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1. 发明授权

US08948339B2 Radiation tomography apparatus 有权
标题翻译：辐射断层扫描仪
公开(公告)号：US08948339B2
公开(公告)日：2015-02-03
申请号：US13522192
申请日：2010-01-15
申请人： Daisuke Notohara , Kazuyoshi Nishino
发明人： Daisuke Notohara , Kazuyoshi Nishino
IPC分类号： A61B6/03 , A61B6/02 , A61B6/06
CPC分类号： A61B6/02 , A61B6/06
摘要： One object of this invention is to provide a radiation tomography apparatus for acquiring a tomographic image from a plurality of fluoroscopic images. The radiation tomography apparatus can acquire the tomographic image having superior visibility without being influenced by a shadow of a collimator appearing in the fluoroscopic image when radiation is applied only to a portion of an FPD through control of the collimator. In this invention, a boundary between a shadow area where the shadow of the collimator appears in the fluoroscopic image and a non-shadow area is identified, and the shadow area in the fluoroscopic image is complemented by the non-shadow area, etc., whereby a complement image is generated. Then the complement image is used for generating the tomographic image. According to this invention, an extremely dark area where the shadow of the collimator appears is removed and thereafter the tomographic image is generated. As a result, the tomographic image has superior visibility with no blurring due to the shadow of the collimator.
摘要翻译：本发明的一个目的是提供一种用于从多个透视图像获取断层图像的放射线断层摄影装置。当通过准直器的控制仅对FPD的一部分进行辐射时，放射线断层摄影装置可以获取具有优异的可视性的断层图像，而不受荧光图像中出现的准直仪的影子的影响。在本发明中，识别在透视图像中出现准直仪的阴影的阴影区域与非阴影区域之间的边界，并且透视图像中的阴影区域被非阴影区域等补充，从而产生补体图像。然后补码图像用于生成断层图像。根据本发明，去除了准直仪的阴影出现的极暗区域，之后产生断层图像。结果，断层图像具有优良的可视性，由于准直仪的阴影而没有模糊。

2. 发明申请

US20120140877A1 BODY SECTION RADIOGRAPHIC APPARATUS, AND A NOISE REMOVING METHOD FOR THE BODY SECTION RADIOGRAPHIC APPARATUS 有权
标题翻译：身体部位摄影装置，以及身体部位摄影装置的噪声消除方法
公开(公告)号：US20120140877A1
公开(公告)日：2012-06-07
申请号：US12959453
申请日：2010-12-03
申请人： Daisuke Notohara , Kazuyoshi Nishino , Mikihiko Kato , Koichi Shibata
发明人： Daisuke Notohara , Kazuyoshi Nishino , Mikihiko Kato , Koichi Shibata
IPC分类号： H05G1/02
CPC分类号： A61B6/4291 , A61B6/025 , A61B6/027 , A61B6/4085 , A61B6/4233 , A61B6/4476 , A61B6/487 , A61B6/5241 , A61B6/547 , G21K1/025
摘要： A body section radiographic apparatus for serially acquiring a series of fluoroscopic images while synchronously moving a radiation source and a radiation detecting device, and obtaining a sectional image of a subject from the series of fluoroscopic images. The apparatus includes, besides the radiation source which emits a beam of radiation and the radiation detecting device which is opposed to the radiation source and has a plurality of radiation detecting elements, a synchronous moving device for moving the radiation source and the radiation detecting device synchronously with each other, and a radiation grid disposed to cover a radiation detecting plane of the radiation detecting device for removing scattered radiation. The fluoroscopic images are serially acquired while moving the radiation grid relative to the radiation detecting device to change positions where radiation transmission unevenness of the radiation grid is projected on the radiation detecting device.
摘要翻译：一种体部放射线照相装置，用于在同时移动辐射源和放射线检测装置的同时顺序地获取一系列荧光透视图像，并从该系列荧光透视图像中获得被检体的截面图像。该装置除了发射辐射束的辐射源和与辐射源相对并具有多个辐射检测元件的辐射检测装置之外，还同步地移动辐射源和辐射检测装置的同步移动装置并且布置成覆盖辐射检测装置的辐射检测平面以用于去除散射的辐射的辐射栅格。在相对于放射线检测装置移动辐射格栅的同时顺序获取荧光透视图像，以改变辐射网格的辐射传播不均匀度投射在辐射检测装置上的位置。

