公开(公告)号：US5566220A

公开(公告)日：1996-10-15

申请号：US378095

申请日：1995-01-25

申请人： Yasuo Saito ,  Mitsuru Yahata ,  Tadaharu Kobayashi ,  Masahiko Yamazaki

发明人： Yasuo Saito ,  Mitsuru Yahata ,  Tadaharu Kobayashi ,  Masahiko Yamazaki

IPC分类号： H01J35/14 ,  H05G1/26 ,  H05G1/52 ,  H01J35/00

CPC分类号： H05G1/26 ,  H01J35/14 ,  H05G1/52

摘要： In an X-ray computerized tomography apparatus, a water phantom is interposed between an X-ray tube unit and an X-ray detector in place of a subject under examination and a plurality of pieces of data detected by a plurality of X-ray detector elements are previously measured as a pieces of compensation data while shifting the X-focal point to different positions. Compensation data corresponding to the actual position of the X-ray focal point, which shifts according to the thermal state of the X-ray tube unit, is selected to correct detect data obtained for a subject under examination, permitting optimum compensation of variations in sensitivity among the X-ray detector elements for any position of the X-ray focal point, thereby preventing a ring-like artifact from being produced on a tomography image.

摘要翻译： 在X射线计算机断层摄影装置中，代替受检对象，在X射线管单元和X射线检测器之间插入水体，并且由多个X射线检测器检测出多个数据 元素先前被测量为一块补偿数据，同时将X焦点移动到不同的位置。 选择与根据X射线管单元的热状态移动的X射线焦点的实际位置对应的补偿数据，以校正对被检查对象获得的检测数据，从而允许对灵敏度变化的最佳补偿 在用于X射线焦点的任何位置的X射线检测器元件中，从而防止在断层摄影图像上产生环状假象。

公开(公告)号：US5226064A

公开(公告)日：1993-07-06

申请号：US908545

申请日：1992-06-30

申请人： Mitsuru Yahata ,  Shigeru Tanaka

发明人： Mitsuru Yahata ,  Shigeru Tanaka

IPC分类号： H05G1/10 ,  H05G1/20 ,  H05G1/26

CPC分类号： H05G1/26 ,  H05G1/10 ,  H05G1/20

摘要： In a CT (computerized tomographic) scanning apparatus, a biological body under medical examination is scanned to acquire image data on the scanned body, whereby a computerized tomographic image of the scanned body is reconstructed by processing the acquired image data. The CT scanning apparatus comprises: an AC/DC converting unit for converting AC (alternating current) power supplied from a commercial power source into first DC (direct current) power; a peak power consumption unit for consuming peak power during a scanning operation; and a secondary battery unit rechargeable by the first DC power supplied from the AC/DC converting unit and capable of supplying second DC power to the peak power consumption unit during at least the scanning operation.

摘要翻译： 在CT（计算机断层扫描）扫描装置中，扫描体检下的生物体以获取扫描体上的图像数据，由此通过处理所获取的图像数据来重建扫描体的计算机断层图像。 CT扫描装置包括：AC / DC转换单元，用于将从商用电源提供的AC（交流）电力转换为第一DC（直流）电力; 用于在扫描操作期间消耗峰值功率的峰值功率消耗单元; 以及二次电池单元，其通过从AC / DC转换单元提供的第一DC电力可充电，并且能够在至少扫描操作期间向峰值功率消耗单元提供第二DC电力。

公开(公告)号：US5148459A

公开(公告)日：1992-09-15

申请号：US807645

申请日：1991-12-16

申请人： Mitsuru Yahata

发明人： Mitsuru Yahata

IPC分类号： H01R4/64 ,  H02M1/00 ,  H05G1/08 ,  H05G1/20 ,  H05G1/54 ,  H05G2/00

CPC分类号： H05G1/20 ,  H05G1/08 ,  H05G1/54

摘要： In a power source device for X-ray system, circuit units are mounted on chassises, respectively and chassises are fixed in a casing and are electrically insulated from the casing by insulative members. The circuit units are electrically connected through a cable to a ground terminal of the casing which is connected to the ground. The chassises are also connected through a cable to a ground terminal of a panel board which is connected to the ground.

摘要翻译： 在X射线系统的电源装置中，电路单元分别安装在壳体上，并且壳体固定在壳体中并且通过绝缘构件与壳体电绝缘。 电路单元通过电缆电连接到连接到地面的壳体的接地端子。 还可以通过电缆将盒装连接到连接到地面的面板的接地端子。

公开(公告)号：US07291844B2

公开(公告)日：2007-11-06

申请号：US11280373

申请日：2005-11-16

申请人： Mitsuru Yahata ,  Haruo Kurochi ,  Masaya Kumazaki ,  Kentaro Ogata ,  Takuji Sawaya

发明人： Mitsuru Yahata ,  Haruo Kurochi ,  Masaya Kumazaki ,  Kentaro Ogata ,  Takuji Sawaya

IPC分类号： G01T1/20

CPC分类号： G01T1/1644 ,  G01T1/2018

摘要： The present invention provides a detector which suppress the crosstalk between detector cells while improving the acquisition efficiency of X-ray radiation. The detector includes a plurality of detector cells, arranged along a detection plane of X-ray, in which each detector cell has a scintillator unit made of a scintillator, and a photodiode for transduce the light incoming from the scintillator unit into electric signals. The scintillator units are partitioned each from another by the border, which has a groove extending in the channel and row directions. A scintillator is provided in some part of the border in the incident X-ray direction.

