Universal radiographic/fluoroscopic digital room
    1.
    发明授权
    Universal radiographic/fluoroscopic digital room 失效
    通用射线照相/荧光数字室

    公开(公告)号:US5870450A

    公开(公告)日:1999-02-09

    申请号:US882747

    申请日:1997-06-26

    Abstract: A universal radiographic/fluoroscopic room includes a digital imaging platform adapted to occupy operating and non-operating positions. A park function automatically moves the digital imaging platform between the operating and non-operating positions without requiring operator effort. The digital imaging platform has local and remote control panels having substantially duplicate functions. The remote control panel allows the operator to control operation of the digital imaging platform from a location shielded from X-ray exposure. Methods and apparatus are provided to ensure safe, predictable, and consistent operation from all control panels. The operator selects any available operating mode, including auto-bucky, auto-wall, auto-table, auto-table/wall, servo-tomo, conventional stepping, stepped-digital, auto-step, and auto-step-center modes, using a control panel. The control system automatically determines which system components are required to perform that type of examination, moves the components into operational or storage positions as required, and prepares each component for operation.

    Abstract translation: 通用射线照相/透视室包括适于占据操作和非操作位置的数字成像平台。 停放功能可自动将数字成像平台移动到操作位置和非操作位置之间,而无需操作人员的努力。 数字成像平台具有基本上重复的功能的本地和远程控制面板。 遥控面板允许操作者从屏蔽X射线曝光的位置控制数字成像平台的操作。 提供了方法和设备,以确保所有控制面板的安全,可预测和一致的操作。 操作员选择任何可用的操作模式,包括自动平衡,自动墙,自动表,自动桌面/墙壁,伺服断层扫描,常规步进,步进数字,自动步进和自动分步中心模式, 使用控制面板。 控制系统自动确定执行该类型检查需要哪些系统组件,并根据需要将组件移动到操作或存储位置,并准备每个组件进行操作。

    Universal radiographic/fluoroscopic digital room
    2.
    发明授权
    Universal radiographic/fluoroscopic digital room 失效
    通用射线照相/荧光数字室

    公开(公告)号:US5768336A

    公开(公告)日:1998-06-16

    申请号:US728884

    申请日:1996-10-11

    Abstract: A universal radiographic/fluoroscopic "room" is constructed according to the present invention by combining a versatile group of X-ray examination system components, electrical and mechanical drive components, and sensing components, under the supervision of a flexible control system, to form a universal diagnostic medical imaging system capable of performing radiographic, fluoroscopic, tomographic, and stepped examinations in several different operator-selectable configurations. The operator selects any available operating mode, including auto-bucky, auto-wall, auto-table, auto-table/wall, servo-tomo, conventional stepping, stepped-digital, auto-step, and auto-step-center modes, using a a control panel. The control system automatically determines which system components are required to perform that type of examination, moves the components into operational or storage positions as required, and prepares each component for operation. The operator need not manually reconfigure the equipment. In "stepped-digital" modes useful for peripheral angiography, an under-table X-ray tube and over-table image intensifier execute a series of radiographic exposures at preselected locations. The digital imaging platform is moved while the patient remains stationary. This reduces motion artifacts. For each step, a test fluoroscopic exposure is performed under automatic brightness control to determine an optimum technique. The technique so determined is converted for use in a subsequent radiographic exposure. The operator observes the flow of the contrast medium during the test fluoroscopic exposure and commands the radiographic exposure when the contrast medium arrives at the desired position in the image. Alternatively, the control system may detect the presence of the contrast medium in the image by comparing a change in image contrast with a previously observed threshold change.

    Abstract translation: 根据本发明,通过在柔性控制系统的监督下组合通用组的X射线检查系统部件,电气和机械驱动部件以及感测部件来构造通用射线照相/透视“房间”,以形成 通用诊断医学成像系统能够在几种不同的操作者可选择的配置中进行射线照相,荧光镜,断层扫描和阶梯式检查。 操作员选择任何可用的操作模式,包括自动平衡,自动墙,自动表,自动桌面/墙壁,伺服断层扫描,常规步进,步进数字,自动步进和自动分步中心模式, 使用控制面板。 控制系统自动确定执行该类型检查需要哪些系统组件,并根据需要将组件移动到操作或存储位置,并准备每个组件进行操作。 操作员无需手动重新配置设备。 在用于外周血管造影的“步进数字”模式中,下表X射线管和超表面图像增强器在预选位置执行一系列放射照相曝光。 数字成像平台在患者保持静止时移动。 这减少了运动伪影。 对于每个步骤,在自动亮度控制下进行测试荧光透视以确定最佳技术。 如此确定的技术被转换用于随后的射线照相曝光。 操作者在测试荧光透视曝光期间观察造影剂的流动,并且当造影剂到达图像中的期望位置时命令放射照相曝光。 或者,控制系统可以通过将图像对比度的变化与先前观察到的阈值变化进行比较来检测图像中的造影剂的存在。