3. 发明申请

US20100189214A1 RADIOGRAPHIC APPARATUS 有权
标题翻译：放映设备
公开(公告)号：US20100189214A1
公开(公告)日：2010-07-29
申请号：US12376765
申请日：2007-08-08
申请人： Koichi Shibata , Kazuhiro Mori , Shingo Baba , Daisuke Notohara , Shinya Hirasawa , Keiichi Goto , Yukio Mishina
发明人： Koichi Shibata , Kazuhiro Mori , Shingo Baba , Daisuke Notohara , Shinya Hirasawa , Keiichi Goto , Yukio Mishina
IPC分类号： H05G1/60 , A61B6/03 , G06K9/00
CPC分类号： A61B6/025 , A61B6/027 , A61B6/4233 , A61B6/4441 , A61B6/5205 , A61B6/5241
摘要： An X-ray tube and a flat panel X-ray detector (FPD) are constructed movable parallel to each other in the same direction along a body axis which is a longitudinal direction of a patient. The X-ray tube intermittently emits radiation and the FPD detects radiation transmitted through the patient irradiated intermittently whenever the X-ray tube and FPD move every pitch. X-ray images O1, O2, . . . , OI, . . . , and OM are decomposed for every pitch noted above. The decomposed images are composed for each projection angle to obtain projection images P1, P2 and so on. Therefore, a sectional image with a long field of view in the longitudinal direction can be obtained by carrying out a reconstruction process based on the composed projection images.
摘要翻译： X射线管和平板X射线检测器（FPD）被构造为沿着与患者的纵向方向相同的身体轴线在相同方向上彼此平行地移动。每当X射线管和FPD移动每个间距时，X射线管间歇地发射辐射并且FPD检测间歇地照射的患者的辐射。 X射线图像O1，O2，。。。，OI，。。。，并且对于上述每个音调分解OM。为每个投影角度构成分解图像以获得投影图像P1，P2等。因此，通过基于组合的投影图像进行重建处理，可以获得纵向具有长视野的截面图像。

4. 发明申请

US20130216020A1 RADIATION TOMOGRAPHY APPARATUS 有权
标题翻译：辐射测量仪
公开(公告)号：US20130216020A1
公开(公告)日：2013-08-22
申请号：US13522192
申请日：2010-01-15
申请人： Daisuke Notohara , Kazuyoshi Nishino
发明人： Daisuke Notohara , Kazuyoshi Nishino
IPC分类号： A61B6/02
CPC分类号： A61B6/02 , A61B6/06
摘要： One object of this invention is to provide a radiation tomography apparatus for acquiring a tomographic image from a plurality of fluoroscopic images. The radiation tomography apparatus can acquire the tomographic image having superior visibility without being influenced by a shadow of a collimator appearing in the fluoroscopic image when radiation is applied only to a portion of an FPD through control a the collimator. In this invention, a boundary between a shadow area where the shadow of the collimator appears in the fluoroscopic image and a non-shadow area is identified, and the shadow area in the fluoroscopic image is complemented by the non-shadow area, etc., whereby a complement image is generated. Then the complement image is used for generating the tomographic image. According to this invention, an extremely dark area where the shadow of the collimator appears is removed and thereafter the tomographic image is generated. As a result, the tomographic image has superior visibility with no blurring due to the shadow of the collimator.
摘要翻译：本发明的一个目的是提供一种用于从多个透视图像获取断层图像的放射线断层摄影装置。放射线断层摄影装置可以通过控制准直仪，仅对FPD的一部分施加放射线时，可以获取具有优异的可见度的断层摄影图像，而不会受到透视图像中出现的准直仪的阴影的影响。在本发明中，识别在透视图像中出现准直仪的阴影的阴影区域与非阴影区域之间的边界，并且透视图像中的阴影区域被非阴影区域等补充，从而产生补体图像。然后补码图像用于生成断层图像。根据本发明，去除了准直仪的阴影出现的极暗区域，之后产生断层图像。结果，断层图像具有优良的可视性，由于准直仪的阴影而没有模糊。

