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    14.
    发明专利
    未知

    公开(公告)号：AT207651T

    公开(公告)日：2001-11-15

    申请号：AT95925598

    申请日：1995-07-11

    Applicant: PHOTOELECTRON CORP

    Inventor： SMITH DONALD O ,  SLISKI ALAN P ,  HARTE KENNETH J

    IPC: G21K5/02 ,  A61B1/00 ,  A61N5/10 ,  G01N23/083 ,  G21K5/00 ,  G21K5/04 ,  G21K5/10 ,  H01J35/08 ,  H01J35/30 ,  H01J35/32 ,  H05G1/06 ,  H05G1/10 ,  H05G1/32 ,  H05G1/34

    Abstract: The present invention is directed to an x-ray source for irradiating a surface defining a body cavity in accordance with a predetermined dose distribution. The source comprises a housing, an elongated tubular probe, a target assembly, and an inflatable balloon. The housing encloses an electron beam source and includes elements for generating an electron beam along a beam path. The tubular probe extends along a central axis from the housing about the beam path. The target assembly extends along the central axis and is coupled to the end of the probe distal from the housing. The target assembly includes a target element is positioned in the beam path. The target element is adapted to emit x-rays in response to electrons incident thereon from the beam. The probe tip assembly and associated control electronics include elements for positioning the target element in the beam path, and is substantially x-ray transparent. The balloon is affixed to the distal end of the probe and is inflatable so that when that probe end is inserted into a body cavity, the balloon may be inflated to stretch the cavity to a known shape. Positioning the probe tip inside the inflated balloon allows delivery of a uniform, or other desired, dose of radiation to the surface defining a body cavity.

    X-ray apparatus for applying a predetermined flux to an interior surface of a body cavity
    17.
    发明专利
    X-ray apparatus for applying a predetermined flux to an interior surface of a body cavity 未知

    公开(公告)号：AU2967695A

    公开(公告)日：1996-02-09

    申请号：AU2967695

    申请日：1995-07-11

    Applicant: PHOTOELECTRON CORP

    Inventor： SMITH DONALD O ,  SLISKI ALAN P ,  HARTE KENNETH J

    IPC: G21K5/02 ,  A61B1/00 ,  A61N5/10 ,  G01N23/083 ,  G21K5/00 ,  G21K5/04 ,  G21K5/10 ,  H01J35/08 ,  H01J35/30 ,  H01J35/32 ,  H05G1/06 ,  H05G1/10 ,  H05G1/32 ,  H05G1/34

    Abstract: The present invention is directed to an x-ray source for irradiating a surface defining a body cavity in accordance with a predetermined dose distribution. The source comprises a housing, an elongated tubular probe, a target assembly, and an inflatable balloon. The housing encloses an electron beam source and includes elements for generating an electron beam along a beam path. The tubular probe extends along a central axis from the housing about the beam path. The target assembly extends along the central axis and is coupled to the end of the probe distal from the housing. The target assembly includes a target element is positioned in the beam path. The target element is adapted to emit x-rays in response to electrons incident thereon from the beam. The probe tip assembly and associated control electronics include elements for positioning the target element in the beam path, and is substantially x-ray transparent. The balloon is affixed to the distal end of the probe and is inflatable so that when that probe end is inserted into a body cavity, the balloon may be inflated to stretch the cavity to a known shape. Positioning the probe tip inside the inflated balloon allows delivery of a uniform, or other desired, dose of radiation to the surface defining a body cavity.

    X-ray source with shaped radiation pattern
    18.
    发明专利
    X-ray source with shaped radiation pattern 未知

    公开(公告)号：AU1686295A

    公开(公告)日：1995-08-08

    申请号：AU1686295

    申请日：1995-01-19

    Applicant: PHOTOELECTRON CORP

    Inventor： DINSMORE MARK T ,  HARTE KENNETH J ,  SLISKI ALAN P ,  SMITH DONALD O ,  OETTINGER PETER E

    IPC: A61B19/00 ,  A61N5/10 ,  H01B11/22 ,  H01J35/00 ,  H01J35/06 ,  H01J35/08 ,  H01J35/14 ,  H01J35/30 ,  H01J35/32 ,  H05G1/00 ,  H05G1/06 ,  H05G1/10 ,  H05G1/32 ,  H05G1/34

    Abstract: This invention is directed to an x-ray source comprising a housing (12), a power supply (12A), an elongated tubular probe (14), a target assembly (26), and a beam steering assembly (29). The housing encloses an electron beam source (22), and has elements for generating an electron beam along a beam path. The power supply (12A) is programmable to control the voltage, current and timing of assembly (26) extends along the central axis and is adapted for coupling to end of the probe (14) distal from the housing (12). The target assembly (26) includes target element (26A) positioned along the beam path, wherein the target element (26A) is adapted to emit x-rays in a predetermined spectral range in response to incident electrons. The beam steering assembly (29) includes a deflection element (30), a feedback network (31) and a deflection controller (144). The deflection element (30) deflects the beam from a nominal axis to a selected surface region on the target element (26) in response to a deflection control signal. The feedback network (31) includes deflection sensing elements for sensing the deflection of the beam and elements for generating feedback signal representative thereof.

    METHOD AND APPARATUS FOR MEASURING RADIATION DOSE DISTRIBUTION
    19.
    发明公开
    METHOD AND APPARATUS FOR MEASURING RADIATION DOSE DISTRIBUTION 失效
    方法和设备测量辐射密度分布

    公开(公告)号：EP0855015A4

    公开(公告)日：1999-11-03

    申请号：EP96934099

    申请日：1996-10-04

    Applicant: PHOTOELECTRON CORP

    Inventor： SLISKI ALAN P ,  DALTERIO MICHAEL ,  SMITH DONALD O

    IPC: G01T7/00 ,  A61N5/10 ,  G01T1/169 ,  G01D18/00

    CPC classification number: G01T1/169 ,  A61N5/1048

    Abstract: This invention is a phantom apparatus (10) for measuring the radiation dose distribution produced by a brachy-therapy device used to treat a localized area with radiation. The brachy-therapy device includes an insertable probe (24) capable of producing predefined radiation dose geometries about a predefined point. The phantom apparatus (10) includes a tank (12) containing a medium having a radiological equivalent characteristic of the localized area to be treated. The phantom apparatus (10) also includes a radiation sensor (32) for measuring the radiation dose and a positioning system for moving the probe (24) with respect to the radiation sensor (32). The radiation sensor (32) is also coupled to a positioning system (50) to orient the sensor (32) for optimal dose measurements. The phantom apparatus (10) includes a control system (160) that coordinates the movements of the probe (24) and the radiation sensor (32) to avoid a collision. The control system (160) moves the probe (24) along a predefined path around radiation sensor (32) and records the dose at predefined points along the path. In order to reduce the settling time of the sensor (32), the path is selected to coincide with the isodose contours of the radiation dose distribution of the probe (24).

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