    Method and apparatus for determining the speed of rotation of an AC motor
    3.
    发明授权
    Method and apparatus for determining the speed of rotation of an AC motor 失效
    用于确定AC电动机的旋转速度的方法和装置

    公开(公告)号:US5883487A

    公开(公告)日:1999-03-16

    申请号:US900613

    申请日:1997-07-25

    CPC classification number: H05G1/26 G01P3/48 H01J2235/10

    Abstract: A speed control apparatus for determining and controlling the speed of rotation of a rotor in an AC motor. The motor includes a stator having main and auxiliary windings. Main and auxiliary winding controllers control the operational input signals supplied to the main and auxiliary windings by a signal generator. A pulse generator is connected to the main winding for providing a test pulse during a speed measurement operation. The test pulse magnetizes a portion of the rotor which induces a feedback EMF signal in the auxiliary winding. A feedback sensor circuit receives the feedback signal and forwards it to a microprocessor. The microprocessor calculates the rotational speed of the rotor based on the feedback signal.

    Abstract translation: 一种用于确定和控制交流电动机中的转子的转速的速度控制装置。 电动机包括具有主绕组和辅助绕组的定子。 主辅助绕组控制器通过信号发生器控制提供给主绕组和辅助绕组的工作输入信号。 脉冲发生器连接到主绕组,用于在速度测量操作期间提供测试脉冲。 测试脉冲磁化转子的一部分,其在辅助绕组中引起反馈EMF信号。 反馈传感器电路接收反馈信号并将其转发到微处理器。 微处理器基于反馈信号计算转子的转速。

    Universal radiographic/fluoroscopic digital room

    公开(公告)号:US5751788A

    公开(公告)日:1998-05-12

    申请号:US729989

    申请日:1996-10-11

    Abstract: A universal radiographic/fluoroscopic "room" is constructed according to the present invention by combining a versatile group of X-ray examination system components, electrical and mechanical drive components, and sensing components, under the supervision of a flexible control system, to form a universal diagnostic medical imaging system capable of performing radiographic, fluoroscopic, tomographic, and stepped examinations in several different operator-selectable configurations. The operator selects any available operating mode, including auto-bucky, auto-wall, auto-table, auto-table/wall, servo-tomo, conventional stepping, stepped-digital, auto-step, and auto-step-center modes, using a a control panel. The control system automatically determines which system components are required to perform that type of examination, moves the components into operational or storage positions as required, and prepares each component for operation. The operator need not manually reconfigure the equipment. In "stepped-digital" modes useful for peripheral angiography, an under-table X-ray tube and over-table image intensifier execute a series of radiographic exposures at preselected locations. The digital imaging platform is moved while the patient remains stationary. This reduces motion artifacts. For each step, a test fluoroscopic exposure is performed under automatic brightness control to determine an optimum technique. The technique so determined is converted for use in a subsequent radiographic exposure. The operator observes the flow of the contrast medium during the test fluoroscopic exposure and commands the radiographic exposure when the contrast medium arrives at the desired position in the image. Alternatively, the control system may detect the presence of the contrast medium in the image by comparing a change in image contrast with a previously observed threshold change.

    Method and apparatus for controlling and optimizing output of an x-ray
source
    7.
    发明授权
    Method and apparatus for controlling and optimizing output of an x-ray source 失效
    用于控制和优化x射线源的输出的方法和装置

    公开(公告)号:US5680430A

    公开(公告)日:1997-10-21

    申请号:US636565

    申请日:1996-04-23

    CPC classification number: H05G1/26 H05G1/34 H05G1/36

    Abstract: A method for controlling output of an x-ray source to optimize x-ray energy arriving at an associated x-ray receptor during linear tomographic examination. The method comprises the steps of selecting tomographic sweep parameters, predicting a set of x-ray source control parameters based, at least in part, upon the selected tomographic sweep parameters, and controlling x-ray source output in accordance with the set of x-ray source control parameters to optimize x-ray energy arriving at the associated x-ray receptor. Apparatus for controlling output of an x-ray source is also disclosed.

