公开(公告)号：US08369643B2

公开(公告)日：2013-02-05

申请号：US12457983

申请日：2009-06-26

申请人： Takao Kuwabara ,  Tomoko Taki

发明人： Takao Kuwabara ,  Tomoko Taki

IPC分类号： G06K9/40 ,  G06K9/32

CPC分类号： G06T5/002 ,  G06T2207/10116 ,  G06T2207/30004

摘要： The amount of time spent extracting linear noise components is reduced, when removing linear noise components from an image. A reduced image is generated, by reducing a radiation image in at least one of the vertical and horizontal directions. A linear noise image that represents linear noise components in the Y direction is generated, by extracting linear noise components from the reduced image. Thereafter, the generated linear noise image is enlarged to the image size of the original image; the linear noise components are removed from the radiation image, employing the enlarged linear noise image.

公开(公告)号：US08249322B2

公开(公告)日：2012-08-21

申请号：US12458624

申请日：2009-07-17

申请人： Takao Kuwabara ,  Hideyuki Yamada

发明人： Takao Kuwabara ,  Hideyuki Yamada

IPC分类号： G06K9/00

CPC分类号： H04N5/3658 ,  H04N5/32

摘要： A method for use with a radiation image detector, including the steps of detecting a faulty signal line having a signal amount less than a predetermined threshold value based on radiation image signals read out from the detector, setting a signal line adjacent to the faulty signal line as an abnormal signal line and a signal line adjacent to the abnormal signal line and having a normal amount of signal as a reference signal line, calculating the difference between a signal read out by the abnormal signal line and a signal read out by the reference signal line as a correction amount, calculating a low frequency component correction amount by removing a high frequency component from the calculated correction amount, and performing a correction on the signal read out by the abnormal signal line by adding the calculated low frequency component correction amount to the signal.

摘要翻译： 一种与放射线图像检测器一起使用的方法，包括以下步骤：基于从检测器读出的放射线图像信号检测信号量小于预定阈值的故障信号线，设置与故障信号线相邻的信号线 作为异常信号线和与异常信号线相邻并且具有正常信号量作为参考信号线的信号线，计算由异常信号线读出的信号与由参考信号读出的信号之间的差异 线作为校正量，通过从计算出的校正量中去除高频分量来计算低频分量校正量，并且对由异常信号线读出的信号进行校正，将计算出的低频分量校正量加到 信号。

公开(公告)号：US20120082295A1

公开(公告)日：2012-04-05

申请号：US13200860

申请日：2011-10-04

申请人： Toshitaka Agano ,  Takao Kuwabara

发明人： Toshitaka Agano ,  Takao Kuwabara

IPC分类号： G01N23/04

CPC分类号： A61B6/405 ,  A61B6/482 ,  A61B6/5229 ,  A61B6/5258

摘要： There is provided a radiographic imaging apparatus including: a radiation source configured to separately emit high energy radiation and low energy radiation by virtue of inverse Compton scattering; an imaging section configured to separately capture a radiographic image with the high energy radiation and a radiographic image with the low energy radiation that are emitted from the radiation source onto a same site to be imaged; and an image processing section configured to perform image processing in which an energy subtraction image is produced by performing a weighting calculation such that the radiographic image captured with the high energy radiation and the radiographic image captured with the low energy radiation by the imaging section are weighted for corresponding pixels according to a distance from a center of the radiation emitted from the radiation source.

摘要翻译： 提供了一种放射线照相成像设备，包括：辐射源，被配置为通过逆康普顿散射分开地发射高能量辐射和低能量辐射; 成像部，其被配置为分离地捕获具有高能量辐射的放射线照相图像和具有从辐射源发射到待成像的同一位置的具有低能量辐射的放射线照相图像; 以及图像处理部，被配置为执行图像处理，其中通过执行加权计算来产生能量减影图像，使得以高能量辐射拍摄的放射线图像和由成像部分用低能量辐射捕获的放射线照相图像被加权 根据与从辐射源发射的辐射的中心的距离的对应像素。

公开(公告)号：US20120051502A1

公开(公告)日：2012-03-01

申请号：US13219529

申请日：2011-08-26

申请人： Yasunori OHTA ,  Wataru Ito ,  Masahiko Yamada ,  Takao Kuwabara ,  Takeshi Kamiya ,  Tetsuro Kusunoki

发明人： Yasunori OHTA ,  Wataru Ito ,  Masahiko Yamada ,  Takao Kuwabara ,  Takeshi Kamiya ,  Tetsuro Kusunoki

IPC分类号： A61B6/04

CPC分类号： A61B6/502 ,  A61B6/00 ,  A61B6/022 ,  A61B6/107 ,  A61B6/405 ,  A61B6/4452 ,  A61B6/4476

摘要： In a mammography system including a face guard, it is possible to prevent a human subject whose head is in close contact with the face guard from losing her posture and being in an unstable state. In a mammography system which includes a shield member for preventing radiation from being irradiated onto the face of the human subject, a radiation source which irradiates radiation is moved, such that, when radiation in two radiographing directions is irradiated from two focal positions distant from the chest wall of the human subject in a forward direction, the shield member is configured to be fixed at a predetermined position in the forward direction without being interlocking with the movement of the radiation source.

