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1. 发明授权

US5642395A Imaging chain with miniaturized C-arm assembly for mobile X-ray imaging system 失效
标题翻译：成像链，具有用于移动X射线成像系统的小型C型臂组件
公开(公告)号：US5642395A
公开(公告)日：1997-06-24
申请号：US511755
申请日：1995-08-07
申请人： R. Larry Anderton , Steven E. Curtis , R. Bruce Spratt
发明人： R. Larry Anderton , Steven E. Curtis , R. Bruce Spratt
IPC分类号： A61B6/00 , A61B6/02 , H05G1/02
CPC分类号： A61B6/4441 , A61B6/4225
摘要： A miniaturized C-arm and imaging apparatus for use with X-ray diagnostic equipment and the like. An X-ray imaging system is coupled to a C-arm, including an X-ray source and an image receptor mounted upon opposing locations, respectively on the C-arm. The image receptor includes a vacuum bottle type image intensifier. The image receptor is characterized by an absence of fiber optic device, and the image intensifier is characterized by an absence of micro channels therein. The C-arm is mass balanced about an axis of orbital rotation and is pivotally coupled to an articulating arm assembly supported upon a wheeled support base. The mass balance enables repositioning of the X-ray imaging system between an anterior-posterior view and an orthogonal lateral view with a single, orbital movement of the C-arm which also causes the views to define an imaging isocenter. The C-arm is preferably miniaturized to an approximate outside diameter of twenty-eight inches with a source-to-image distance of approximately fourteen inches.
摘要翻译：一种用于X射线诊断设备等的小型C型臂和成像装置。 X射线成像系统耦合到C臂，其包括分别安装在C臂上的相对位置的X射线源和图像接收器。图像接收器包括真空瓶型图像增强器。图像接收器的特征在于不存在光纤设备，并且图像增强器的特征在于其中不存在微通道。 C形臂围绕轨道旋转的轴线质量平衡，并且枢转地联接到支撑在轮式支撑基座上的关节臂组件。质量平衡使得能够通过C形臂的单一轨道运动在前后视图和正交侧视图之间重新定位X射线成像系统，这也导致视图限定成像等角点。 C形臂优选地小型化为大约二十八英寸的外部直径，源到图像距离大约为十四英寸。

2. 发明授权

US5617462A Automatic X-ray exposure control system and method of use 失效
标题翻译：自动X射线曝光控制系统及使用方法
公开(公告)号：US5617462A
公开(公告)日：1997-04-01
申请号：US512524
申请日：1995-08-07
申请人： R. Bruce Spratt
发明人： R. Bruce Spratt
IPC分类号： H05G1/30 , H05G1/36 , H05G1/60 , H05G1/64
CPC分类号： H05G1/60 , H05G1/30 , H05G1/36
摘要： An automatic X-ray exposure control system and method for adjusting the X-ray dose/technique of X-ray diagnostic equipment to ensure sufficient doses/techniques for proper imaging while minimizing levels of radiation contacting the patient. The system includes traditional X-ray sources to generate a X-rays and traditional X-ray receivers for developing an image of a piece of anatomy through which the X-rays have passed. A mechanism for analyzing the intensity of the image is disposed adjacent the X-ray receiver and opposite the X-ray source. Typically, the mechanism is a CCD video camera which provides two outputs, the first output being absolute brightness as recorded by the camera. The video is analyzed by a windowing circuit or similar device to select an area of the image and restrict further processing of the image to that area. Circuits analyze the windowed area to detect the peak brightness and the average brightness within the windowed area. A microprocessor mathematically combines the readings to obtain a single value characteristic of the density of the piece of anatomy imaged by the X-ray equipment. The microprocessor then compares this value with one or more predetermined exposure control tables; determines the ideal dose/technique for imaging and adjusts the X-ray source to achieve ideal exposure. Through efficient and automatic management, the microprocessor can adjust the X-ray technique rapidly, thus reducing exposure time of X-rays. Furthermore, automatic adjustment may select predetermined techniques that minimize dose, and that are less obvious to some operators.
摘要翻译：一种自动X射线曝光控制系统和方法，用于调节X射线诊断设备的X射线剂量/技术，以确保足够的剂量/技术进行适当的成像，同时最小化接触患者的辐射水平。该系统包括传统的X射线源以产生X射线和传统的X射线接收器，用于开发X射线已经通过的解剖结构的图像。用于分析图像的强度的机构设置在X射线接收机附近并与X射线源相对。通常，该机制是提供两个输出的CCD摄像机，第一个输出是由相机记录的绝对亮度。通过开窗电路或类似设备分析视频以选择图像的区域并限制图像进一步处理到该区域。电路分析窗口区域以检测窗口区域内的峰值亮度和平均亮度。微处理器以数学方式组合读数以获得由X射线设备成像的解剖结构片段的密度的单一值特性。然后微处理器将该值与一个或多个预定的曝光控制表进行比较; 确定成像的理想剂量/技术，并调整X射线源以实现理想的曝光。通过高效自动的管理，微处理器可以快速调整X射线技术，从而减少X射线的曝光时间。此外，自动调整可以选择使剂量最小化的预定技术，并且对于一些操作者来说不太明显。

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