公开(公告)号：US20110206185A1

公开(公告)日：2011-08-25

申请号：US13126780

申请日：2008-10-30

申请人： Takihito Sakai ,  Takayuki Sano

发明人： Takihito Sakai ,  Takayuki Sano

IPC分类号： G01N23/04

CPC分类号： A61B6/06 ,  A61B6/4021 ,  A61B6/4429 ,  A61B6/4452 ,  A61B6/487 ,  A61B6/5241

摘要： This invention has one object to provide radiographic apparatus for acquiring a radioscopic image through superimposing of strip images. The radiographic apparatus allows prevention of blurring in the image with shortened imaging time for acquiring a clearer radioscopic image. According to the configuration of this invention, the FPD-4 is entirely within an imaging range throughout continuous taking of the strip images. In so doing, a minimum movement distance of the FPD-4 may be achieved in continuous taking of the strip images. Even when movement of the FPD-4 deviates from original setting, a range of the deviation may be suppressed to be small, since the movement distance of the FPD-4 is suppressed to be small. Consequently, superimposing of the strip images may realize acquisition of a clearer radioscopic image.

摘要翻译： 本发明的一个目的是提供一种放射线照相装置，用于通过叠加带状图像来获取放射线图像。 射线照相设备允许以缩短的成像时间来防止图像中的模糊，以获得更清晰的放射线图像。 根据本发明的结构，FPD-4在连续拍摄条形图像时完全在成像范围内。 在这样做时，可以在连续拍摄条形图像时实现FPD-4的最小移动距离。 即使当FPD-4的移动偏离原始设置时，由于FPD-4的移动距离被抑制得较小，所以可以将偏差的范围抑制得较小。 因此，叠加条形图像可以实现更清晰的放射线图像的获取。

公开(公告)号：US08837671B2

公开(公告)日：2014-09-16

申请号：US13126780

申请日：2008-10-30

申请人： Takihito Sakai ,  Takayuki Sano

发明人： Takihito Sakai ,  Takayuki Sano

IPC分类号： G01N23/04 ,  A61B6/00 ,  A61B6/06

CPC分类号： A61B6/06 ,  A61B6/4021 ,  A61B6/4429 ,  A61B6/4452 ,  A61B6/487 ,  A61B6/5241

摘要： This invention has one object to provide radiographic apparatus for acquiring a radioscopic image through superimposing of strip images. The radiographic apparatus allows prevention of blurring in the image with shortened imaging time for acquiring a clearer radioscopic image. According to the configuration of this invention, the FPD-4 is entirely within an imaging range throughout continuous taking of the strip images. In so doing, a minimum movement distance of the FPD-4 may be achieved in continuous taking of the strip images. Even when movement of the FPD-4 deviates from original setting, a range of the deviation may be suppressed to be small, since the movement distance of the FPD-4 is suppressed to be small. Consequently, superimposing of the strip images may realize acquisition of a clearer radioscopic image.

摘要翻译： 本发明的一个目的是提供一种放射线照相装置，用于通过叠加带状图像来获取放射线图像。 射线照相设备允许以缩短的成像时间来防止图像中的模糊，以获得更清晰的放射线图像。 根据本发明的结构，FPD-4在连续拍摄条形图像时完全在成像范围内。 在这样做时，可以在连续拍摄条形图像时实现FPD-4的最小移动距离。 即使当FPD-4的移动偏离原始设置时，由于FPD-4的移动距离被抑制得较小，所以可以将偏差的范围抑制得较小。 因此，叠加条形图像可以实现更清晰的放射线图像的获取。

