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    Data signal amplifier with automatically controllable dynamic signal range
    1.
    发明授权
    Data signal amplifier with automatically controllable dynamic signal range 有权
    数据信号放大器可自动控制动态信号范围

    公开(公告)号：US06486808B1

    公开(公告)日：2002-11-26

    申请号：US09978727

    申请日：2001-10-16

    申请人： Edward Seppi ,  Edward Shapiro ,  George Zentai ,  Richard Colbeth

    发明人： Edward Seppi ,  Edward Shapiro ,  George Zentai ,  Richard Colbeth

    IPC分类号： H03M184

    CPC分类号： H03M1/129 ,  H03M1/18 ,  H04N5/235 ,  H04N5/243 ,  H04N5/32

    摘要： A preamplifier stage with dynamically controllable signal gain in a data signal processing circuit that includes a downstream analog-to-digital signal converter. The level of the data signal subsequent to its preamplification is monitored and the gain of the preamplifier stage is dynamically adjusted in response to such data signal transcending one or more predetermined thresholds. Hence, the effective dynamic range of the preamplifier stage is extended, thereby also effectively extending the dynamic range of the overall system beyond that to which it would have otherwise been limited by the dynamic range of the analog-to-digital signal converter. In accordance with a preferred embodiment of the invention, such a preamplifier is used in an X-ray imaging system such as that using flat panel solid state imaging devices.

    摘要翻译： 一种在包括下游模拟 - 数字信号转换器的数据信号处理电路中具有动态可控的信号增益的前置放大器级。 监视其预放大之后的数据信号的电平，并响应于超过一个或多个预定阈值的这种数据信号来动态调整前置放大器级的增益。 因此，前置放大器级的有效动态范围被扩展，从而也有效地扩展了整个系统的动态范围，超出了其将被模拟 - 数字信号转换器的动态范围所限制的范围。 根据本发明的优选实施例，这种前置放大器用于诸如使用平板固态成像装置的X射线成像系统中。

    Asymmetric flattening filter for x-ray device
    2.
    发明申请
    Asymmetric flattening filter for x-ray device 有权
    用于x射线装置的非对称平坦化滤光片

    公开(公告)号：US20060256925A1

    公开(公告)日：2006-11-16

    申请号：US11127343

    申请日：2005-05-11

    申请人： Gary Virshup ,  James Boye ,  Edward Seppi ,  Heinrich Riem ,  Govin Dasani ,  Edward Shapiro

    发明人： Gary Virshup ,  James Boye ,  Edward Seppi ,  Heinrich Riem ,  Govin Dasani ,  Edward Shapiro

    IPC分类号： G21K3/00

    CPC分类号： G21K1/10

    摘要： Devices and methods for implementing selective, or asymmetric, attenuation of an x-ray beam. In one example, a filter is provided that is substantially in the form of a wedge where some portions of the filter are thicker, and thus provide greater attenuation, than other, thinner portions of the filter. The filter is situated between the target surface of the anode and the x-ray subject so that x-rays generated by the target pass through the filter before reaching the x-ray subject. Specifically, the filter is oriented so that the thicker portion of the filter receives the higher intensity portion of the x-ray beam, while the thinner portion of the filter receives the relatively lower intensity portion of the x-ray beam. Thus, the gain profile of the x-ray beam is flattened so that the intensity, or flux, of the x-ray beam is relatively uniform throughout a substantial portion of the beam profile.

    摘要翻译： 用于实现X射线束的选择性或不对称衰减的装置和方法。 在一个示例中，提供基本上为楔形件的过滤器，其中过滤器的一些部分比过滤器的其它较薄部分更厚，因此提供更大的衰减。 过滤器位于阳极的目标表面和X射线对象之间，使得由目标产生的x射线在到达x射线物体之前通过过滤器。 具体地，过滤器被定向成使得过滤器的较厚部分接收x射线束的较高强度部分，而过滤器的较薄部分接收x射线束的较低强度部分。 因此，x射线束的增益分布被平坦化，使得x射线束的强度或通量在光束轮廓的整个实质部分中相对均匀。

