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1. 发明授权

US11047994B2 Radiation imaging apparatus 有权
公开(公告)号：US11047994B2
公开(公告)日：2021-06-29
申请号：US16731143
申请日：2019-12-31
申请人： CANON KABUSHIKI KAISHA
发明人： Kosuke Terui , Atsushi Iwashita , Akira Tsukuda , Sota Torii
IPC分类号： H01L27/146 , G01T1/17 , G01T1/29
摘要： Radiation imaging apparatus includes pixel array having pixels, readout circuit for reading signals from the pixel array, and detector for detecting, based on radiation emitted from radiation source or information provided from the radiation source, start of radiation irradiation by the radiation source, and controller for determining timing of each of operations of sample and hold in each of the pixels each time the start of radiation irradiation is detected by the detector. The timing of at least one operation of the operations is timing in radiation irradiation period, and each of the pixels includes convertor for converting radiation into electrical signal, and sample and hold circuit for sample-holding the signal from the conversion element over plural times in accordance with the timing of each of the operations determined by the controller.

2. 发明申请

US20200155097A1 RADIATION IMAGING APPARATUS AND RADIATION IMAGING SYSTEM 审中-公开
公开(公告)号：US20200155097A1
公开(公告)日：2020-05-21
申请号：US16749201
申请日：2020-01-22
申请人： CANON KABUSHIKI KAISHA
发明人： Sota Torii , Atsushi Iwashita , Kosuke Terui , Akira Tsukuda
IPC分类号： A61B6/00 , G01N23/04
摘要： A radiation imaging apparatus is provided. The apparatus comprises a detection unit configured to generate an image signal according to radiation emitted by a radiation source, an image processing unit, and a control unit. The control unit performs first imaging and second imaging performed after the first imaging using radiations of different energies, the image processing unit generates an energy subtraction image using a first image signal generated by the detection unit in the first imaging and a second image signal generated by the detection unit in the second imaging, and the second imaging is performed under a radiation irradiation condition according to a noise amount included in the first image signal.

3. 发明授权

US11360034B2 Radiation imaging apparatus and radiation imaging system 有权
公开(公告)号：US11360034B2
公开(公告)日：2022-06-14
申请号：US16745807
申请日：2020-01-17
申请人： CANON KABUSHIKI KAISHA
发明人： Sota Torii , Kosuke Terui , Akira Tsukuda , Atsushi Iwashita
IPC分类号： G01N23/04 , A61B6/00 , G06T5/00 , G06T5/50 , H04N5/32 , H04N5/3745
摘要： A radiation imaging apparatus is provided. The apparatus includes an imaging unit including pixels and a control unit. Each of the pixels includes a conversion unit and a sample/hold circuit. The control unit causes the imaging unit to perform first imaging and second imaging after the first imaging to generate one energy subtraction image, and controls a timing of causing the sample/hold circuit in the first imaging to sample a first image signal obtained by the first imaging and a timing of causing the sample/hold circuit in the second imaging to sample a second image signal obtained by the second imaging in accordance with radiation irradiation conditions set in advance so as to reduce a difference between an amount of noise contained in the first image signal and an amount of noise contained in the second image signal.

4. 发明授权

US11303831B2 Radiation imaging apparatus and radiation imaging method 有权
公开(公告)号：US11303831B2
公开(公告)日：2022-04-12
申请号：US16519456
申请日：2019-07-23
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Iwashita , Kosuke Terui , Akira Tsukuda , Sota Torii
IPC分类号： H04N5/335 , H04N5/363 , H04N5/343 , H04N5/353 , H04N5/378
摘要： A radiation imaging apparatus includes an imaging unit having a pixel array of pixels, and a signal processing unit for processing a signal from the imaging unit. Each pixel includes a conversion element for converting radiation into electrical signal and a reset unit for resetting the conversion element, the signal processing unit generates radiation image based on first image corresponding to electrical signal converted by the conversion unit of each pixel in a first period, and second image corresponding to electrical signal converted by the conversion element of each pixel in a second period which starts after start of the first period and ends before end of the first period, and in each pixel, the conversion element is not reset by the reset unit in the first period.

5. 发明申请

US20200150286A1 RADIATION IMAGING APPARATUS 审中-公开
公开(公告)号：US20200150286A1
公开(公告)日：2020-05-14
申请号：US16731143
申请日：2019-12-31
申请人： CANON KABUSHIKI KAISHA
发明人： Kosuke Terui , Atsushi Iwashita , Akira Tsukuda , Sota Torii
IPC分类号： G01T1/17 , G01T1/29
摘要： Radiation imaging apparatus includes pixel array having pixels, readout circuit for reading signals from the pixel array, and detector for detecting, based on radiation emitted from radiation source or information provided from the radiation source, start of radiation irradiation by the radiation source, and controller for determining timing of each of operations of sample and hold in each of the pixels each time the start of radiation irradiation is detected by the detector. The timing of at least one operation of the operations is timing in radiation irradiation period, and each of the pixels includes convertor for converting radiation into electrical signal, and sample and hold circuit for sample-holding the signal from the conversion element over plural times in accordance with the timing of each of the operations determined by the controller.