摘要翻译： 本发明提供了一种在提高X射线辐射的采集效率的同时抑制检测器单元之间的串扰的检测器。 检测器包括沿着X射线检测平面布置的多个检测器单元，其中每个检测器单元具有由闪烁体制成的闪烁体单元和用于将从闪烁器单元进入的光转换成电信号的光电二极管。 闪烁体单元通过边界分隔开，边界具有在通道和行方向上延伸的凹槽。 在入射X射线方向上的边界的某些部分设置闪烁体。

公开(公告)号：US5469429A

公开(公告)日：1995-11-21

申请号：US246665

申请日：1994-05-20

申请人： Masahiko Yamazaki ,  Yutaka Shibata ,  Kozi Natori ,  Mitsuru Yahata ,  Kyojiro Nambu

发明人： Masahiko Yamazaki ,  Yutaka Shibata ,  Kozi Natori ,  Mitsuru Yahata ,  Kyojiro Nambu

IPC分类号： H01J35/24 ,  H05G1/26 ,  H05G1/52 ,  A61B6/00

CPC分类号： H05G1/26 ,  H01J35/24 ,  H05G1/52 ,  A61B6/583

摘要： An X-ray computerized tomographic (CT) apparatus capable of facilitating alignment of focal spot position at the time of replacing an X-ray tube anew and capable of easily correcting the focal spot position even when the focal spot position of the X-ray tube is deviated. Thereby, the focal spot position of the X-ray tube remains fixed in a predetermined position. The X-ray computerized tomographic (CT) apparatus includes an X-ray tube which is freely movable in at least one of a horizontal direction and a vertical direction; a detection unit for detecting a dislocated degree of the focal spot position of the X-ray tube; and a controlling unit for automatically controlling the focal spot position of the X-ray tube based on data obtained from the detection unit so that the focal spot position of the X-ray tube remains fixed in a predetermined position. In a case where the CT apparatus is used for a helical scanning operation, the detection unit may further include a detection timing controller for controlling an instance of detection and alignment of the focal spot position by utilizing only an output of the X-ray amount detected at a predetermined position of a gantry.

摘要翻译： 一种X射线计算机断层摄影（CT）装置，其能够在更换新的X射线管时有助于焦点位置的对准，并且即使当X射线管的焦斑位置也能够容易地校正焦斑位置 偏离了 因此，X射线管的焦点位置保持固定在预定位置。 X射线计算机断层摄影（CT）装置包括可在水平方向和垂直方向中的至少一个中自由移动的X射线管; 检测单元，用于检测X射线管的焦斑位置的脱位程度; 以及控制单元，用于根据从检测单元获得的数据自动控制X射线管的焦点位置，使得X射线管的焦点位置保持固定在预定位置。 在CT装置用于螺旋扫描操作的情况下，检测单元还可以包括检测定时控制器，用于仅利用检测到的X射线量的输出来控制焦点位置的检测和对准的情况 在台架的预定位置。

公开(公告)号：US4761804A

公开(公告)日：1988-08-02

申请号：US66020

申请日：1987-06-24

申请人： Mitsuru Yahata

发明人： Mitsuru Yahata

IPC分类号： H05G1/34 ,  H05G1/20 ,  H05G1/32 ,  H05G1/56

CPC分类号： H05G1/32 ,  H05G1/20 ,  H05G1/56

摘要： A high DC voltage generator for an X-ray tube includes a low voltage rectifier for rectifying a low AC input voltage to produce a low DC voltage, a DC-to-DC converter for converting the low DC voltage into a high DC voltage for the X-ray tube, and a controller for controlling transition characteristics of turning-on and off the X-ray tube. The controller shortens a rising time period of the high DC voltage until a rating anode voltage is applied to the X-ray tube after turn-on operation.

摘要翻译： 用于X射线管的高直流电压发生器包括用于整流低交流输入电压以产生低直流电压的低压整流器，用于将低直流电压转换成高直流电压的DC-DC转换器，用于 X射线管，以及用于控制X射线管的接通和断开的过渡特性的控制器。 控制器缩短高直流电压的上升时间，直到额定负极电压在接通操作后施加到X射线管。

公开(公告)号：US4734924A

公开(公告)日：1988-03-29

申请号：US917078

申请日：1986-10-08

申请人： Mitsuru Yahata ,  Hidetoshi Kudo

发明人： Mitsuru Yahata ,  Hidetoshi Kudo

IPC分类号： H05G1/46 ,  H05G1/54 ,  H05G1/26

CPC分类号： H05G1/46 ,  H05G1/54

摘要： The anode and cathode of an X-ray tube are connected to a high-voltage power source respectively, through corresponding tetrode tubes, and the center metal electrode of the X-ray tube is grounded. The tetrode tubes are simultaneously turned on and off upon receipt of a control signal. An abnormal current, which flows through the center metal electrode due to a short-circuiting fault of the tetrode tube connected to the cathode of the X-ray tube, is detected during an OFF period of the tetrode tubes. Upon detection of the abnormal current, the tetrode tube connected to the anode of the X-ray tube is forcedly turned on, thus preventing the fusion of the center metal electrode in the X-ray tube.