摘要翻译： 在包括脸部护理的乳房造影系统中，能够防止头部与脸部护罩紧密接触的人体对象失去其姿势而处于不稳定状态。 在包括用于防止辐射照射到人体对象的遮蔽部件的乳房摄影系统中，照射辐射的辐射源被移动，使得当两个放射线方向上的辐射从远离 人体受试者的前方向的胸壁，屏蔽构件被构造成在向前方向上固定在预定位置，而不与辐射源的移动互锁。

公开(公告)号：US20090324123A1

公开(公告)日：2009-12-31

申请号：US12457983

申请日：2009-06-26

申请人： Takao Kuwabara ,  Tomoko Taki

发明人： Takao Kuwabara ,  Tomoko Taki

IPC分类号： G06K9/40 ,  G06K9/32

CPC分类号： G06T5/002 ,  G06T2207/10116 ,  G06T2207/30004

摘要： The amount of time spent extracting linear noise components is reduced, when removing linear noise components from an image. A reduced image is generated, by reducing a radiation image in at least one of the vertical and horizontal directions. A linear noise image that represents linear noise components in the Y direction is generated, by extracting linear noise components from the reduced image. Thereafter, the generated linear noise image is enlarged to the image size of the original image; the linear noise components are removed from the radiation image, employing the enlarged linear noise image.

摘要翻译： 当从图像中去除线性噪声分量时，降低了提取线性噪声分量的时间量。 通过减少垂直和水平方向中的至少一个的辐射图像来产生缩小的图像。 通过从缩小图像中提取线性噪声分量，生成表示Y方向的线性噪声分量的线性噪声图像。 此后，生成的线性噪声图像被放大到原始图像的图像大小; 使用放大的线性噪声图像，从辐射图像中去除线性噪声分量。

公开(公告)号：US07072744B2

公开(公告)日：2006-07-04

申请号：US11139876

申请日：2005-05-31

申请人： Takao Kuwabara

发明人： Takao Kuwabara

IPC分类号： G05D11/00 ,  G05D17/00 ,  G05D31/12 ,  G05D5/00 ,  G05D9/00 ,  G05D7/00 ,  F01D1/12 ,  F04D5/00

CPC分类号： F03B15/005 ,  Y02E10/223 ,  Y02E10/226

摘要： In a turbine apparatus comprising a runner rotatable to be rotationally driven by a water, a gain of a derivative calculation element generating a derivative component of a control signal for controlling a flow rate of the water which derivative component is to be applied to the derivative calculation element and the integration calculation element by performing differentiation on a difference between an actual rotational speed and a desired rotational speed of the runner with respect to a time proceeding has a value sufficiently increased to converge a value of the control signal toward a desired value in accordance with the time proceeding in S-characteristic portion.

摘要翻译： 在包括可旋转地由水旋转驱动的转轮的涡轮机装置中，导数计算元件的增益产生控制信号的导数分量，用于控制将导数分量应用于导数计算的水的流量 元素和积分计算元素相对于时间进行对实际旋转速度和转轮的期望旋转速度之间的差进行微分，具有充分增加的值，以使控制信号的值根据期望值收敛 随着时间在S特征部分中进行。

公开(公告)号：US20050267644A1

公开(公告)日：2005-12-01

申请号：US11139876

申请日：2005-05-31

申请人： Takao Kuwabara

发明人： Takao Kuwabara

IPC分类号： F03B3/10 ,  F03B3/18 ,  F03B15/00 ,  F03B15/04 ,  G06F17/00

CPC分类号： F03B15/005 ,  Y02E10/223 ,  Y02E10/226

摘要： In a turbine apparatus comprising a runner rotatable to be rotationally driven by a water, a gain of a derivative calculation element generating a derivative component of a control signal for controlling a flow rate of the water which derivative component is to be applied to the derivative calculation element and the integration calculation element by performing differentiation on a difference between an actual rotational speed and a desired rotational speed of the runner with respect to a time proceeding has a value sufficiently increased to converge a value of the control signal toward a desired value in accordance with the time proceeding in S-characteristic portion.