5. 发明授权

US08798231B2 Radiographic apparatus 有权
标题翻译：射线照相设备
公开(公告)号：US08798231B2
公开(公告)日：2014-08-05
申请号：US13387232
申请日：2010-07-21
申请人： Daisuke Notohara , Koichi Shibata
发明人： Daisuke Notohara , Koichi Shibata
IPC分类号： A61B6/00
CPC分类号： A61B6/5258 , A61B6/025 , A61B6/4233 , A61B6/4441 , A61B6/4452 , A61B6/542
摘要： One object of this invention is to provide radiography apparatus with suppressed exposure to a subject in tomography mode. An FPD provided in X-ray apparatus according to this invention converts X-rays into electric signals, and thereafter amplifies the signals to output them to an image generation section. According to this invention, an amplification factor is higher in a tomography mode than in a spot radiography mode. A tomographic image is obtained through superimposing two or more fluoroscopic image. In comparison of the fluoroscopic images, they differ from one another in appearance of the false image. Accordingly, superimposing the images may achieve cancel of the false images. In this way, the tomographic image finally obtained has no false image.
摘要翻译：本发明的一个目的是提供一种放射摄影装置，其在断层摄影模式中被抑制地暴露于被摄体。根据本发明的X射线装置中提供的FPD将X射线转换为电信号，然后放大信号以将其输出到图像生成部。根据本发明，断层摄影模式中的放大因子比在放射摄影模式中更高。通过叠加两个或更多个透视图像获得断层图像。与透视图像相比，它们在假图像的外观上彼此不同。因此，叠加图像可以取消假图像。以这种方式，最终获得的断层图像没有假图像。

6. 发明授权

US08737562B2 Body section radiographic apparatus, and a noise removing method for the body section radiographic apparatus 有权
标题翻译：身体部分放射线照相设备和用于身体部分放射线照相设备的噪声消除方法
公开(公告)号：US08737562B2
公开(公告)日：2014-05-27
申请号：US12959453
申请日：2010-12-03
申请人： Daisuke Notohara , Kazuyoshi Nishino , Mikihiko Kato , Koichi Shibata
发明人： Daisuke Notohara , Kazuyoshi Nishino , Mikihiko Kato , Koichi Shibata
IPC分类号： A61B6/02
CPC分类号： A61B6/4291 , A61B6/025 , A61B6/027 , A61B6/4085 , A61B6/4233 , A61B6/4476 , A61B6/487 , A61B6/5241 , A61B6/547 , G21K1/025
摘要： A body section radiographic apparatus for serially acquiring a series of fluoroscopic images while synchronously moving a radiation source and a radiation detecting device, and obtaining a sectional image of a subject from the series of fluoroscopic images. The apparatus includes, besides the radiation source which emits a beam of radiation and the radiation detecting device which is opposed to the radiation source and has a plurality of radiation detecting elements, a synchronous moving device for moving the radiation source and the radiation detecting device synchronously with each other, and a radiation grid disposed to cover a radiation detecting plane of the radiation detecting device for removing scattered radiation. The fluoroscopic images are serially acquired while moving the radiation grid relative to the radiation detecting device to change positions where radiation transmission unevenness of the radiation grid is projected on the radiation detecting device.
摘要翻译：一种体部放射线照相装置，用于在同时移动辐射源和放射线检测装置的同时顺序地获取一系列荧光透视图像，并从该系列荧光透视图像中获得被检体的截面图像。该装置除了发射辐射束的辐射源和与辐射源相对并具有多个辐射检测元件的辐射检测装置之外，还同步地移动辐射源和辐射检测装置的同步移动装置并且布置成覆盖辐射检测装置的辐射检测平面以用于去除散射的辐射的辐射栅格。在相对于放射线检测装置移动辐射格栅的同时顺序获取荧光透视图像，以改变辐射网格的辐射传播不均匀度投射在辐射检测装置上的位置。

