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    X-ray densitometer detector calibration by beam flattening and continuous dark scanning
    5.
    发明授权
    X-ray densitometer detector calibration by beam flattening and continuous dark scanning 失效
    X射线密度计检测器通过光束平整和连续暗扫描进行校准

    公开(公告)号：US5771272A

    公开(公告)日：1998-06-23

    申请号：US484568

    申请日：1995-06-07

    申请人： Noah Berger ,  Tom Richardson ,  Eric von Stetten ,  Howard P. Weiss

    发明人： Noah Berger ,  Tom Richardson ,  Eric von Stetten ,  Howard P. Weiss

    IPC分类号： A61B6/00 ,  A61B6/04 ,  A61B6/06 ,  A61B6/08 ,  G21K1/10 ,  G21K5/10 ,  G01D18/00

    CPC分类号： G21K1/10 ,  A61B6/0421 ,  A61B6/0457 ,  A61B6/06 ,  A61B6/08 ,  A61B6/482 ,  A61B6/488 ,  A61B6/505 ,  A61B6/405 ,  A61B6/548 ,  A61B6/583

    摘要： Variations in x-ray beam, filtration and detector gain characteristics are corrected by a multiple thickness flattening system. Preferably, an automatic multi-position attenuator mechanism inserts into the x-ray beam one or more flat reference attenuators of uniform composition. Thereafter, the response at each detector channel is measured. Unique factors are thus collected for each channel at multiple attenuation levels. An overall uniform response across the scan field is achieved by applying these correction factors to subsequent scan data. The current system compensates for detector gain by alternately turning X-rays on and off, so that dark level measurements can be interspersed with X-ray signal measurements. Detector offsets are eliminated in a linear data representation, while beam and detector flattening corrections are applied in a logarithmic data representation.

    摘要翻译： x射线束的变化，过滤和检测器增益特性通过多重厚度平坦化系统进行校正。 优选地，自动多位置衰减器机构将均匀组成的一个或多个扁平参考衰减器插入到x射线束中。 此后，测量每个检测器通道的响应。 因此，以多个衰减级别为每个通道收集唯一因子。 通过将这些校正因子应用于后续的扫描数据来实现扫描场的整体均匀响应。 当前系统通过交替地将X射线开启和关闭来补偿检测器增益，使得暗电平测量可以穿插X射线信号测量。 检测器偏移在线性数据表示中被消除，而波束和检测器平坦化校正被应用在对数数据表示中。

    Bone densitometry using x-ray imaging systems
    8.
    发明授权
    Bone densitometry using x-ray imaging systems 失效
    使用x射线成像系统的骨密度测定

    公开(公告)号：US5949846A

    公开(公告)日：1999-09-07

    申请号：US794615

    申请日：1997-02-03

    申请人： Jay A. Stein ,  Howard P. Weiss ,  Vincent E. Quinn ,  Richard E. Cabral ,  John A. Shepherd ,  Kevin E. Wilson

    发明人： Jay A. Stein ,  Howard P. Weiss ,  Vincent E. Quinn ,  Richard E. Cabral ,  John A. Shepherd ,  Kevin E. Wilson

    IPC分类号： A61B6/00 ,  G01N23/00

    CPC分类号： A61B6/505

    摘要： A method of measuring bone mineral density (BMD) of a selected region of bone in a small body portion (such as a limb or extremity), using a mini C-arm x-ray fluoroscopic imaging system to acquire the data from which the BMD is calculated. Apparatus for performing the method includes a tray for positioning the small body portion in the x-ray beam path of the imaging system and a sample of bone of predetermined density supported by the tray in side-by-side relation to the selected region of bone.

    摘要翻译： 使用小型C型臂X射线透视成像系统来测量小体部（例如肢体或肢体）中骨骼的选定区域的骨矿物质密度（BMD）的方法，以获取BMD 被计算。 用于执行该方法的装置包括用于将小体部分定位在成像系统的x射线束路径中的托盘和由托盘支撑的预定密度的骨样品与所选择的骨区域并排关系 。

    Method and apparatus for wireless communication in a mesh network using frequency schedule
    9.
    发明授权
    Method and apparatus for wireless communication in a mesh network using frequency schedule 有权
    使用频率调度的网状网络中的无线通信的方法和装置

    公开(公告)号：US08892135B2

    公开(公告)日：2014-11-18

    申请号：US11776938

    申请日：2007-07-12

    申请人： Jay Philip Werb ,  Victor A. Berry ,  Howard P. Weiss ,  C. Scott Lamb

    发明人： Jay Philip Werb ,  Victor A. Berry ,  Howard P. Weiss ,  C. Scott Lamb

    IPC分类号： H04W4/00

    CPC分类号： H04L5/0037 ,  H04L9/0825 ,  H04L9/083 ,  H04L9/16 ,  H04L9/3247 ,  H04L2209/805 ,  H04W8/005 ,  H04W12/06 ,  H04W24/02 ,  H04W48/16 ,  H04W84/18

    摘要： A method and apparatus for communication in a wireless sensor network. In one embodiment, one or more routers in a network may be available for communication with one or more star nodes at a randomized time and/or frequency. A connectivity assessment, which may be performed at several different frequencies and/or times, may be performed to evaluate the quality of communications between devices in the network. Primary and secondary communication relationships may be formed between devices to provide for system redundancy. One or more proxies may be maintained where each proxy includes a status of one or more devices in the network, e.g., one or more star nodes or routers. Proxies may be used to handle information requests and/or status change requests, e.g., a proxy may be requested to change a communication relationship between devices in the network and may generate command signals to cause the corresponding devices to make the change.

    摘要翻译： 一种用于在无线传感器网络中进行通信的方法和装置。 在一个实施例中，网络中的一个或多个路由器可用于以随机的时间和/或频率与一个或多个星形节点进行通信。 可以执行可以在几个不同频率和/或时间执行的连接性评估，以评估网络中设备之间的通信质量。 可以在设备之间形成主和第二通信关系以提供系统冗余。 可以维护一个或多个代理，其中每个代理包括网络中的一个或多个设备的状态，例如一个或多个星形节点或路由器。 代理可以用于处理信息请求和/或状态改变请求，例如，可以请求代理来改变网络中的设备之间的通信关系，并且可以生成命令信号以使相应的设备进行改变。

    DICOM compliant file communication including quantitative and image data
    10.
    发明授权
    DICOM compliant file communication including quantitative and image data 有权
    DICOM兼容文件通信，包括定量和图像数据

    公开(公告)号：US07283857B1

    公开(公告)日：2007-10-16

    申请号：US09449002

    申请日：1999-11-24

    申请人： John P. Fallon ,  Howard P. Weiss ,  David Mislan

    发明人： John P. Fallon ,  Howard P. Weiss ,  David Mislan

    IPC分类号： A61B5/00

    CPC分类号： G06F19/321 ,  G06F19/00 ,  G16H15/00 ,  Y10S128/92 ,  Y10S707/99945

    摘要： A method of generating medical information including quantitative and image data, comprising steps of performing an image acquisition of at least a portion of a patient to be examined, generating image data based on the performed acquisition, generating quantitative data based on the performed acquisition and constructing a DICOM compatible file, the image data being provided in an image data field and the quantitative data being provided in another field of the DICOM compatible file.

    摘要翻译： 一种产生包括定量和图像数据的医学信息的方法，包括以下步骤：执行要检查的患者的至少一部分的图像采集，基于所执行的获取生成图像数据，基于执行的获取和构造产生定量数据 DICOM兼容文件，图像数据在图像数据字段中提供，并且定量数据被提供在DICOM兼容文件的另一个字段中。