公开(公告)号：US20100183215A1

公开(公告)日：2010-07-22

申请号：US12667523

申请日：2007-07-11

申请人： Takihito Sakai ,  Masahiro Tanaka

发明人： Takihito Sakai ,  Masahiro Tanaka

IPC分类号： G06K9/00

CPC分类号： A61B6/589 ,  A61B6/4476 ,  A61B6/5241

摘要： A radiographic apparatus of this invention, imaging (slot imaging) is carried out in one operation for obtaining a plurality of radiographic images based on radiation detected with an irradiation field restricted to be narrow by the irradiation field control device. Since these plurality of radiographic images are images picked up with the irradiation field restricted to be narrow, a center calculating device can determine a shifted center of the radiographic images. A shift calculating device derives a shift of the center of the X-ray images from a positional relationship between the shifted center of the radiographic images determined and the irradiation field of a radiation detecting device. Since the shift is corrected for the plurality of radiographic images per se based on the shift determined, the shift can be corrected in one slot imaging operation. At a time of slot imaging, the shift can be corrected while determining a central point at a point of time when each image is acquired, or determining a central point all together after acquiring a series of images.

摘要翻译： 本发明的放射线照相设备，在通过被照射场控制装置限制为窄的照射场检测到的放射线获得多个放射线照相图像的一个操作中进行成像（狭缝成像）。 由于这些多个放射线照相图像是被照射场被拍摄的图像被限制为窄，所以中心计算装置可以确定放射线图像的偏移中心。 移位计算装置根据所确定的放射线照相图像的偏移中心与放射线检测装置的照射场之间的位置关系，导出X射线图像的中心偏移。 由于基于所确定的移位对于多个放射线图像本身校正移位，所以可以在一个时隙成像操作中校正移位。 在插槽成像时，可以在确定在获取每个图像的时间点处的中心点或者在获取一系列图像之后一起确定中心点时校正偏移。

公开(公告)号：US5682891A

公开(公告)日：1997-11-04

申请号：US450956

申请日：1995-05-23

申请人： Kiyohito Sonoki ,  Takihito Sakai

发明人： Kiyohito Sonoki ,  Takihito Sakai

IPC分类号： G01R33/46 ,  A61B5/055 ,  G01R33/36 ,  G01R33/48 ,  G01R33/563

CPC分类号： G01R33/563 ,  G01R33/3607 ,  G01R33/446 ,  G01R33/5605

摘要： An MR imaging apparatus using NMR phenomenon includes a main magnet, a first, a second and a third gradient field coils, a RF coil, a gradient field controller connected to the first, second and third gradient field coils, a RF controller connected to the RF coil, a waveform generator, a carrier wave generator, an amplitude modulator, a RF controller connected to the RF coil, and a data processor. The waveform generator generates a modulating signal expressed by F(t)=A {cos (.omega.t)-cos (E.omega.t)}/t, where A is an amplitude coefficient, .epsilon. is a non-excitation band coefficient, and .omega. is a frequency of the modulating signal. The RF controller causes the RF coil, in each pulse sequence, to transmit a RF signal and to apply, to the RF signal, a modulated wave output from the amplitude modulator as an MTC pulse having a frequency component slightly offset from a resonance frequency of free water protons, and a resonance frequency component of free water protons. The data processor collects data from the NMR signal detected by the RF coil, and reconstructs a sectional image from the data.

摘要翻译： 使用NMR现象的MR成像装置包括主磁体，第一，第二和第三梯度场线圈，RF线圈，连接到第一，第二和第三梯度场线圈的梯度场控制器，连接到 RF线圈，波形发生器，载波发生器，幅度调制器，连接到RF线圈的RF控制器和数据处理器。 波形发生器产生由F（t）= A {cos（ωω）-cos（Eωt）} / t表示的调制信号，其中A是振幅系数，ε是非激励频带系数，ω 是调制信号的频率。 RF控制器使得RF线圈在每个脉冲序列中传输RF信号并且将RF调制波输出的调制波作为MTC脉冲施加到具有稍微偏离谐振频率的频率分量的MTC脉冲 游离水质子和自由水质子的共振频率分量。 数据处理器从由RF线圈检测的NMR信号收集数据，并从数据中重建截面图像。

公开(公告)号：US20100189336A1

公开(公告)日：2010-07-29

申请号：US12666786

申请日：2007-06-29

申请人： Takihito Sakai

发明人： Takihito Sakai

IPC分类号： G06K9/00

CPC分类号： A61B6/4441

摘要： In a radiographic apparatus of this invention, when obtaining a long image in a longitudinal direction, an image composing unit combines a plurality of radiographic images in the longitudinal direction based on detected radiation, and a setting unit sets a length of a radiographic image to be composed in the longitudinal direction. Therefore, with the setting unit setting the length of the radiographic image to be composed in the longitudinal direction, the length can be set without requiring an expansion or reduction of the radiographic image of a site of concern. The site of concern is constantly maintained on the same scale to reduce the chance of inducing errors.

