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公开(公告)号：US20180270938A1
公开(公告)日：2018-09-20
申请号：US15977455
申请日：2018-05-11
发明人： Myeong-je KIM
CPC分类号： H05G1/12 , A61B6/4233 , A61B6/4405 , A61B6/4452 , A61B6/56 , H05G1/10 , H05G1/30 , H05G1/32 , H05G1/54 , H05G1/56
摘要： Provided is a mobile X-ray apparatus including: an X-ray radiator configured to emit X-rays; a battery configured to supply power to the X-ray radiator; a charger configured to charge the battery; a battery management system (BMS) configured to receive power from the battery or the charger and output a first signal based on a state of the battery; and a first switch configured to be turned off according to the first signal to prevent power from being supplied to the BMS, wherein the first switch is further configured to be turned on by power supplied from the charger when the BMS is shut down.
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公开(公告)号：US20180228011A1
公开(公告)日：2018-08-09
申请号：US15888219
申请日：2018-02-05
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.
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公开(公告)号：US10004469B2
公开(公告)日：2018-06-26
申请号：US15037751
申请日：2014-11-19
发明人： Volker Neumann
CPC分类号： A61B6/487 , A61B6/4014 , A61B6/4233 , A61B6/4266 , A61B6/4405 , A61B6/4441 , A61B6/4482 , A61B6/463 , A61B6/467 , A61B6/542 , A61B6/545 , A61B6/56 , H05G1/32
摘要： A mobile digital fluoroscopy system comprising a mobile X-ray system carrier unit (1) comprising a first and a second X-ray device (19, 20) each having a transmitter (21, 23) and a receiver (22, 24), wherein said respective first and second X-ray devices (19, 20) are configured to enable X-ray imaging in mutually intersecting planes, a kV unit 1012; and; wherein said a mobile control unit (2a) is communicatively coupled to the mobile X-ray system carrier (1) via a cable (150), wherein said mobile control unit (2a) is configured to receive a first set of image data 810 from said kV unit (1012) and sending a control signal to said kV unit (1012) upon completion of receiving of said image data 810, wherein kV unit 1012 is configured to generate a synchronization signal 820 to said transmitters (21, 23) and receivers (22,24) and to send a second set of image data 810 received from receivers (22,24) to the mobile control unit 2a.
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公开(公告)号：US09992855B2
公开(公告)日：2018-06-05
申请号：US14658943
申请日：2015-03-16
CPC分类号： H05G1/58 , G01N2223/419 , H05G1/32
摘要： Rise times and fall times provided by a high voltage generator are controlled to maintain image quality during such scans. The rise and fall times are controlled by first measuring rise and fall times at each transition. Then, a closed-loop controller is used to adjust control parameters of the high voltage generator, based on an error determined from the measurement, to achieve substantially constant rise and fall times. This invention may be based on the implementation of two closed-loop controllers on rise and fall time of fast-kV exposures. As a result, image quality may be improved and system calibration time may be reduced.
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公开(公告)号：US09980697B2
公开(公告)日：2018-05-29
申请号：US14980284
申请日：2015-12-28
发明人： Denis Dujmic
摘要： Systems and methods presented herein provide corrections for fluctuations in dose or energy of radiation sources including x-ray radiation sources. The corrections can be applied to improve the quality of transmission radiography data or other radiation imagery or to facilitate feedback control of a radiation source to improve stability.
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公开(公告)号：US20180139828A1
公开(公告)日：2018-05-17
申请号：US15797212
申请日：2017-10-30
发明人： Junya Kawase , Yoichi Ando
IPC分类号： H05G1/32
摘要： An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
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公开(公告)号：US09974153B2
公开(公告)日：2018-05-15
申请号：US14864620
申请日：2015-09-24
发明人： Zhewen Jiang
摘要： A method for controlling filament current of a computed tomography (CT) tube includes: detecting a present tube current of the CT tube and assigning the present tube current to a feedback value, calculating a difference between a set value of the tube current and the feedback value and assigning the difference to an error value, assigning a target upper bound value to a present filament current when the error value is greater than an first error threshold, and assigning a target lower bound value to the present filament current when the error value is less than a second error threshold, wherein the target upper bound value is greater than the target lower bound value, the first error threshold is greater than 0, and the second error threshold is less than 0.
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公开(公告)号：US20180063932A1
公开(公告)日：2018-03-01
申请号：US15683502
申请日：2017-08-22
申请人： Michael Leibl
发明人： Michael Leibl
CPC分类号： H05G1/12 , H02M3/33569 , H05G1/32
摘要： A high-voltage generator for an X-ray device includes an input-side inverter unit, an output-side rectifier unit and a transformer connected between the inverter unit and the rectifier unit. The inverter unit is configured to generate two inverter voltages that are phase-shifted with respect to each other. These inverter voltages are transformed by the transformer into two rectifier voltages that are fed to the rectifier unit such that in no-load operation, one of the two rectifier voltages is proportional to the sum of the inverter voltages while the other of the two rectifier voltages is proportional to the difference between the inverter voltages.
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公开(公告)号：US20180005796A1
公开(公告)日：2018-01-04
申请号：US15596303
申请日：2017-05-16
申请人： Nanox Imaging PLC
发明人： Koichi IIDA , Jun Yamasaki
摘要： The X-ray tube disclosed herein includes an electron emission part including an electron emission element using a cold cathode; an anode part having an anode surface with which an electron emitted from the electron emission part collides; and a focusing structure disposed between the electron emission part and a target part disposed on the anode surface. The focusing structure has a plurality of focal point areas that are applied with a voltage in a mutually independent manner. The electron emission part has first and second electron beam emission areas that are on/off controlled in a mutually independent manner. The X-ray tube is designed in such a way that a collision area of the electron beam emitted from each of the first and second electron beam emission areas on the anode surface moves in response to a voltage applied to the focusing structure.
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公开(公告)号：US20170347438A1
公开(公告)日：2017-11-30
申请号：US15459661
申请日：2017-03-15
发明人： Jun Tae KANG , Yoon-Ho SONG , Jin-Woo JEONG
CPC分类号： H05G1/34 , H01J35/065 , H05G1/10 , H05G1/32
摘要： Provided is an X-ray generator including a thermal electron emission type X-ray generator configured to generate a negative high voltage and a filament current, a field electron emission type X-ray generator including an anode electrode to be grounded, and configured to use the negative high voltage to bias the cathode electrode, and a field emission current control unit configured to convert the filament current to generate an output voltage to be provided to a gate electrode of the field electron emission type X-ray generator and convert the filament current to fix, to a specific level, a level of an emission current flowing through the cathode electrode.
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