    Abstract translation: 用于控制x射线源的输出以在线性层析成像检查期间优化到达相关X射线受体的x射线能量的方法。 该方法包括以下步骤:至少部分地基于所选择的断层扫描参数来选择层析扫描参数,预测一组x射线源控制参数,以及根据x- 射线源控制参数以优化到达相关联的X射线受体的X射线能量。 还公开了用于控制x射线源的输出的装置。

    Automatic exposure and brightness control for fluoroscopic and
radio-graphic imaging
    8.
    发明授权
    Automatic exposure and brightness control for fluoroscopic and radio-graphic imaging 失效
    荧光镜和无线电图像成像的自动曝光和亮度控制

    公开(公告)号:US6047042A

    公开(公告)日:2000-04-04

    申请号:US47535

    申请日:1998-03-25

    CPC classification number: H05G1/44 G01N23/04

    Abstract: An exposure control system for radiographic, fluoroscopic, or other diagnostic imaging includes an exposure sensor array and a control element. The exposure sensor array has a plurality of sensor elements directed to defined locations uniformly distributed over the imaging field and may make direct or indirect measurements of exposure rate or imaging converter brightness. A structure or region of diagnostic interest to examining personnel is identified, and only sensors which correspond to locations within the area of interest are selected for use in exposure control. Predefined examination parameters suitable for particular anatomical patient regions are stored. Upon request by examining personnel to perform an examination of an anatomical patient region, the parameters are retrieved for use. The parameters include a preselection of sensors typically suitable for examinations of such region. The sensor locations, and their selection status, may be displayed as an overlay on an actual diagnostic image so that examining personnel may determine which sensors correspond to a structure or region of diagnostic interest. Examining personnel may manually select or deselect sensors. During an automatic mode examination, sensor outputs are analyzed and sensors providing apparently spurious outputs are deselected.

    Abstract translation: 用于放射照相,荧光镜或其它诊断成像的曝光控制系统包括曝光传感器阵列和控制元件。 曝光传感器阵列具有指向均匀分布在成像场上的限定位置的多个传感器元件,并且可以进行曝光率或成像转换器亮度的直接或间接测量。 识别检查人员的诊断感兴趣的结构或区域,并且仅选择对应于感兴趣区域内的位置的传感器用于曝光控制。 存储适合于特定解剖患者区域的预定义检查参数。 根据要求,通过检查人员对解剖患者区域进行检查,检索参数以供使用。 这些参数包括通常适合于这种区域检查的传感器的预选。 传感器位置及其选择状态可以被显示为实际诊断图像上的覆盖物,使得检查人员可以确定哪些传感器对应于诊断感兴趣的结构或区域。 检查人员可以手动选择或取消选择传感器。 在自动模式检查期间,分析传感器输出,并取消选择提供明显虚假输出的传感器。

    Radiographic/fluoroscopic imaging system with reduced patient dose and
faster transitions between radiographic and fluoroscopic modes
    9.
    发明授权
    Radiographic/fluoroscopic imaging system with reduced patient dose and faster transitions between radiographic and fluoroscopic modes 失效
    射线照相/透视成像系统,减少患者剂量,并在射线照相和荧光镜模式之间更快的转换

    公开(公告)号:US5917883A

    公开(公告)日:1999-06-29

    申请号:US884344

    申请日:1997-06-27

    Abstract: A radiographic/fluoroscopic imaging system provides rapid transition from fluoroscopic to radiographic imaging mode by maintaining the X-ray tube high voltage, increasing the filament current, allowing X-ray tube current to increase toward the desired radiographic current, and terminating exposure when the desired X-ray dose has been achieved. Rapid transition from radiographic to fluoroscopic imaging mode is provided by reducing x-ray tube high voltage to produce an equivalent fluoroscopic-level x-ray output at high initial current, dropping filament current, and enabling ABS control of the high-voltage. As x-ray tube current drops, ABS correspondingly increase high voltage to maintain the desired output. The imaging system obtains movement-related information by analyzing a video signal (such as from fluoroscopic image or an image from an optical camera trained on the patient), or from operator movement requests. The imaging system uses movement-related information to responsively control fluoroscopic pulse rate or other imaging parameters. The imaging system can also use such information to initiate a radiographic exposure, or advance to the next step of an operator programmed examination consisting of interspersed fluoroscopic and radiographic exposures. This results in a lower dose to both the patient and the examiner, consistent with high image quality.