摘要翻译： 在本发明的放射线照相设备中，当在长度方向上获得长的图像时，图像合成单元基于检测到的辐射而在纵向上组合多个放射线照相图像，并且设置单元将放射线图像的长度设置为 沿纵向组成。 因此，通过设定单元设定要在纵向方向上组成的放射线照相图像的长度，可以设定长度，而不需要扩大或缩小关注部位的放射线照相图像。 关注的领域不断保持在相同的规模，以减少引发错误的机会。

公开(公告)号：US20100177949A1

公开(公告)日：2010-07-15

申请号：US12676582

申请日：2007-09-25

申请人： Takihito Sakai

发明人： Takihito Sakai

IPC分类号： G06K9/00 ,  G01N23/04 ,  H05G1/32

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/482

摘要： In the radiographic apparatus of this invention, a composite image generating device generates a composite high-voltage/low-voltage image for every time of the same high voltage/low voltage based on a plurality of high-voltage/low-voltage images successively acquired by a high-voltage/low-voltage image acquiring device. Based on the composite high-voltage/low-voltage image generated by the composite image generating device, a subtraction processing device carries out a subtraction process concerning high-voltage images and low-voltage images, to acquire subtraction images. Thus, a mistake by arithmetic processing is made inconspicuous without causing a dose shortage.

摘要翻译： 在本发明的射线照相设备中，合成图像产生装置基于连续获取的多个高电压/低电压图像，每次相同的高电压/低电压产生复合高电压/低电压图像 通过高压/低压图像获取装置。 基于由合成图像生成装置生成的复合高压/低压图像，减法处理装置对高电压图像和低电压图像进行减法处理，获得减影图像。 因此，在不造成剂量不足的情况下，通过算术处理的错误变得不明显。

公开(公告)号：US09585625B2

公开(公告)日：2017-03-07

申请号：US12676582

申请日：2007-09-25

申请人： Takihito Sakai

发明人： Takihito Sakai

IPC分类号： G06K9/00 ,  A61B6/00 ,  A61B6/03

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/482

摘要： In the radiographic apparatus of this invention, a composite image generating device generates a composite high-voltage/low-voltage image for every time of the same high voltage/low voltage based on a plurality of high-voltage/low-voltage images successively acquired by a high-voltage/low-voltage image acquiring device. Based on the composite high-voltage/low-voltage image generated by the composite image generating device, a subtraction processing device carries out a subtraction process concerning high-voltage images and low-voltage images, to acquire subtraction images. Thus, a mistake by arithmetic processing is made inconspicuous without causing a dose shortage.

摘要翻译： 在本发明的射线照相设备中，合成图像产生装置基于连续获取的多个高电压/低电压图像，每次相同的高电压/低电压产生复合高电压/低电压图像 通过高压/低压图像获取装置。 基于由合成图像生成装置生成的复合高压/低压图像，减法处理装置对高电压图像和低电压图像进行减法处理，获得减影图像。 因此，在不造成剂量不足的情况下，通过算术处理的错误变得不明显。

公开(公告)号：US07978811B2

公开(公告)日：2011-07-12

申请号：US12666786

申请日：2007-06-29

申请人： Takihito Sakai

发明人： Takihito Sakai

IPC分类号： G01N23/00 ,  G01N23/04 ,  H05G1/02

CPC分类号： A61B6/4441

摘要： In a radiographic apparatus of this invention, when obtaining a long image in a longitudinal direction, an image composing unit combines a plurality of radiographic images in the longitudinal direction based on detected radiation, and a setting unit sets a length of a radiographic image to be composed in the longitudinal direction. Therefore, with the setting unit setting the length of the radiographic image to be composed in the longitudinal direction, the length can be set without requiring an expansion or reduction of the radiographic image of a site of concern. The site of concern is constantly maintained on the same scale to reduce the chance of inducing errors.