摘要翻译： 在包括可旋转地由水旋转驱动的转轮的涡轮机装置中，导数计算元件的增益产生控制信号的导数分量，用于控制将导数分量应用于导数计算的水的流量 元素和积分计算元素相对于时间进行对实际旋转速度和转轮的期望旋转速度之间的差进行微分，具有充分增加的值，以使控制信号的值根据期望值收敛 随着时间在S特征部分中进行。

公开(公告)号：US06828539B1

公开(公告)日：2004-12-07

申请号：US09472954

申请日：1999-12-27

申请人： Takao Kuwabara

发明人： Takao Kuwabara

IPC分类号： H01L2700

CPC分类号： H01L27/14601 ,  H01L27/14806

摘要： In the state where X-rays are not projected, image signals S1 are read out from a detector 1, and the values of these image signals S1 are stored as offset correction values in a correction table 16. The detector 1 is then irradiated with X-rays having a maximum dose of radiation to determine the gain correction values at which all the values of signals S3, which are the image signals S1 after the correction, are at a maximum value which can be taken as the signal value after the correction, and these values are stored in the correction table 16. Then, a subject is actually photographed to obtain image signals S1, and the image signals S1 are corrected for the offsets and gains by an offset adjusting means 11 and an AGC amplifier, on the basis of the offset correction values and the gain correction values stored in the correction table 16.

摘要翻译： 在未投射X射线的状态下，从检测器1读出图像信号S1，将这些图像信号S1的值作为偏移校正值存储在校正表16中。然后用X 具有最大辐射剂量的数据，以确定增益校正值，在该增益校正值下，作为校正之后的图像信号S1的信号S3的所有值处于可被作为校正后的信号值的最大值， 并且这些值被存储在校正表16中。然后，实际上拍摄对象以获得图像信号S1，并且基于偏移调整装置11和AGC放大器对图像信号S1进行偏移和增益的校正 的偏移校正值和存储在校正表16中的增益校正值。

公开(公告)号：US06703959B2

公开(公告)日：2004-03-09

申请号：US10230165

申请日：2002-08-29

申请人： Takao Kuwabara

发明人： Takao Kuwabara

IPC分类号： H03M112

CPC分类号： H04N5/3575 ,  G01N23/04 ,  H04N5/32 ,  H04N5/357 ,  H04N5/374

摘要： In a signal detecting method of repeating the processes of initiating accumulation of charge signals by switching an integrating amplifier to an accumulator mode, retaining a first electric signal outputted from the integrating amplifier immediately after switching to the accumulator mode, finding a difference as a signal component between a second electric signal outputted from the integrating amplifier immediately before switching to a reset mode after completing accumulation of the charge signals and the first electric signal, and converting and outputting the signal component into a digital signal. Here, the signal component concerning a first charge signal is retained by second signal retaining means and then converted into the digital signal. Further, the integrating amplifier is switched to the accumulator mode after completing accumulation concerning the first charge signal but before completing conversion into the digital signal to initiate accumulation concerning a second charge signal.

摘要翻译： 在通过将积分放大器切换到累加器模式来重复开始充电信号的累积的处理的信号检测方法中，在切换到累加器模式之后立即保持从积分放大器输出的第一电信号作为信号分量 在完成积累充电信号和第一电信号之后切换到复位模式之前从积分放大器输出的第二电信号之间，并将信号分量转换并输出为数字信号。 这里，关于第一充电信号的信号分量由第二信号保持装置保持，然后转换成数字信号。 此外，在完成关于第一充电信号的累积之后，但是在完成转换成数字信号之前，积分放大器切换到累加器模式，以启动关于第二充电信号的累加。

公开(公告)号：US06515286B2

公开(公告)日：2003-02-04

申请号：US09834887

申请日：2001-04-16

申请人： Takao Kuwabara

发明人： Takao Kuwabara

IPC分类号： H01L2700

CPC分类号： G01T1/2928 ,  G01T1/2018

摘要： In a radiation detector: a CsI:Tl (or CsI:Na) scintillator receives a number X of radiation quantums for each pixel, and emits a number L of photons constituting fluorescent light in response to each radiation quantum; photoelectric converters containing Si (or Se) as a main component are arranged corresponding to respective pixels to receive the fluorescent light with an entrance efficiency T, and generate charges when the fluorescent light is detected; and a capacitor is connected to each photoelectric converter, and stores the charges generated by the photoelectric converter. When the radiation detector receives a 10 to 300 mR dose of the radiation, the numbers X and L, the entrance efficiency T, the fill factor F and the photoelectric conversion efficiency &eegr; of each photoelectric converter, and the maximum storable charge amount Q of the capacitor satisfy a relationship X·L·T·F·&eegr;≦Q.

摘要翻译： 在辐射检测器中：CsI：T1（或CsI：Na）闪烁体接收每个像素的数量X的辐射量子，响应于每个辐射量子发射构成荧光的数量L的光子; 以Si（或Se）为主要成分的光电转换器对应于各像素排列以接收具有入射效率T的荧光，并在检测到荧光时产生电荷; 并且电容器连接到每个光电转换器，并且存储由光电转换器产生的电荷。 当辐射检测器接收到10〜300mR的辐射量时，每个光电转换器的数量X和L，入射效率T，填充因子F和光电转换效率eta以及最大可存储电荷量Q 电容满足关系XLTFeta <= Q。