-
公开(公告)号：US4405863A
公开(公告)日：1983-09-20
申请号：US312557
申请日：1981-10-19
CPC分类号： H01J47/02
摘要： Improved end blocks for the electrode array of a multicell radiation detector support the array and isolate it from the interior walls of an enclosed ionization chamber. A plunger extends from the rear wall of each end block and is biased by a spring within the end block to bear against the rear wall of the detector chamber, biasing the electrode array forwardly against front spacers to position the front edges of the electrodes in equidistantly spaced relation to a x-ray transmissive window formed in the front wall of the detector housing. The bias exerted by the springs is adjustable. A tool is inserted into each end block during assembly of the detector to retract the plungers while the array is being positioned within the opened ionization chamber.The invention greatly reduces noise in the detector caused by microphonics, thus improving the integrity of the detected signal and permitting shorter scanning times and other advantages.
摘要翻译： 用于多单元辐射检测器的电极阵列的改进的端块支撑阵列并将其与封闭电离室的内壁隔离。 柱塞从每个端块的后壁延伸并且被端块内的弹簧偏压以抵靠检测器室的后壁，将电极阵列向前偏压抵靠前间隔件以将电极的前边缘等距地定位 与形成在检测器壳体的前壁中的x射线透射窗口间隔开。 弹簧施加的偏压是可调节的。 在组装检测器以在阵列被定位在打开的电离室内时收缩柱塞的工具被插入每个端块中。 本发明大大降低了由麦克风引起的检测器中的噪声，从而提高了检测信号的完整性，并允许更短的扫描时间和其他优点。
-
公开(公告)号：US4602378A
公开(公告)日：1986-07-22
申请号：US582481
申请日：1984-02-28
CPC分类号： A61B6/4283 , A61B6/04
摘要： Medical diagnostic X-ray table assembly including an X-ray source and detector. The entire assembly is mounted on a cantilevered horizontal transverse pivot for being raised and lowered or tilted as a unit. The table assembly is mounted eccentrically to the horizontal transverse pivot so the table can clear the floor when tilted to the foot down position, yet the table is low enough to be mounted easily by a patient.The X-ray source and detector means are each supported by a series of superposed carriages driven by lead screw drives, thereby allowing the source and detector to independently translate transversely, longitudinally, and toward or away from the patient support. The X-ray source is also mounted on a transverse axis for being pivoted. A novel hydraulic mechanism is provided for tilting the table.The table is versatile, as it can be used for a wide range of radiographic and fluorographic studies and does not require wall mounted or ceiling mounted auxiliary equipment to perform chest X-rays and other procedures not possible with conventional freestanding X-ray tables.
摘要翻译： 包括X射线源和检测器在内的医疗诊断X射线台组件。 整个组件安装在悬臂水平横向枢轴上，作为一个单元升高和降低或倾斜。 桌子组件偏心安装在水平横向枢轴上，因此桌子可以在倾斜到脚下方位置时清除地面，但桌子足够低以便患者容易地安装。 X射线源和检测器装置各自由由丝杠驱动器驱动的一系列重叠托架支撑，从而允许源和检测器横向，纵向地，朝向或远离患者支架独立地平移。 X射线源也安装在横轴上以便枢转。 提供了一种用于倾斜桌子的新型液压机构。 该表具有多功能性，因为它可用于各种射线照相和荧光成像研究，并且不需要壁挂式或天花板安装的辅助设备来执行胸部X射线和其他常规独立X射线表不可能的程序。
-
公开(公告)号：US4062518A
公开(公告)日：1977-12-13
申请号：US740569
申请日：1976-11-10
摘要： On a diagnostic x-ray table, a first group of x-ray shielding panels are supported for rotation on a carrier and another group of panels are supported on a lever that is pivotally connected to the carrier. The lever may be aligned with the carrier to present the combined width of all panels across the front of a combination spot film and fluoroscopic device. Means responsive to pivoting the lever along the side of the apparatus rotate the first group of panels to substantial parallelism with second group to present the panels along the side of the apparatus when the spot film and fluoroscope device is angulated to put the patient being examined in an erect posture.
摘要翻译： 在诊断X射线台上，第一组X射线屏蔽板被支撑以在载体上旋转，另一组面板被支撑在枢转地连接到载体的杆上。 杠杆可以与载体对齐以呈现跨组合点胶片和荧光镜装置的前面的所有面板的组合宽度。 响应于沿着设备侧面枢转杠杆的装置使第一组面板与第二组基本平行地旋转，以便当点胶膜和荧光透镜装置成角度以将被检查的患者置于 直立的姿势。
-
公开(公告)号：US4414473A
公开(公告)日：1983-11-08
申请号：US236804
申请日：1981-02-23
CPC分类号： H01J47/02
摘要： A resilient locking and sealing arrangement for a multi-channel reflective cavity scintillation detector useful in a CT scanner. The absorption coefficient of the detector window is minimized in order to enhance detector efficiency, by forming such window of layers of woven graphite fiber bonded together with epoxy. The detector window includes resilient sealing means positioned to engage the leading edge of unit cell elements assembled to form a detector array. Resilient lock means force the plate into a reference position and into contact with the resilient sealing means thereby to accurately locate the plate in the array, and also to provide an effective light seal.
摘要翻译： 用于CT扫描器的多通道反射腔闪烁检测器的弹性锁定和密封装置。 通过将环氧树脂粘合在一起的编织石墨纤维层的这种窗口，使检测器窗口的吸收系数最小化，以提高检测器效率。 检测器窗口包括弹性密封装置，其定位成接合组装成形成检测器阵列的单元电池元件的前缘。 弹性锁定装置迫使板进入参考位置并与弹性密封装置接触，从而将板精确定位在阵列中，并提供有效的光密封。
-
-
-
搜索结果
4 条记录 (耗时 0.019 秒)