摘要翻译： 在本发明的放射线照相设备中，当在长度方向上获得长的图像时，图像合成单元基于检测到的辐射而在纵向上组合多个放射线照相图像，并且设置单元将放射线图像的长度设置为 沿纵向组成。 因此，通过设定单元设定要在纵向方向上组成的放射线照相图像的长度，可以设定长度，而不需要扩大或缩小关注部位的放射线照相图像。 关注的领域不断保持在相同的规模，以减少引发错误的机会。

公开(公告)号：US08385623B2

公开(公告)日：2013-02-26

申请号：US12667523

申请日：2007-07-11

申请人： Takihito Sakai ,  Masahiro Tanaka

发明人： Takihito Sakai ,  Masahiro Tanaka

IPC分类号： G06K9/00

CPC分类号： A61B6/589 ,  A61B6/4476 ,  A61B6/5241

摘要： A radiographic apparatus of this invention, imaging (slot imaging) is carried out in one operation for obtaining a plurality of radiographic images based on radiation detected with an irradiation field restricted to be narrow by the irradiation field control device. Since these plurality of radiographic images are images picked up with the irradiation field restricted to be narrow, a center calculating device can determine a shifted center of the radiographic images. A shift calculating device derives a shift of the center of the X-ray images from a positional relationship between the shifted center of the radiographic images determined and the irradiation field of a radiation detecting device. Since the shift is corrected for the plurality of radiographic images per se based on the shift determined, the shift can be corrected in one slot imaging operation. At a time of slot imaging, the shift can be corrected while determining a central point at a point of time when each image is acquired, or determining a central point all together after acquiring a series of images.

摘要翻译： 本发明的放射线照相设备，在通过被照射场控制装置限制为窄的照射场检测到的放射线获得多个放射线照相图像的一个操作中进行成像（狭缝成像）。 由于这些多个放射线照相图像是被照射场被拍摄的图像被限制为窄，所以中心计算装置可以确定放射线图像的偏移中心。 移位计算装置根据所确定的放射线照相图像的偏移中心与放射线检测装置的照射场之间的位置关系，导出X射线图像的中心偏移。 由于基于所确定的移位对于多个放射线图像本身校正移位，所以可以在一个时隙成像操作中校正移位。 在插槽成像时，可以在确定在获取每个图像的时间点处的中心点或者在获取一系列图像之后一起确定中心点时校正偏移。

公开(公告)号：US08213567B2

公开(公告)日：2012-07-03

申请号：US12672272

申请日：2007-08-13

申请人： Takihito Sakai

发明人： Takihito Sakai

IPC分类号： A61B6/00

CPC分类号： A61B6/02 ,  A61B6/4429 ,  A61B6/5241 ,  G06T11/008

摘要： In the radiographic apparatus of this invention, when obtaining long images in a longitudinal direction, a correcting device corrects radiographic images based on overlapping areas of a plurality of radiographic images based on the radiation detected whenever a relative movement is made in the same direction, an image decomposing device decomposes corrected radiographic images for every predetermined distance, and an image composing device composes the decomposed images for each of the same projection angles to obtain a projection image for each projection angle. Thus, with a reconstruction processing device carrying out a reconstruction process based on the composed projection images, sectional images having a long field of view in the longitudinal direction can be obtained, while reducing luminance differences among different radiographic images.

摘要翻译： 在本发明的放射线摄影装置中，当在长度方向上获得长的图像时，校正装置基于在相同方向进行相对移动时检测到的辐射，基于多个放射线照相图像的重叠区域来校正放射线照相图像， 图像分解装置对于每个预定距离分解校正的放射线图像，并且图像合成装置针对每个相同的投影角度构成分解的图像，以获得每个投影角度的投影图像。 因此，利用基于组合的投影图像执行重建处理的重建处理装置，可以获得在纵向方向上具有长视野的截面图像，同时减少不同放射照相图像之间的亮度差异。