摘要翻译： X射线管的阳极和阴极分别通过相应的四极管连接到高压电源，并且X射线管的中心金属电极接地。 在接收到控制信号时，四极管同时被打开和关闭。 在四极管的断开期间检测由于连接到X射线管的阴极的四极管的短路故障而流经中心金属电极的异常电流。 在检测到异常电流时，连接到X射线管的阳极的四极管被强制地接通，从而防止了X射线管中的中心金属电极的融合。

公开(公告)号：US07580501B2

公开(公告)日：2009-08-25

申请号：US11214503

申请日：2005-08-30

申请人： Akira Hagiwara ,  Makoto Gohno ,  Mitsuru Yahata

发明人： Akira Hagiwara ,  Makoto Gohno ,  Mitsuru Yahata

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T2211/421

摘要： A CT image reconstruction method includes substituting other projection data, which has a predetermined positional relationship to projection data that is found defective during scanning, for the defective data, and interpolating back projection data using a value and information on a scanned position that are contained in the substitute data.

摘要翻译： CT图像重建方法包括将与扫描期间发现有缺陷的投影数据具有预定位置关系的其他投影数据替换为缺陷数据，并且使用包含在扫描位置中的值和信息内插反投影数据 替代数据。

公开(公告)号：US20070235654A1

公开(公告)日：2007-10-11

申请号：US11280373

申请日：2005-11-16

申请人： Mitsuru Yahata ,  Haruo Kurochi ,  Masaya Kumazaki ,  Kentaro Ogata ,  Takuji Sawaya

发明人： Mitsuru Yahata ,  Haruo Kurochi ,  Masaya Kumazaki ,  Kentaro Ogata ,  Takuji Sawaya

IPC分类号： G01T1/24

CPC分类号： G01T1/1644 ,  G01T1/2018

摘要： The present invention provides a detector which suppress the crosstalk between detector cells while improving the acquisition efficiency of X-ray radiation. The detector includes a plurality of detector cells, arranged along a detection plane of X-ray, in which each detector cell has a scintillator unit made of a scintillator, and a photodiode for transduce the light incoming from the scintillator unit into electric signals. The scintillator units are partitioned each from another by the border, which has a groove extending in the channel and row directions. A scintillator is provided in some part of the border in the incident X-ray direction.

摘要翻译： 本发明提供了一种在提高X射线辐射的采集效率的同时抑制检测器单元之间的串扰的检测器。 检测器包括沿着X射线检测平面布置的多个检测器单元，其中每个检测器单元具有由闪烁体制成的闪烁体单元和用于将从闪烁器单元进入的光转换成电信号的光电二极管。 闪烁体单元通过边界分隔开，边界具有在通道和行方向上延伸的凹槽。 在入射X射线方向上的边界的某些部分设置闪烁体。

公开(公告)号：US07263158B2

公开(公告)日：2007-08-28

申请号：US11431036

申请日：2006-05-09

申请人： Yasuhiro Imai ,  Akihiko Nishide ,  Mitsuru Yahata ,  Masaya Kumazaki

发明人： Yasuhiro Imai ,  Akihiko Nishide ,  Mitsuru Yahata ,  Masaya Kumazaki

IPC分类号： G01N23/08

CPC分类号： A61B6/032 ,  A61B6/027 ,  G01N2223/03 ,  G01N2223/204 ,  G01N2223/501 ,  G01T1/2985

摘要： With the object of realizing an X-ray CT apparatus which performs a plurality of pieces of imaging small in resolution degradation too simultaneously while suppressing an expansion of a data acquisition section that receives an electric signal of an X-ray detector, such an array that X-ray detectors in a channel direction are operated with the two as one pair is made by first detector switching means of a switching unit. This array moved by one X-ray detector in the channel direction is alternately repeated in the row or channel direction. Therefore, even when the number of receivers is small, data extending over a wide imaging range can simultaneously be collected while the degradation of resolution is being suppressed to a minor degree. By extension, imaging more coincident with an operator-aimed image can be done by making the switching use of imaging in high resolution.

摘要翻译： 为了实现在同时抑制接收X射线检测器的电信号的数据采集部的扩展的同时执行分辨率降低的多个成像的X射线CT装置，其目的在于， X射线检测器在通道方向上操作，两者一对由切换单元的第一检测器切换装置制成。 通过一个X射线检测器在通道方向移动的该阵列在行或通道方向上交替重复。 因此，即使当接收机的数量少时，也可以同时收集在宽的成像范围内延伸的数据，同时在较小程度上抑制分辨率的降低。 通过扩展，可以通过以高分辨率开关成像来实现与操作者目标图像更相符的成像。