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公开(公告)号：US5400384A
公开(公告)日：1995-03-21
申请号：US187106
申请日：1994-01-25
摘要： A method and apparatus employed in an X-ray apparatus for compensating for attenuation caused by a subject to perform an improved X-ray exposure. A table is created comprising entries accessible via power and attenuation values. Each of the entries includes a first value T representing a time for radiation in the system to reach a base ion count, and a second value C representing an offset ion count from the base ion count. A first set of entries in the table are referenced using a first power setting, and a first base ion count is determined based upon the first power setting, and a maximum radiation exposure is determined for the first power setting and a subject's mass. Then, an X-ray emitter is activated until a current ion count from a radiation sampling means has exceeded the base ion count or total radiation emitted has exceeded the maximum radiation allowed for the given mass of a subject. If the current radiation has exceeded the maximum radiation, then the X-ray emitter is deactivated and the process terminates. If the current ion count from the radiation sampling means has exceeded the base ion count, then it is determined whether the base ion count has been offset. If so, then the X-ray emitter is deactivated and the process terminates. If the base ion count has not been offset, then a matching entry is determined from the first set of entries which has the first value T less than or equal to the current exposure. Then, the second value C of the matching entry is added to the base ion count, and the process is repeated until the above conditions are matched.
摘要翻译： 一种在X射线设备中采用的方法和装置，用于补偿由被摄体引起的衰减以进行改进的X射线曝光。 创建一个表，其中包含可通过功率和衰减值访问的条目。 每个条目包括表示系统中达到基本离子计数的辐射时间的第一值T和表示基础离子计数的偏移离子计数的第二值C. 使用第一功率设置来参考表中的第一组条目，并且基于第一功率设置来确定第一基本离子计数，并且确定用于第一功率设置和被摄体质量的最大辐射曝光。 然后，X射线发射器被激活，直到来自辐射采样装置的当前离子计数超过基本离子计数，或者发射的总辐射已经超过给定质量的受试者允许的最大辐射。 如果当前辐射已经超过最大辐射，则X射线发射器被去激活，并且该过程终止。 如果来自辐射采样装置的当前离子计数超过基本离子计数，则确定基础离子计数是否已被抵消。 如果是这样，则X射线发射器被去激活，并且该过程终止。 如果基本离子计数尚未被偏移，则从具有小于或等于当前曝光的第一值T的第一组条目确定匹配条目。 然后，将匹配条目的第二值C加到基本离子计数中，并重复该处理直到上述条件匹配。
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公开(公告)号：US5333168A
公开(公告)日：1994-07-26
申请号：US11255
申请日：1993-01-29
摘要： A method and apparatus employed in an X-ray apparatus for compensating for attenuation caused by a subject to perform an improved X-ray exposure. A table is created comprising entries accessible via power and attenuation values. Each of the entries includes a first value T representing a time for radiation in the system to reach a base ion count, and a second value C representing an offset ion count from the base ion count. A first set of entries in the table are referenced using a first power setting, and a first base ion count is determined based upon the first power setting, and a maximum radiation exposure is determined for the first power setting and a subject's mass. Then, an X-ray emitter is activated until a current ion count from a radiation sampling means has exceeded the base ion count or total radiation emitted has exceeded the maximum radiation allowed for the given mass of a subject. If the current radiation has exceeded the maximum radiation, then the X-ray emitter is deactivated and the process terminates. If the current ion count from the radiation sampling means has exceeded the base ion count, then it is determined whether the base ion count has been offset. If so, then the X-ray emitter is deactivated and the process terminates. If the base ion count has not been offset, then a matching entry is determined from the first set of entries which has the first value T less than or equal to the current exposure. Then, the second value C of the matching entry is added to the base ion count, and the process is repeated until the above conditions are matched.
摘要翻译： 一种在X射线设备中采用的方法和装置，用于补偿由被摄体引起的衰减以进行改进的X射线曝光。 创建一个表，其中包含可通过功率和衰减值访问的条目。 每个条目包括表示系统中达到基本离子计数的辐射时间的第一值T和表示基础离子计数的偏移离子计数的第二值C. 使用第一功率设置来参考表中的第一组条目，并且基于第一功率设置来确定第一基本离子计数，并且确定用于第一功率设置和被摄体质量的最大辐射曝光。 然后，X射线发射器被激活，直到来自辐射采样装置的当前离子计数超过基本离子计数，或者发射的总辐射已经超过给定质量的受试者允许的最大辐射。 如果当前辐射已经超过最大辐射，则X射线发射器被去激活，并且该过程终止。 如果来自辐射采样装置的当前离子计数超过基本离子计数，则确定基础离子计数是否已被抵消。 如果是这样，则X射线发射器被去激活，并且该过程终止。 如果基本离子计数尚未被偏移，则从具有小于或等于当前曝光的第一值T的第一组条目确定匹配条目。 然后，将匹配条目的第二值C加到基本离子计数中，并重复该处理直到上述条件匹配。
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公开(公告)号：US07360100B2
公开(公告)日：2008-04-15
申请号：US10633063
申请日：2003-08-01
CPC分类号： H02J3/14 , H02J7/0068 , H02J9/061 , Y02B70/3291 , Y04S20/248
摘要： Certain embodiments of the present invention relate to a dynamic power management system. The system includes a power input providing power to an imaging system, measurement unit(s) for measuring current and/or voltage in the imaging system, and a power management controller allocating available power among components in the imaging system. The power management controller may allow a battery to charge at a maximum rate based on current used by the imaging system components. The measurement unit(s) may measure a voltage and a current for the power provided to the imaging system. The power management controller may control current drawn by the imaging system components. The system may also include a limit sensor for detecting when current consumption exceeds a certain limit. Additionally, the system may include at least one switching unit controlled by the power management controller. The switching unit(s) control an amount of power routed to imaging system components.
摘要翻译： 本发明的某些实施例涉及一种动态功率管理系统。 该系统包括向成像系统提供电力的功率输入，用于测量成像系统中的电流和/或电压的测量单元，以及在成像系统中的组件之间分配可用功率的功率管理控制器。 功率管理控制器可以基于成像系统组件使用的电流来允许电池以最大速率充电。 测量单元可以测量提供给成像系统的功率的电压和电流。 电源管理控制器可以控制由成像系统组件绘制的电流。 该系统还可以包括用于检测何时电流消耗超过一定限度的极限传感器。 另外，该系统可以包括由电力管理控制器控制的至少一个开关单元。 切换单元控制路由到成像系统组件的功率量。
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