    Methods, systems, and computer-program products to correct degradation in tomographic images caused by extraneous radiation
    3.
    发明授权
    Methods, systems, and computer-program products to correct degradation in tomographic images caused by extraneous radiation 有权
    方法，系统和计算机程序产品，以纠正由外来辐射造成的断层图像的退化

    公开(公告)号：US08194821B2

    公开(公告)日：2012-06-05

    申请号：US12239699

    申请日：2008-09-26

    申请人： Edward Seppi ,  Edward Shapiro ,  Gary Virshup ,  Josh Star-Lack

    发明人： Edward Seppi ,  Edward Shapiro ,  Gary Virshup ,  Josh Star-Lack

    IPC分类号： G01N23/04

    CPC分类号： G21K1/10 ,  A61B6/00 ,  A61B6/4291

    摘要： Disclosed are systems, methods, and computer program products that generate estimates of errors caused by extraneous radiation in tomographic systems, such as cone-beam computerized tomography (CBCT) systems, fluoroscopic tomography systems, radiographic tomography systems, laminar tomography imaging systems, and the like. In one group of inventions, spatial errors are estimated from projection data collected where a known spatial perturbation has been introduced into radiation intensity of the source. In another group of inventions, temporal errors are estimated from a sequence of projections where a known perturbation in the radiation intensity of the source for different projections has been introduced.

    摘要翻译： 公开了系统，方法和计算机程序产品，其产生在层析成像系统中由外部辐射引起的误差的估计，诸如锥束计算机断层摄影（CBCT）系统，荧光透视断层摄影系统，放射照相层析成像系统，层析成像系统，以及 喜欢。 在一组发明中，空间误差是从收集的投影数据估计的，其中已知的空间扰动已被引入到源的辐射强度。 在另一组发明中，根据已经引入了用于不同投影的源的辐射强度的已知扰动的一系列投影来估计时间误差。

    Methods, Systems, and Computer-Program Products to Correct Degradation in Tomographic Images Caused by Extraneous Radiation
    4.
    发明申请
    Methods, Systems, and Computer-Program Products to Correct Degradation in Tomographic Images Caused by Extraneous Radiation 有权
    方法，系统和计算机程序产品，以纠正由外来辐射引起的断层图像的退化

    公开(公告)号：US20100080337A1

    公开(公告)日：2010-04-01

    申请号：US12239699

    申请日：2008-09-26

    申请人： Edward Seppi ,  Edward Shapiro ,  Gary Virshup ,  Josh Star-Lack

    发明人： Edward Seppi ,  Edward Shapiro ,  Gary Virshup ,  Josh Star-Lack

    IPC分类号： G21K1/00 ,  H05G1/60

    CPC分类号： G21K1/10 ,  A61B6/00 ,  A61B6/4291

    摘要： Disclosed are systems, methods, and computer program products that generate estimates of errors caused by extraneous radiation in tomographic systems, such as cone-beam computerized tomography (CBCT) systems, fluoroscopic tomography systems, radiographic tomography systems, laminar tomography imaging systems, and the like. In one group of inventions, spatial errors are estimated from projection data collected where a known spatial perturbation has been introduced into radiation intensity of the source. In another group of inventions, temporal errors are estimated from a sequence of projections where a known perturbation in the radiation intensity of the source for different projections has been introduced.

    摘要翻译： 公开了系统，方法和计算机程序产品，其产生在层析成像系统中由外部辐射引起的误差的估计，诸如锥束计算机断层摄影（CBCT）系统，荧光透视断层摄影系统，放射照相层析成像系统，层析成像系统，以及 喜欢。 在一组发明中，空间误差是从收集的投影数据估计的，其中已知的空间扰动已被引入到源的辐射强度。 在另一组发明中，根据已经引入了用于不同投影的源的辐射强度的已知扰动的一系列投影来估计时间误差。

    Asymmetric flattening filter for x-ray device
    7.
    发明授权
    Asymmetric flattening filter for x-ray device 有权
    用于x射线装置的非对称平坦化滤光片