    Abstract translation: 射线照相/透视成像系统通过维持X射线管的高电压,增加细丝电流,使得X射线管的电流朝向期望的射线照相电流增加,从而提供从荧光透视到放射照相成像模式的快速过渡,并且当期望的 已经实现了X射线剂量。 通过降低X射线管高电压,在高初始电流下产生等效的荧光X射线输出,降低灯丝电流,并实现高压电流的ABS控制,从射线照相到荧光成像模式的快速转换。 当X射线管电流下降时,ABS相应地增加高电压以保持期望的输出。 成像系统通过分析视频信号(例如来自荧光镜图像或来自患者训练的光学摄像机的图像)或操作者移动请求来获得运动相关信息。 成像系统使用运动相关信息来响应地控制荧光透视脉率或其他成像参数。 成像系统还可以使用这样的信息来启动放射照相曝光,或者进行到由穿插的荧光透视和射线照相曝光组成的操作者编程检查的下一步骤。 这导致患者和检查者的剂量较低,与高图像质量一致。

    Universal radiographic/fluoroscopic digital room
    10.
    发明授权
    Universal radiographic/fluoroscopic digital room 失效
    通用射线照相/荧光数字室

    公开(公告)号:US5636259A

    公开(公告)日:1997-06-03

    申请号:US443486

    申请日:1995-05-18

    Abstract: A universal radiographic/fluoroscopic "room" is constructed according to the present invention by combining a versatile group of X-ray examination system components, electrical and mechanical drive components, and sensing components, under the supervision of a flexible control system, to form a universal diagnostic medical imaging system capable of performing radiographic, fluoroscopic, tomographic, and stepped examinations in several different operator-selectable configurations. The operator selects any available operating mode, including auto-bucky, auto-wall, auto-table, auto-table/wall, servo-tomo, conventional stepping, stepped-digital, auto-step, and auto-step-center modes, using a control panel. The control system automatically determines which system components are required to perform that type of examination, moves the components into operational or storage positions as required, and prepares each component for operation. The operator need not manually reconfigure the equipment. In "stepped-digital" modes useful for peripheral angiography, an under-table X-ray tube and over-table image intensifier execute a series of radiographic exposures at preselected locations. The digital imaging platform is moved while the patient remains stationary. This reduces motion artifacts. For each step, a test fluoroscopic exposure is performed under automatic brightness control to determine an optimum technique. The technique so determined is converted for use in a subsequent radiographic exposure. The operator observes the flow of the contrast medium during the test fluoroscopic exposure and commands the radiographic exposure when the contrast medium arrives at the desired position in the image. Alternatively, the control system may detect the presence of the contrast medium in the image by comparing a change in image contrast with a previously observed threshold change.

    Abstract translation: 根据本发明,通过在柔性控制系统的监督下组合通用组的X射线检查系统部件,电气和机械驱动部件以及感测部件来构造通用射线照相/透视“房间”,以形成 通用诊断医学成像系统能够在几种不同的操作者可选择的配置中进行射线照相,荧光镜,断层扫描和阶梯式检查。 操作员选择任何可用的操作模式,包括自动平衡,自动墙,自动表,自动桌面/墙壁,伺服断层扫描,常规步进,步进数字,自动步进和自动分步中心模式, 使用控制面板。 控制系统自动确定执行该类型检查需要哪些系统组件,并根据需要将组件移动到操作或存储位置,并准备每个组件进行操作。 操作员无需手动重新配置设备。 在用于外周血管造影的“步进数字”模式中,下表X射线管和超表面图像增强器在预选位置执行一系列放射照相曝光。 数字成像平台在患者保持静止时移动。 这减少了运动伪影。 对于每个步骤,在自动亮度控制下进行测试荧光透视以确定最佳技术。 如此确定的技术被转换用于随后的射线照相曝光。 操作者在测试荧光透视曝光期间观察造影剂的流动,并且当造影剂到达图像中的期望位置时命令放射照相曝光。 或者,控制系统可以通过将图像对比度的变化与先前观察到的阈值变化进行比较来检测图像中的造影剂的存在。

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