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1. 发明授权

US11089667B2 X-ray computed tomography apparatus 有权
公开(公告)号：US11089667B2
公开(公告)日：2021-08-10
申请号：US16842925
申请日：2020-04-08
申请人： CANON MEDICAL SYSTEMS CORPORATION
发明人： Hiroshi Hirayama , Sanae Harada , Takenori Mizuno , Masahiro Karahashi
IPC分类号： H05G1/32 , H05G1/10 , H01J35/06 , H01J35/08 , H01J35/04 , H05G1/58 , H05G1/38
摘要： According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a high voltage power supply, and focus size control circuitry. The X-ray tube includes a cathode, an anode, and a deflector configured to deflect the electrons from the cathode. The high voltage power supply generates a tube voltage to be applied between the cathode and the anode. The focus size control circuitry controls a focus size formed in the anode by applying to the deflector a deflecting voltage of a deflecting voltage value based on a tube voltage value of the tube voltage and a predetermined size, in order to form a focus of the predetermined size in the anode during the period where the tube voltage is applied by the high voltage power supply.

2. 发明授权

US10595389B2 X-ray high voltage generator, X-ray imaging apparatus, assessing circuit, and medical power supply device 有权
公开(公告)号：US10595389B2
公开(公告)日：2020-03-17
申请号：US15994130
申请日：2018-05-31
申请人： Canon Medical Systems Corporation
发明人： Masahiko Ono
IPC分类号： H05G1/54 , H05G1/46 , H05G1/32 , H05G1/10 , H01L23/34 , A61B6/03 , A61B6/00 , H05G1/38 , H02M3/335 , H05G1/22 , A61B6/10
摘要： An X-ray high voltage generator according to an embodiment includes an inverter circuit, a power device, a Pulse Width Modulation (PWM) circuit, and processing circuitry. The inverter circuit is configured to control output voltage to be output to an X-ray tube configured to generate an X-ray. The power device is provided for the inverter circuit and is configured to perform a switching process to control the output voltage. The PWM circuit is configured to control the switching process performed by the power device on the basis of an ON time period, in accordance with the output voltage. The processing circuitry is configured to output information about a product life of the power device on the basis of the ON time period.

3. 发明申请

US20180352640A1 X-RAY HIGH VOLTAGE GENERATOR, X-RAY IMAGING APPARATUS, ASSESSING CIRCUIT, AND MEDICAL POWER SUPPLY DEVICE 审中-公开
公开(公告)号：US20180352640A1
公开(公告)日：2018-12-06
申请号：US15994130
申请日：2018-05-31
申请人： Canon Medical Systems Corporation
发明人： Masahiko ONO
IPC分类号： H05G1/54 , H05G1/46 , H05G1/32 , H05G1/10 , H05G1/38 , A61B6/03 , A61B6/00 , H01L23/34
摘要： An X-ray high voltage generator according to an embodiment includes an inverter circuit, a power device, a Pulse Width Modulation (PWM) circuit, and processing circuitry. The inverter circuit is configured to control output voltage to be output to an X-ray tube configured to generate an X-ray. The power device is provided for the inverter circuit and is configured to perform a switching process to control the output voltage. The PWM circuit is configured to control the switching process performed by the power device on the basis of an ON time period, in accordance with the output voltage. The processing circuitry is configured to output information about a product life of the power device on the basis of the ON time period.

4. 发明授权

US10074679B2 Radiation image detecting device 有权
公开(公告)号：US10074679B2
公开(公告)日：2018-09-11
申请号：US14606764
申请日：2015-01-27
申请人： FUJIFILM Corporation
发明人： Takashi Tajima
IPC分类号： H05G1/38 , H05G1/44 , H01L27/146 , G01T1/16 , G01T7/00 , H05G1/28 , H04N5/32 , A61B6/00
CPC分类号： H01L27/14605 , A61B6/4233 , A61B6/4283 , A61B6/542 , A61B6/563 , G01T1/1603 , G01T7/005 , H01L27/14603 , H01L27/14607 , H01L27/14634 , H04N5/32 , H05G1/28 , H05G1/38 , H05G1/44
摘要： A sensor panel of an electric cassette is provided with detection pixels for AEC to stop X-ray irradiation when an accumulated dose of the X-rays reaches a target dose. A plurality of small blocks each containing a plurality of the detection pixels for calculating the accumulated dose are disposed in each of a plurality of large blocks obtained by dividing an imaging area. The small blocks are disposed so as not to be overlapped with each other in a Y direction.

5. 发明授权

US09674935B2 Radiation signal processing device, radiation imaging system, and radiation signal processing method 有权
公开(公告)号：US09674935B2
公开(公告)日：2017-06-06
申请号：US14692746
申请日：2015-04-22
申请人： FUJIFILM CORPORATION
发明人： Takeshi Kuwabara , Masaru Sato
IPC分类号： H05G1/38 , H05G1/44 , A61B6/00
CPC分类号： H05G1/44 , A61B6/4233 , A61B6/542
摘要： A radiation signal processing device including: a reception section that receives as a digital signal a signal representing a detection result from a radiation imaging device that captures an image according to irradiated radiation, and that detects a radiation irradiation amount and outputs the signal representing the detection result; and a conversion section that converts the digital signal representing the detection result received by the reception section into an analog signal recognizable by a radiation irradiation device that irradiates radiation onto the radiation imaging device and stops radiation irradiation in cases in which radiation has reached a specific irradiation amount.

