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Patent Agency Ranking
公开(公告)号：US07440547B2
公开(公告)日：2008-10-21
申请号：US11402845
申请日：2006-04-13
Applicant: Fumio Ishiyama
Inventor： Fumio Ishiyama
CPC classification number: H05G1/30 , A61B6/032 , A61B6/4014 , H01J23/065 , H01J35/045
Abstract: A CT scanner which collects X-ray projection data of a subject and which generates an image in the subject from the projection data, the CT scanner includes tubes which emit X-rays and which include grids to switch emission and stoppage of the X-rays, a unit which generates a high voltage to be supplied to the tubes, a cable which sends the high voltage to each of the tubes, circuits which change potentials of the grids arranged in the tubes, respectively, a control unit which controls the circuits to switch the emission and the stoppage of the X-rays in a pulse manner while the tubes rotate around the subject, detectors arranged to face the tubes, respectively, and a unit which validates an output signal from the detector facing the tube emitting the X-rays and which invalidates an output signal from the detector facing the tube stopping the emission of the X-rays.
Abstract translation: 一种CT扫描器，其收集被摄体的X射线投影数据并从投影数据生成被摄体中的图像，CT扫描器包括发射X射线的管，其包括用于切换X射线的发射和停止的网格 产生向管供给的高电压的单元，分别向每个管发送高压的电缆，改变设置在管中的电网的电位的电路，控制单元，其控制电路 当管绕着被摄体旋转时，以脉冲方式切换X射线的发射和停止，分别布置成面对管的检测器和用于验证来自检测器的输出信号的单元，所述检测器面向发射X射线的管的输出信号， 并且使来自检测器的输出信号无效，所述检测器面向管阻止X射线的发射。
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公开(公告)号：US20060233297A1
公开(公告)日：2006-10-19
申请号：US11402845
申请日：2006-04-13
Applicant: Fumio Ishiyama
Inventor： Fumio Ishiyama
CPC classification number: H05G1/30 , A61B6/032 , A61B6/4014 , H01J23/065 , H01J35/045
Abstract: A CT scanner which collects X-ray projection data of a subject and which generates an image in the subject from the projection data, the CT scanner includes tubes which emit X-rays and which include grids to switch emission and stoppage of the X-rays, a unit which generates a high voltage to be supplied to the tubes, a cable which sends the high voltage to each of the tubes, circuits which change potentials of the grids arranged in the tubes, respectively, a control unit which controls the circuits to switch the emission and the stoppage of the X-rays in a pulse manner while the tubes rotate around the subject, detectors arranged to face the tubes, respectively, and a unit which validates an output signal from the detector facing the tube emitting the X-rays and which invalidates an output signal from the detector facing the tube stopping the emission of the X-rays.
Abstract translation: 一种CT扫描器，其收集被摄体的X射线投影数据并从投影数据生成被摄体中的图像，CT扫描器包括发射X射线的管，其包括用于切换X射线的发射和停止的网格 产生向管供给的高电压的单元，分别向每个管发送高压的电缆，改变设置在管中的电网的电位的电路，控制单元，其控制电路 当管绕着被摄体旋转时，以脉冲方式切换X射线的发射和停止，分别布置成面对管的检测器和用于验证来自检测器的输出信号的单元，所述检测器面向发射X射线的管的输出信号， 并且使来自检测器的输出信号无效，所述检测器面向管阻止X射线的发射。
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公开(公告)号：US08983026B2
公开(公告)日：2015-03-17
申请号：US13415309
申请日：2012-03-08
Applicant: Fumio Ishiyama
Inventor： Fumio Ishiyama
Abstract: An X-ray tube and an X-ray detector are arranged opposing one another. X-rays are irradiated from the X-ray tube by revolving around the subject. An X-ray image is obtained based on the X-rays that penetrate the subject and are detected by the X-ray detector. The high voltage generator has an inverter that supplies a voltage to the X-ray tube by switching to a predetermined operating frequency during revolution of the X-ray tube. Regarding the frequency adjustable part, the operating frequency of the inverter is adjustable such that it is a multiple of the collection rate, which is the number of X-ray images obtained per one revolution of the X-ray tube. The timing generator may adjust the voltage supplied to the X-ray tube at a timing synchronized with the operating frequency of the inverter.
Abstract translation: X射线管和X射线检测器彼此相对布置。 通过旋转对象来从X射线管照射X射线。 基于穿透被检体并通过X射线检测器检测的X射线获得X射线图像。 高压发生器具有逆变器，其在X射线管旋转期间切换到预定的工作频率，向X射线管提供电压。 关于频率可调部分，变频器的工作频率是可调节的，它是采集速率的倍数，这是X射线管每转一圈获得的X射线图像的数量。 定时发生器可以在与逆变器的工作频率同步的定时调节提供给X射线管的电压。
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公开(公告)号：US4797908A
公开(公告)日：1989-01-10
申请号：US773208
申请日：1985-09-06
Applicant: Shigeru Tanaka , Fumio Ishiyama
Inventor： Shigeru Tanaka , Fumio Ishiyama
Abstract: A power supply circuit of voltage resonance type for supplying a high DC voltage to an X-ray tube includes a transformer, a capacitor for forming a resonance circuit in cooperation with a primary winding of the transformer, and a rectifier circuit coupled with a secondary winding of the transformer for supplying a high DC voltage to the x-ray tube. At the beginning of the operation of the power supply circuit, a great change of resonance conditions is offset to quicken the rise of the X-ray tube voltage. To this end, a power supply drive circuit to enable (turn on) the switches is arranged to prevent the switches from being enabled before one cycle of the resonance current in the resonance circuit is completed.
Abstract translation: 用于向X射线管提供高直流电压的电压谐振型电源电路包括变压器，用于与变压器的初级绕组协调形成谐振电路的电容器以及与次级绕组耦合的整流电路 用于向x射线管提供高直流电压的变压器。 在电源电路运行开始时，谐振条件的极大变化抵消了X射线管电压的升高。 为此，布置使得能够（接通）开关的电源驱动电路，以防止在谐振电路中的谐振电流的一个周期完成之前开关被使能。
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5.发明授权X-ray generator comprising switching voltage regulator to reduce harmonic current components for supplying constant power 失效X射线发生器包括切换电压调节器以减少用于提供恒定功率的谐波电流分量
公开(公告)号：US5034973A
公开(公告)日：1991-07-23
申请号：US466595
申请日：1990-01-17
Applicant: Fumio Ishiyama
Inventor： Fumio Ishiyama
Abstract: In a voltage generating system for an X-ray diagnosis apparatus, a smoothing filter is arranged between a rectifying circuit connected to an AC power source and a smoothing capacitor. In the smoothing filter, by a switching operation for a current from the rectifying circuit, a power source voltage and a current are of in-phase, and harmonic components included in the current can be eliminated. When a current limiting circuit and a smoothing capacitor are used in place of the smoothing filter, a voltage supplied to a DC-DC converter is set to be constant.
Abstract translation: 在用于X射线诊断装置的电压产生系统中，在连接到AC电源的整流电路和平滑电容器之间设置平滑滤波器。 在平滑滤波器中，通过来自整流电路的电流的切换动作，电源电压和电流是同相的，并且可以消除包含在电流中的谐波分量。 当使用限流电路和平滑电容器代替平滑滤波器时，提供给DC-DC转换器的电压被设定为恒定。
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