公开(公告)号：US06219405B1

公开(公告)日：2001-04-17

申请号：US09012969

申请日：1998-01-26

申请人： Hitoshi Inoue

发明人： Hitoshi Inoue

IPC分类号： H05G108

CPC分类号： H04N5/3572 ,  H04N5/32 ,  H04N5/3651

摘要： An image sensing apparatus using a solid state image sensor has the capability of correcting an image signal including an intensity variation due to the variation in the intensity of a radiation from a radiation source and also including an intensity variation due to the variation in conversion efficiency of photoelectric conversion elements in such a manner that only the variation in conversion efficiency is corrected thereby suppressing an artifact which would occur in conventional apparatus. A shading distribution (distribution data) is measured by sensing an X-ray through no object to be examined or through an object whose transmittance to the X-ray is well known. The component of the X-ray intensity distribution is separated from the obtained shading distribution data thereby obtaining a pixel-to-pixel variation in conversion efficiency of the solid state image sensor. The image signal is corrected based on the pixel-to-pixel variation in conversion efficiency obtained.

摘要翻译： 使用固态图像传感器的图像感测装置具有校正包括由于辐射源的辐射强度的变化引起的强度变化的图像信号的能力，并且还包括由于转换效率的变化引起的强度变化 光电转换元件以仅改变转换效率的方式被校正，从而抑制了传统装置中会发生的伪像。 通过感测不需要检查的物体的X射线或通过对X射线的透射率是众所周知的物体来测量阴影分布（分布数据）。 从所获得的阴影分布数据中分离X射线强度分布的分量，从而获得固态图像传感器的转换效率的像素到像素变化。 基于获得的转换效率的像素到像素的变化来校正图像信号。

公开(公告)号：US06590957B1

公开(公告)日：2003-07-08

申请号：US10099343

申请日：2002-03-13

申请人： William K. Warburton ,  Michael Momayezi ,  Peter M. Grudberg ,  Jackson T. Harris

发明人： William K. Warburton ,  Michael Momayezi ,  Peter M. Grudberg ,  Jackson T. Harris

IPC分类号： H05G108

CPC分类号： A61B6/4241 ,  G01T1/171

摘要： For pulse processing spectrometers that use a fast channel to detect input pulses, a slow channel to measure the pulses' energies, pileup inspection circuitry pulses, and binning to produce an output spectrum of captured energy values, the correction technique extends the Harms method to produce an estimate of the average ratio of the number of input pulses detected in the fast channel per non-piled-up pulse whose captured energy value is to be binned into the output spectrum and, for each such non-piled-up pulse, adding the value to the corrected output spectrum in the bin dictated by the captured energy value. The uncorrected spectrum is formed in the traditional manner by simply adding 1 to the equivalent bin. Three techniques are disclosed for producing the estimate , a running average, a bucket averaging, and a circular buffer method.

摘要翻译： 对于使用快速通道来检测输入脉冲的脉冲处理光谱仪，测量脉冲能量的缓慢通道，堆积检查电路脉冲和合并以产生捕获的能量值的输出光谱，校正技术扩展了Harms方法以产生 在捕获能量值被分组到输出频谱中的每个非堆叠脉冲的快速信道中检测到的输入脉冲数的平均比率的估计值，并且对于每个这样的非堆积脉冲 将值添加到由捕获的能量值指定的bin中的校正输出光谱。 未经校正的频谱以传统方式形成，只需将1加到等效的文件夹中即可。 公开了用于产生估计值C，运行平均值，桶平均值和循环缓冲方法的三种技术。

公开(公告)号：US06343111B1

公开(公告)日：2002-01-29

申请号：US09657033

申请日：2000-09-07

申请人： Gopal B. Avinash ,  Jianguo Zhao ,  Francois Serge Nicolas ,  Kenneth Scott Kump

发明人： Gopal B. Avinash ,  Jianguo Zhao ,  Francois Serge Nicolas ,  Kenneth Scott Kump

IPC分类号： H05G108

CPC分类号： A61B6/482 ,  G06T5/50 ,  H04N5/3205 ,  H04N5/325

摘要： A method for determining a suggested value for a cancellation parameter for a dual energy decomposition includes obtaining a first energy level image of internal structure, obtaining a second, lower, energy level image of the internal structure, and iteratively processing the images to determine a provisional value for the cancellation parameter. The iteration includes varying a cancellation parameter in a cancellation equation, obtaining a structure cancelled image from the first and second energy level images according to the cancellation equation, and evaluating a cancellation metric from the structure cancelled image. The provisional cancellation parameter may then be chosen (e.g., as the value that approximately minimizes a variance cancellation metric). Further iterations may be performed around the provisional cancellation parameter to refine the provisional cancellation parameter into a final cancellation parameter.

