random coincidences in which two primary quanta randomly strike adjacent picture elements. The energy of the primary quantum may also be at least roughly reconstructed in the case of true coincidences. An energy-triggering measurement may thereby be provided to the extent that different materials of a picture object should be distinguished.

摘要翻译： 借助于X射线检测器的像素上的鉴别器，产生指示分配X射线量子的能量间隔的数字输出。 如果对于相邻的图像元素发生这种情况，则可以区分其中k个荧光光子起作用的真实重合，以及两个主要量子随机冲击相邻图像元素的随机重合。 在真实重合的情况下，主量子的能量也可以至少大致重构。 因此，可以提供能够触发测量，使得可以区分图片对象的不同材料。

公开(公告)号：US20120314839A1

公开(公告)日：2012-12-13

申请号：US13493658

申请日：2012-06-11

申请人： Philipp Bernhardt ,  Martin Spahn

发明人： Philipp Bernhardt ,  Martin Spahn

IPC分类号： G01N23/04

CPC分类号： A61B6/405 ,  A61B6/4233 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/504 ,  A61B6/5235

摘要： A buffer on detector elements of an X-ray radiation detector can be used, when acquiring a number of 2D X-ray image data records with the aid of an X-ray angiography system, to acquire 2D image data records at a relatively short interval one after the other with the aid of different X-ray spectra, to allow dual-energy imaging, which may be of particularly good quality.

摘要翻译： 当借助X射线血管造影系统获取多个2D X射线图像数据记录时，可以使用X射线辐射检测器的检测器元件上的缓冲器以相对短的间隔获取2D图像数据记录 借助不同的X射线光谱，一个接一个地进行双能量成像，这可能是特别好的质量。

公开(公告)号：US20120223239A1

公开(公告)日：2012-09-06

申请号：US13408406

申请日：2012-02-29

申请人： Philipp Bernhardt ,  Martin Spahn

发明人： Philipp Bernhardt ,  Martin Spahn

IPC分类号： G01T1/20

CPC分类号： G21K4/00 ,  G01T1/2018

摘要： A radiation detector, in particular an X-ray radiation detector, in the form of a flat-panel detector, may comprise a scintillator layer applied to a substrate and comprising elongated needles made from a scintillator material forming the scintillator layer, and an actively readable pixel array composed of photodiodes, wherein the thickness of the scintillator layer may be in the range of 900 μm-2500 μm, and wherein the angle at which the needles stand relative to the pixel array, starting from 90° in the center of the detector, may decrease with increasing distance from the center of the detector.

摘要翻译： 具有平板检测器形式的放射线检测器，特别是X射线辐射检测器可以包括施加到衬底上的闪烁体层，并且包括由形成闪烁体层的闪烁体材料制成的细针，以及主动读取 由光电二极管组成的像素阵列，其中闪烁体层的厚度可以在900μm-2500μm的范围内，并且其中针相对于像素阵列的角度从检测器的中心起90°开始 ，可能随着离检测器中心距离的增加而减小。

公开(公告)号：US07881555B2

公开(公告)日：2011-02-01

申请号：US11580368

申请日：2006-10-13

申请人： Martin Spahn

发明人： Martin Spahn

IPC分类号： G06K9/40 ,  G06K9/00 ,  G09G1/14 ,  H04N1/40

CPC分类号： G06T5/40 ,  G06T5/008 ,  G06T2207/10116

摘要： A system and method to reduce bright burn in images, such as x-ray images. The reduction of bright burn may be accomplished by processing a received raw image to obtain a grey-value histogram. The raw image may be divided into a plurality of regions of interest, and an average signal of each region of interest is calculated. Regions of interest are identified as bright burn candidates based on a predetermined function of the average signal of each region of interest and the grey-value histogram of the entire raw image. The regions of interest may be analyzed for local connectivity to estimate bright burn areas. An image with reduced bright burn is generated by either automatically adjusting a physical wedge filter position based on the bright burn areas, or by adaptively reducing a signal level of the bright burn areas.

摘要翻译： 减少图像中亮度灼伤的系统和方法，如x射线图像。 亮燃烧的减少可以通过处理接收的原始图像来获得灰值直方图来实现。 原始图像可以被划分为多个感兴趣区域，并且计算每个感兴趣区域的平均信号。 基于每个感兴趣区域的平均信号的预定函数和整个原始图像的灰度值直方图，将感兴趣区域识别为亮灼伤候选。 可以分析感兴趣的区域以进​​行本地连接以估计明亮的燃烧区域。 通过自动调整基于明亮的燃烧区域的物理楔形过滤器位置，或者通过自适应地降低明亮的燃烧区域的信号水平来产生具有减少的明亮的燃烧的图像。

公开(公告)号：US20110019800A1

公开(公告)日：2011-01-27

申请号：US12839671

申请日：2010-07-20

申请人： Martin Spahn

发明人： Martin Spahn

IPC分类号： H05G1/64

CPC分类号： A61B6/4233 ,  A61B6/4405 ,  A61B6/56 ,  A61B6/563 ,  A61B2560/0219

摘要： An X-ray detector (10) for recording digital X-ray images, has a mobile design, with an energy supply unit (14) that has at least one chargeable high-power capacitor (15).

摘要翻译： 用于记录数字X射线图像的X射线检测器（10）具有移动设计，具有至少一个可充电的高功率电容器（15）的能量供应单元（14）。