7. 发明申请

US20120128119A1 RADIOGRAPHIC APPARATUS 有权
标题翻译：放映设备
公开(公告)号：US20120128119A1
公开(公告)日：2012-05-24
申请号：US13387232
申请日：2010-07-21
申请人： Daisuke Notohara , Koichi Shibata
发明人： Daisuke Notohara , Koichi Shibata
IPC分类号： A61B6/03
CPC分类号： A61B6/5258 , A61B6/025 , A61B6/4233 , A61B6/4441 , A61B6/4452 , A61B6/542
摘要： One object of this invention is to provide radiography apparatus with suppressed exposure to a subject in tomography mode. An FPD provided in X-ray apparatus according to this invention converts X-rays into electric signals, and thereafter amplifies the signals to output them to an image generation section. According to this invention, an amplification factor is higher in a tomography mode than in a spot radiography mode. A tomographic image is obtained through superimposing two or more fluoroscopic image. In comparison of the fluoroscopic images, they differ from one another in appearance of the false image. Accordingly, superimposing the images may achieve cancel of the false images. In this way, the tomographic image finally obtained has no false image.
摘要翻译：本发明的一个目的是提供一种放射摄影装置，其在断层摄影模式中被抑制地暴露于被摄体。根据本发明的X射线装置中提供的FPD将X射线转换为电信号，然后放大信号以将其输出到图像生成部。根据本发明，断层摄影模式中的放大因子比在放射摄影模式中更高。通过叠加两个或更多个透视图像获得断层图像。与透视图像相比，它们在假图像的外观上彼此不同。因此，叠加图像可以取消假图像。以这种方式，最终获得的断层图像没有假图像。

8. 发明授权

US07940887B2 Radiographic apparatus 有权
标题翻译：射线照相设备
公开(公告)号：US07940887B2
公开(公告)日：2011-05-10
申请号：US12376765
申请日：2007-08-08
申请人： Koichi Shibata , Kazuhiro Mori , Shingo Baba , Daisuke Notohara , Shinya Hirasawa , Keiichi Goto , Yukio Mishina
发明人： Koichi Shibata , Kazuhiro Mori , Shingo Baba , Daisuke Notohara , Shinya Hirasawa , Keiichi Goto , Yukio Mishina
IPC分类号： A61B6/00
CPC分类号： A61B6/025 , A61B6/027 , A61B6/4233 , A61B6/4441 , A61B6/5205 , A61B6/5241
摘要： An X-ray tube and a flat panel X-ray detector (FPD) are constructed movable parallel to each other in the same direction along a body axis which is a longitudinal direction of a patient. The X-ray tube intermittently emits radiation and the FPD detects radiation transmitted through the patient irradiated intermittently whenever the X-ray tube and FPD move every pitch. X-ray images O1, O2, . . . , OI, . . . , and OM are decomposed for every pitch noted above. The decomposed images are composed for each projection angle to obtain projection images P1, P2 and so on. Therefore, a sectional image with a long field of view in the longitudinal direction can be obtained by carrying out a reconstruction process based on the composed projection images.
摘要翻译： X射线管和平板X射线检测器（FPD）被构造为沿着与患者的纵向方向相同的身体轴线在相同方向上彼此平行地移动。每当X射线管和FPD移动每个间距时，X射线管间歇地发射辐射并且FPD检测间歇地照射的患者的辐射。 X射线图像O1，O2，。。。，OI，。。。，并且对于上述每个音调分解OM。为每个投影角度构成分解图像以获得投影图像P1，P2等。因此，通过基于组合的投影图像进行重建处理，可以获得纵向具有长视野的截面图像。

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