6. 发明授权

US09036785B2 High-voltage apparatus, and radiation source and radioscopic apparatus having the same 有权
标题翻译：高压装置，以及具有该高压装置的辐射源和放射线检查装置
公开(公告)号：US09036785B2
公开(公告)日：2015-05-19
申请号：US13265539
申请日：2009-04-22
申请人： Tasuku Saito , Hideki Fujii
发明人： Tasuku Saito , Hideki Fujii
IPC分类号： H05G1/32 , H05G1/10 , H01J35/26 , H05G1/38 , H05G1/46
CPC分类号： H05G1/10 , H01J35/26 , H05G1/32 , H05G1/38 , H05G1/46
摘要： In a high-voltage apparatus according to this invention, a predetermined voltage is applied to a rotating anode after waiting until the number of rotations increases to such an extent that the rotating anode is not damaged. That is, X-rays of desired intensity are already outputted from a point of time when the voltage is applied to the rotating anode. Therefore, diagnosis can be performed immediately after the voltage is applied to the rotating anode. That is, unlike the prior art, there is no need to wait until X-ray intensity becomes suitable for diagnosis after X-ray emission is started, and there is no need to irradiate the patient with unnecessary X-rays. Therefore, the patient can be inhibited from being irradiated with excessive X-rays (with an improvement made in a response from when the operator gives instructions for starting fluoroscopy until emission of X-rays suitable for diagnosis).
摘要翻译：在根据本发明的高电压装置中，在等待直到转数增加到旋转阳极未被损坏的程度之后，将预定电压施加到旋转阳极。也就是说，从施加到旋转阳极的电压的时刻起已经输出了所需强度的X射线。因此，可以在将电压施加到旋转阳极之后立即进行诊断。也就是说，与现有技术不同，在X射线发射开始之后，不需要等待X射线强度变得适合于诊断，并且不需要向患者照射不必要的X射线。因此，可以抑制患者被过量的X射线照射（当从操作者给出用于开始荧光透视的指示直到发射适合于诊断的X射线时的响应而改善）。

7. 发明授权

US08761864B2 Methods and apparatus for gated acquisitions in digital radiography 有权
标题翻译：数字摄影中门控采集的方法和装置
公开(公告)号：US08761864B2
公开(公告)日：2014-06-24
申请号：US11521192
申请日：2006-09-14
申请人： John Michael Sabol , Kadri Nizar Jabri , Renuka Uppaluri , Gopal B. Avinash
发明人： John Michael Sabol , Kadri Nizar Jabri , Renuka Uppaluri , Gopal B. Avinash
IPC分类号： A61B6/03 , A61B6/00 , A61B6/02 , H05G1/38 , A61B5/113 , A61B5/00
CPC分类号： A61B6/025 , A61B5/0402 , A61B5/113 , A61B5/721 , A61B6/032 , A61B6/405 , A61B6/482 , A61B6/503 , A61B6/505 , A61B6/508 , A61B6/527 , A61B6/5288 , A61B6/541 , A61B6/542 , H05G1/38
摘要： A method includes automatically determining at least one gating signal based on a physiological signal from a subject being imaged by an imaging system, automatically determining, based upon prior analysis and knowledge of the imaging system's capabilities, a timing of each of a plurality of exposures within a single or multiple cycles of the physiologic signal, and performing the multiple acquisitions.
摘要翻译：一种方法包括基于来自被成像系统成像的对象的生理信号自动确定至少一个选通信号，基于先前分析和成像系统能力的知识，自动确定多个曝光内的每个曝光的时间生理信号的单个或多个周期，并执行多次采集。

8. 发明授权

US08755490B2 X-ray imaging device 失效
标题翻译： X射线成像装置
公开(公告)号：US08755490B2
公开(公告)日：2014-06-17
申请号：US13262136
申请日：2009-04-07
申请人： Shoji Takamura
发明人： Shoji Takamura
IPC分类号： H05G1/38
CPC分类号： A61B6/00 , A61B6/54 , A61B6/544 , A61B6/545
摘要： Disclosed is an X-ray imaging device with which X-ray exposure will not be stopped due to the backup time, causing underexposure, in phototimer imaging, because the body of the subject is thick. A database unit (18) stores a database showing the relationships among a variety of subject (M) body thicknesses (t), X-ray parameters, and imaging times. A search processor (16) searches the aforementioned database for data matching X-ray parameters stored in a parameter storage unit (15) and body thicknesses (t) calculated by a body thickness measurement unit (17), and requests the corresponding imaging time. If the imaging time is longer than the backup time set by an X-ray controller (12), the search processor (16) instructs the X-ray controller (12) to extend the backup time to the imaging time.
摘要翻译：本发明公开了一种X射线成像装置，其由于被检体的体积较厚，由于备用时间而不能停止X射线曝光，导致光速度成像中的曝光不足。数据库单元（18）存储显示各种被摄体（M）体厚（t），X射线参数和成像时间之间的关系的数据库。搜索处理器（16）在上述数据库中搜索数据匹配存储在参数存储单元（15）中的X射线参数和由体厚度测量单元（17）计算的体厚度（t），并且请求相应的成像时间。如果成像时间长于由X射线控制器（12）设置的备份时间，则搜索处理器（16）指示X射线控制器（12）将备份时间延长到成像时间。

