专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US09265135B2 Method and apparatus for heating current control of a pulsed X-ray tube 有权
标题翻译：用于加热脉冲X射线管电流控制的方法和装置
公开(公告)号：US09265135B2
公开(公告)日：2016-02-16
申请号：US14151591
申请日：2014-01-09
申请人： Rudolf Auernhammer , Andreas Böhme , Johannes Walk
发明人： Rudolf Auernhammer , Andreas Böhme , Johannes Walk
IPC分类号： H05G1/34 , H05G1/30 , H05G1/26
CPC分类号： H05G1/34
摘要： A method and an associated apparatus for controlling a heating current flowing through an emitter of a pulsed X-ray tube during pulse pauses are provided. The heating current is controlled by comparing a measured actual value of the heating current with a predefinable desired value of the heating current. A low-pass filtering of the actual value of the heating current is effected before the comparison. A time constant of the low-pass filtering is equal to a thermal time constant of the emitter. A correction of the actual value of the heating current is provided before the low-pass filtering by a first correction value. The first correction value is determined such that a tube current control during the pulses is not compensated for by the heating current control in the pulse pauses.
摘要翻译：提供了一种用于在脉冲暂停期间控制流过脉冲X射线管的发射器的加热电流的方法和相关联的装置。通过将加热电流的测量实际值与加热电流的预定的期望值进行比较来控制加热电流。在比较之前进行加热电流的实际值的低通滤波。低通滤波的时间常数等于发射极的热时间常数。在低通滤波前提供加热电流的实际值的校正第一校正值。第一校正值被确定为使得在脉冲期间的管电流控制不被脉冲暂停中的加热电流控制补偿。

12. 发明授权

US07970098B2 Medical imaging method and apparatus allowing localized image quality specification 有权
标题翻译：允许本地化图像质量规范的医学成像方法和装置
公开(公告)号：US07970098B2
公开(公告)日：2011-06-28
申请号：US12406196
申请日：2009-03-18
申请人： Gabriel Haras
发明人： Gabriel Haras
IPC分类号： H05G1/34 , H05G1/36
CPC分类号： A61B6/032 , A61B5/055 , A61B5/417 , A61B6/4441 , A61B6/463 , A61B6/466 , A61B6/469 , A61B6/488 , A61B6/503 , A61B6/542 , A61B6/545 , G06F19/00
摘要： In a method and device for medical imaging, a number of input parameters with regard to an image exposure are imported into a controller of the imaging device, that associate a desired image quality with a defined image exposure region. A number of control parameters are determined corresponding to each input parameter. The controller supplies each control parameter to the image acquisition apparatus for acquiring the image exposure of the examination region with the desired local image quality.
摘要翻译：在用于医学成像的方法和装置中，关于图像曝光的多个输入参数被导入到成像装置的控制器中，其将期望的图像质量与定义的图像曝光区域相关联。对应于每个输入参数确定多个控制参数。控制器将每个控制参数提供给图像获取装置，以获得具有所需局部图像质量的检查区域的图像曝光。

13. 发明授权

US07636416B2 X-ray CT apparatus comprising a tube current control unit 有权
标题翻译： X射线CT装置包括管电流控制单元
公开(公告)号：US07636416B2
公开(公告)日：2009-12-22
申请号：US11884099
申请日：2006-02-27
申请人： Osamu Miyazaki , Koichi Hirokawa , Toshiyuki Irie
发明人： Osamu Miyazaki , Koichi Hirokawa , Toshiyuki Irie
IPC分类号： H05G1/34
CPC分类号： A61B6/032 , A61B6/542
摘要： An X-ray CT apparatus includes a projection data analysis part that reconstructs a tomographic image at an imaging portion of the object used for analysis from the projection data and produces a control profile by reprojecting the reconstructed tomographic image, and a tube current control part that controls value of current to be fed to the X-ray tube based on the produced control profile.
摘要翻译： X射线CT装置包括投影数据分析部，其从投影数据重建用于分析对象的成像部分的断层图像，并通过重新投影重建的断层图像产生控制轮廓;以及管电流控制部，基于所生产的控制轮廓控制要供给到X射线管的电流值。