6. 发明申请

US20150257726A1 BREAST TOMOGRAPHY APPARATUS AND CONTROL METHOD 有权
标题翻译：乳腺造影装置和控制方法
公开(公告)号：US20150257726A1
公开(公告)日：2015-09-17
申请号：US14630767
申请日：2015-02-25
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Tsukuda
IPC分类号： A61B6/00 , A61B6/04
CPC分类号： A61B6/502 , A61B6/032 , A61B6/035 , A61B6/0414 , A61B6/0435 , A61B6/0478 , A61B6/5205 , A61B6/547
摘要： A breast tomography apparatus includes a gantry incorporating a radiation source and a radiation detector and a breast insert portion which is provided in the gantry and in which the breast as an imaging target is to be inserted. The breast tomography apparatus detects contact between an object and the gantry by using at least one contact detection sensor arranged on the gantry, and determines the insert condition of the breast into the breast insert portion based on the detection of contact between the object and the gantry by the contact detection sensor.
摘要翻译：乳房断层摄影装置包括设置在台架中的放射源和放射线检测器和胸部插入部的台架，并且其中作为成像对象的乳房将被插入。乳房断层摄影装置通过使用布置在台架上的至少一个接触检测传感器来检测物体与台架之间的接触，并且基于物体与台架之间的接触的检测来确定乳房插入部分的插入状态通过接触检测传感器。

7. 发明申请

US20140240560A1 IMAGING APPARATUS, METHOD FOR CONTROLLING IMAGING APPARATUS AND COMPUTER-READABLE STORAGE MEDIUM 有权
标题翻译：成像装置，控制成像装置和计算机可读存储介质的方法
公开(公告)号：US20140240560A1
公开(公告)日：2014-08-28
申请号：US14187474
申请日：2014-02-24
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Tsukuda
IPC分类号： H04N5/361
CPC分类号： H04N5/361
摘要： In an imaging apparatus, a two-dimensional surface on which imaging elements are arranged has a first region that includes one or more lines, and a second region other than the first region that includes a plurality of lines, each line including a light shielded region that is shielded from light and an effective region other than the light shielded region. The imaging apparatus determines a correction value for use in offset correction for each line in the first region according to the representative value derived with respect to the first region and a first determination method, and determines correction value for use in the offset correction for each line in the second region according to the representative value derived with respect to the second region and a second determination method that is independent from the first determination method.
摘要翻译：在成像装置中，其上配置有成像元件的二维表面具有包括一条或多条线的第一区域和除了包括多条线的第一区域以外的第二区域，每条线包括遮光区域屏蔽光和除了遮光区域之外的有效区域。成像装置根据相对于第一区域导出的代表值和第一确定方法确定用于第一区域中的每行的偏移校正的校正值，并且确定用于每行的偏移校正的校正值根据相对于第二区域导出的代表值的第二区域和与第一确定方法无关的第二确定方法。

8. 发明授权

US11422098B2 Radiation imaging system, imaging control apparatus, and method 有权
公开(公告)号：US11422098B2
公开(公告)日：2022-08-23
申请号：US17019638
申请日：2020-09-14
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Iwashita , Akira Tsukuda , Kosuke Terui , Sota Torii , Takeshi Noda
IPC分类号： G01N23/04 , G01T1/17 , H04N5/32
摘要： An imaging control apparatus obtains a plurality of images at different radiation energies, the images having been obtained as a result of irradiating a subject with radiation whose energy changes during one shot, and detecting, a plurality of times, the radiation that has passed through the subject during the one shot; generates an energy subtraction image by performing energy subtraction processing using a plurality of images; and generates a difference image using a plurality of generated energy subtraction images.

9. 发明申请

US20210041584A1 RADIATION IMAGING APPARATUS AND IMAGING SYSTEM 有权
公开(公告)号：US20210041584A1
公开(公告)日：2021-02-11
申请号：US17080959
申请日：2020-10-27
申请人： CANON KABUSHIKI KAISHA
发明人： Kosuke Terui , Atsushi Iwashita , Akira Tsukuda , Sota Torii
IPC分类号： G01T1/20 , H04N5/32
摘要： A radiation imaging apparatus, comprising a sensor array in which a plurality of sensor units are arranged and a driving unit for driving the sensor array, wherein each sensor unit includes u detection element for detecting radiation and a sampling unit configured to be able to sample a signal from the detection element, the sampling unit is connected to a signal line configured to propagate a signal from the detection element, the driving unit uses the sampling unit to perform a first sampling driving operation and a second sampling driving operation to sample the signal propagating through the signal line, and the driving unit starts the second sampling driving operation before the completion of the first sampling driving operation and completes the second sampling driving operation after the completion of the first sampling driving operation.

10. 发明申请

US20200245441A1 RADIATION IMAGING APPARATUS, OPERATION METHOD THEREFOR, AND COMPUTER-READABLE MEDIUM 审中-公开
公开(公告)号：US20200245441A1
公开(公告)日：2020-07-30
申请号：US16847074
申请日：2020-04-13
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Tsukuda , Atsushi Iwashita , Kosuke Terui , Sota Torii
IPC分类号： H05G1/26 , G01N23/04
摘要： Provided is a radiation imaging apparatus configured to image an imaging target object through use of a radiation generated by a radiation generator arranged to generate the radiation. The radiation imaging apparatus includes a spectrum calculating unit configured to calculate a spectrum of the radiation based on a transient response characteristic of the radiation generator.

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