Ultrasonic wave medical treatment apparatus suitable for use under guidance of magnetic resonance imaging
    1.
    发明公开
    Ultrasonic wave medical treatment apparatus suitable for use under guidance of magnetic resonance imaging 失效
    适用于磁共振成像引导的超声波医疗器械

    公开(公告)号:EP0938914A2

    公开(公告)日:1999-09-01

    申请号:EP99111088.3

    申请日:1994-03-09

    IPC分类号: A61N7/02 G01R33/28

    摘要: An ultrasonic wave medical treatment apparatus capable of preventing the displacement of the focal point (7) of the ultrasonic waves from the treatment target portion (8) within the patient (3), eliminating a need for re-positioning of the ultrasonic wave applicator (1) with respect to the patient (3), an taking MR images to be utilized during the treatment at a high resolution. In this apparatus, the ultrasonic wave applicator (1) can be integrally incorporated within a treatment table (22) for carrying the patient into the MRI gantry (25) for taking the MR images. The surface coil for taking the MR images can be provided on a surface film of a water bag (5) in the ultrasonic wave applicator (1), or on a body cavity probe on which the ultrasonic transducer (2) is also provided. The mixing rate of the coupling fluid can be adjusted, and the impedance matching between the ultrasonic transducer (2) and the driving circuit (12) can be maintained by minimizing the reflected electric power from the ultrasonic transducer (2).

    摘要翻译: 本发明提供一种能够防止来自患者(3)内的被处理部位(8)的超声波的焦点(7)的位移的超声波医疗装置,无需重新定位超声波施加器( 1)相对于患者(3),以高分辨率拍摄在治疗期间使用的MR图像。 在该设备中,超声波施加器(1)可以整体结合在治疗台(22)内,用于将患者携带到MRI机架(25)中以拍摄MR图像。 用于摄取MR图像的表面线圈可以设置在超声波施加器(1)中的水袋(5)的表面膜上,或设置在其上还设置有超声波换能器(2)的体腔探针上。 可以调节耦合流体的混合速率,并且通过使来自超声波换能器(2)的反射功率最小化,可以维持超声波换能器(2)与驱动电路(12)之间的阻抗匹配。