    公开(公告)号：US07397904B2

    公开(公告)日：2008-07-08

    申请号：US11127343

    申请日：2005-05-11

    申请人： Gary Virshup ,  James Boye ,  Edward J. Seppi ,  Heinrich Riem ,  Govin Dasani ,  Edward Shapiro

    发明人： Gary Virshup ,  James Boye ,  Edward J. Seppi ,  Heinrich Riem ,  Govin Dasani ,  Edward Shapiro

    IPC分类号： G21K3/00

    CPC分类号： G21K1/10

    摘要： Devices and methods for implementing selective, or asymmetric, attenuation of an x-ray beam. In one example, a filter is provided that is substantially in the form of a wedge where some portions of the filter are thicker, and thus provide greater attenuation, than other, thinner portions of the filter. The filter is situated between the target surface of the anode and the x-ray subject so that x-rays generated by the target pass through the filter before reaching the x-ray subject. Specifically, the filter is oriented so that the thicker portion of the filter receives the higher intensity portion of the x-ray beam, while the thinner portion of the filter receives the relatively lower intensity portion of the x-ray beam. Thus, the gain profile of the x-ray beam is flattened so that the intensity, or flux, of the x-ray beam is relatively uniform throughout a substantial portion of the beam profile.

    摘要翻译： 用于实现X射线束的选择性或不对称衰减的装置和方法。 在一个示例中，提供基本上为楔形件的过滤器，其中过滤器的一些部分比过滤器的其它较薄部分更厚，因此提供更大的衰减。 过滤器位于阳极的目标表面和X射线对象之间，使得由目标产生的x射线在到达x射线物体之前通过过滤器。 具体地，过滤器被定向成使得过滤器的较厚部分接收x射线束的较高强度部分，而过滤器的较薄部分接收x射线束的较低强度部分。 因此，x射线束的增益分布被平坦化，使得x射线束的强度或通量在光束轮廓的整个实质部分中相对均匀。

    High light output electrodeless fluorescent closed-loop lamp
    9.
    发明授权
    High light output electrodeless fluorescent closed-loop lamp 有权
    高光输出无极荧光闭环灯

    公开(公告)号：US06522085B2

    公开(公告)日：2003-02-18

    申请号：US09907210

    申请日：2001-07-16

    申请人： Oleg A. Popov ,  Jagannathan Ravi ,  Robert Chandler ,  Edward Shapiro

    发明人： Oleg A. Popov ,  Jagannathan Ravi ,  Robert Chandler ,  Edward Shapiro

    IPC分类号： H05B4116

    CPC分类号： H05B41/24 ,  H01J65/048

    摘要： An electrodeless fluorescent lamp comprises a closed-loop (“tokamak”) envelope, two ferrite cores, and an induction coil that is disposed on the envelope walls inside the closed-loop formed by the envelope. The envelope comprises two straight tubes of the same diameter. All coils' turns have essential the same length and are parallel to each other and to the closed-loop axis. Each ferrite core encircles a segment of each the coil's turn and one connecting tube. The lamp can be operated at driving frequencies of 100-600 kHz and lamp powers of 50-250 W. The ferrite core power losses were 6-8 W when the lamp was operated at a frequency of 200-300 kHz and lamp power of 140-150 W. The lamp light output was 12,500 lumen and luminous efficacy was 87 LPW.

    摘要翻译： 无电极荧光灯包括闭环（“托卡马克”）外壳，两个铁氧体磁心和设置在由信封形成的闭环内的信封壁上的感应线圈。 信封包括两个相同直径的直管。 所有线圈的匝必须具有相同的长度，并且彼此平行并且与闭环轴线平行。 每个铁氧体磁芯都围绕线圈的每一圈和一个连接管。 该灯可以在100-600kHz的驱动频率和50-250W的灯功率下操作。当灯以200-300kHz的频率操作并且灯功率为140时，铁氧体磁芯功率损耗为6-8W -150 W.灯光输出为12,500流明，发光效率为87 LPW。