摘要翻译： 用于确定用于双能量分解的消除参数的建议值的方法包括获得内部结构的第一能级图像，获得内部结构的第二，较低能级图像，并且迭代地处理图像以确定临时 取消参数的值。 迭代包括在消除方程中改变消除参数，根据消除方程从第一和第二能级图像获得结构抵消图像，以及从结构取消图像评估消除度量。 然后可以选择临时取消参数（例如，作为大致最小化方差消除度量的值）。 可以围绕临时取消参数执行进一步迭代，以将临时取消参数细化为最终取消参数。

公开(公告)号：US06621890B1

公开(公告)日：2003-09-16

申请号：US09831809

申请日：2001-05-11

申请人： Christian Rondeux

发明人： Christian Rondeux

IPC分类号： H05G108

CPC分类号： H05G1/30 ,  G08C19/28

摘要： The invention concerns a method for controlling an ionizing radiation generator (2) which consists in setting up a connection by radio relay channel between the generator and the control device (1). The invention is characterised in that said connection consists in transmitting a code specific to the generator and a code for connecting it to the control device and in communicating the two codes at each connection between said generator and said control device. The invention also concerns the installation for implementing said method.

摘要翻译： 本发明涉及一种用于控制电离辐射发生器（2）的方法，其包括通过发电机和控制装置（1）之间的无线电中继通道建立连接。 本发明的特征在于，所述连接在于发送特定于发生器的代码和用于将其连接到控制设备的代码以及在所述发生器和所述控制设备之间的每个连接处传达两个代码。 本发明还涉及用于实现所述方法的安装。

公开(公告)号：US06351517B1

公开(公告)日：2002-02-26

申请号：US09575699

申请日：2000-07-07

申请人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Allan John Connolly ,  Harry Kirk Mathews, Jr.

发明人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Allan John Connolly ,  Harry Kirk Mathews, Jr.

IPC分类号： H05G108

CPC分类号： H05G1/08 ,  G06F19/00 ,  H05G1/54

摘要： In predicting failure of an x-ray tube in a computed tomography (CT) system, reference detector elements normally disposed on each end of the detector, receive x-rays directly from the x-ray tube. In accordance with the invention, the output values of the reference detector elements are utilized by a tube condition prediction algorithm to predict a failure in the x-ray tube of the CT system. The tube condition prediction algorithm utilizes at least one model of the CT system and at least one prediction routine, which typically is a Kalman filter, to generate the prediction. The prediction routine uses the model to analyze the output values of the reference detector elements in order to determine the condition of the x-ray tube and predict future performance of the x-ray tube.

摘要翻译： 在计算机断层摄影（CT）系统中预测X射线管的故障时，通常设置在检测器每端的参考探测器元件直接从X射线管接收X射线。 根据本发明，通过管状态预测算法利用参考检测器元件的输出值来预测CT系统的X射线管的故障。 管条件预测算法利用至少一个CT系统模型和通常是卡尔曼滤波器的至少一个预测程序来产生预测。 预测程序使用该模型来分析参考检测器元件的输出值，以便确定x射线管的状况并预测x射线管的未来性能。

公开(公告)号：US06198799B1

公开(公告)日：2001-03-06

申请号：US09237147

申请日：1999-01-25

申请人： Koji Ono ,  Kouji Amitani

发明人： Koji Ono ,  Kouji Amitani

IPC分类号： H05G108

CPC分类号： G03C5/16 ,  G03C1/49881 ,  G03C2200/39

摘要： An x-ray image forming method is disclosed. The x-ray image is captured employing a flat panel detector; from this panel detector, the x-ray image taken out in the form of image signals; employing a thermally developable photosensitive material comprising photosensitive silver halide grains, a non-photosensitive reducible silver source, and a reducing agent for the silver source, the above-mentioned image signals are converted into variation in light intensity and recorded onto the photosensitive silver halide grains; the x-ray image is obtained by heating in the presence of a non-photosensitive reducible silver source and a reducing agent for the silver source.

摘要翻译： 公开了一种X射线图像形成方法。 使用平板检测器捕获X射线图像; 从该面板检测器，以图像信号的形式取出的x射线图像; 使用包含感光卤化银颗粒，非光敏可还原银源和用于银源的还原剂的热显影感光材料，将上述图像信号转换为光强度的变化并记录到感光卤化银颗粒上 ; 通过在非光敏可还原银源和银源还原剂的存在下加热获得X射线图像。