9. 发明申请

US20130058456A1 RADIOGRAPHING SYSTEM, METHOD OF CONTROLLING AUTOMATIC EXPOSURE IN RADIOGRAPHING SYSTEM, AND RADIOLOGICAL IMAGE DETECTION DEVICE 有权
标题翻译：放射学系统，放射自动曝光系统中的自动曝光控制方法和放射图像检测装置
公开(公告)号：US20130058456A1
公开(公告)日：2013-03-07
申请号：US13603091
申请日：2012-09-04
申请人： Takeshi KUWABARA , Takeshi KAMIYA , Yusuke KITAGAWA
发明人： Takeshi KUWABARA , Takeshi KAMIYA , Yusuke KITAGAWA
IPC分类号： H05G1/38 , A61B6/00
CPC分类号： A61B6/4233 , A61B6/4283 , A61B6/4405 , A61B6/542 , A61B6/548 , A61B6/587
摘要： A comparison circuit 78 of an AEC unit 67 of an electronic cassette 13 compares the accumulated value of a detection signal from a detection pixel 65 of the electronic cassette 13 with an irradiation prohibition threshold value on the electronic cassette 13. When the accumulated value of the detection signal reaches the irradiation prohibition threshold value on the electronic cassette 13, a detection signal having the same voltage value as the irradiation prohibition threshold value of the radiographing condition on the source control device 11 paired with the radiographing condition on the electronic cassette 13 is output from a detection signal I/F 80 of the electronic cassette 13 toward a detection signal I/F 26 of the source control device 11.
摘要翻译：电子盒13的AEC单元67的比较电路78将来自电子盒13的检测像素65的检测信号的累计值与电子盒13上的照射禁止阈值进行比较。当累积的检测信号达到电子盒13上的照射禁止阈值，输出具有与源电子盒13上的放射照相条件配对的源控制装置11上的放射线条件的照射禁止阈值相同的电压值的检测信号从电子盒13的检测信号I / F 80朝向源极控制装置11的检测信号I / F26。

10. 发明申请

US20130058455A1 RADIOGRAPHING SYSTEM, METHOD OF CONTROLLING AUTOMATIC EXPOSURE IN RADIOGRAPHING SYSTEM, AND RADIOLOGICAL IMAGE DETECTION DEVICE 有权
标题翻译：放射学系统，放射自动曝光系统中的自动曝光控制方法和放射图像检测装置
公开(公告)号：US20130058455A1
公开(公告)日：2013-03-07
申请号：US13603075
申请日：2012-09-04
申请人： Takeshi KUWABARA , Takeshi KAMIYA , Yusuke KITAGAWA
发明人： Takeshi KUWABARA , Takeshi KAMIYA , Yusuke KITAGAWA
IPC分类号： H05G1/38 , A61B6/00
CPC分类号： A61B6/585 , A61B6/4233 , A61B6/4283 , A61B6/4291 , A61B6/542 , A61B6/545 , A61B6/547 , A61B6/548
摘要： A compensation circuit 76 of an AEC unit 67 of an electronic cassette 13 defines the detection signal of a detection pixel 65 of the electronic cassette 13 as a detection signal corresponding to the detection signal of an old AEC sensor 25. The compensation circuit 76 performs compensation so as to exclude the influence on the detection signal due to a difference in the configuration of an intermediate member disposed between an X-ray source 10 and an FPD 35 of the electronic cassette 13 when the detection pixel 65 is used as an AEC sensor instead of the old AEC sensor 25. The detection signal is transmitted from a detection signal I/F 80 to a detection signal I/F 26 of a source control device 11 as it is (instantaneous value) or as an accumulated value obtained using an integration circuit 77.
摘要翻译：电子盒13的AEC单元67的补偿电路76将电子盒13的检测像素65的检测信号定义为对应于旧AEC传感器25的检测信号的检测信号。补偿电路76执行补偿以便当检测像素65用作AEC传感器时，排除由于设置在电子盒13的X射线源10和FPD 35之间的中间构件的构型的差异而对检测信号的影响检测信号从原始控制装置11的检测信号I / F 80发送到原始控制装置11的检测信号I / F 26（瞬时值），或作为使用积分获得的累积值电路77。

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