14. 发明授权

US07023960B2 Method of adjusting the emission rate of radiation from a source of radiation 失效
标题翻译：调整辐射源辐射发射率的方法
公开(公告)号：US07023960B2
公开(公告)日：2006-04-04
申请号：US10753834
申请日：2004-01-08
申请人： Patrick Chretien
发明人： Patrick Chretien
IPC分类号： H05G1/34 , H05G1/32
CPC分类号： H05G1/34
摘要： To adjust the emission rate of radiation from an X-ray tube, the value of the current of the X-ray tube is modeled empirically by a second-order polynomial function depending on the heating current and a first-order polynomial function depending on the high voltage. A transfer function gives precision closer than 3% for the adjusting of an expected tube current. This function can also be used to take account of disparities of manufacture and of the aging of the tubes in use.
摘要翻译：为了调整来自X射线管的放射线的发射率，X射线管的电流值根据加热电流的二阶多项式函数和根据加热电流的一阶多项式函数经验地建模高压。传递函数的精度比预期的管电流的调整精度更接近3％。该功能也可以用于考虑制造的差异和使用中的管的老化。

15. 发明申请

US20050238140A1 X-ray imaging system with automatic image resolution enhancement 审中-公开
标题翻译：具有自动图像分辨率增强的X射线成像系统
公开(公告)号：US20050238140A1
公开(公告)日：2005-10-27
申请号：US10644206
申请日：2003-08-20
申请人： Dan Hardesty
发明人： Dan Hardesty
IPC分类号： A61B20060101 , A61B6/00 , G01N23/00 , G01N23/04 , G21K1/12 , H05G1/34 , H05G1/50 , H05G1/60
CPC分类号： G01N23/04 , A61B6/482 , A61B6/502 , A61B6/542 , G01N2223/206
摘要： An automated X-ray imaging system and method for producing a plurality of X-ray imaging signals having selectively enhanced image resolutions, e.g., for magnifying the field of view and providing a display image having features not otherwise visible to an unaided human eye. Successive doses of X-ray radiation are applied to a portion of the subject to produce corresponding image signals. Such doses of X-ray radiation are controlled by controlling X-ray radiation characteristics, such as intensity, focal spot size, focal spot location, focal spot shape, or collimation, to cause a subsequent image signal to differ from a prior image signal in one or more image characteristics, such as image resolution.
摘要翻译：一种用于产生具有选择性增强的图像分辨率的多个X射线成像信号的自动X射线成像系统和方法，例如用于放大视场并提供具有不可见的肉眼无特征的特征的显示图像。连续剂量的X射线辐射被施加到受试者的一部分以产生相应的图像信号。通过控制诸如强度，焦斑尺寸，焦点位置，焦点形状或准直的X射线辐射特性来控制这种剂量的X射线辐射，以使随后的图像信号与先前的图像信号不同一个或多个图像特征，如图像分辨率。

16. 发明授权

US06876724B2 Large-area individually addressable multi-beam x-ray system and method of forming same 有权
标题翻译：大面积单独寻址多光束x射线系统及其形成方法
公开(公告)号：US06876724B2
公开(公告)日：2005-04-05
申请号：US10051183
申请日：2002-01-22
申请人： Otto Z. Zhou , Jianping Lu , Qi Qiu
发明人： Otto Z. Zhou , Jianping Lu , Qi Qiu
IPC分类号： A61B6/03 , A61B6/00 , G21K5/02 , G21K5/08 , H01J35/06 , H01J35/08 , H01J35/16 , H01J35/24 , H05G1/00 , H05G1/34 , H01J36/06
CPC分类号： H01J35/14 , A61B6/032 , A61B6/4028 , B82Y10/00 , H01J35/065 , H01J35/22 , H01J2201/30469 , H01J2235/064 , H01J2235/068 , H05G1/34
摘要： A structure to generate x-rays has a plurality of stationary and individually electrically addressable field emissive electron sources with a substrate composed of a field emissive material, such as carbon nanotubes. Electrically switching the field emissive electron sources at a predetermined frequency field emits electrons in a programmable sequence toward an incidence point on a target. The generated x-rays correspond in frequency and in position to that of the field emissive electron source. The large-area target and array or matrix of emitters can image objects from different positions and/or angles without moving the object or the structure and can produce a three dimensional image. The x-ray system is suitable for a variety of applications including industrial inspection/quality control, analytical instrumentation, security systems such as airport security inspection systems, and medical imaging, such as computed tomography.
摘要翻译：产生X射线的结构具有多个静电和单独可电寻址的场发射电子源，其具有由诸如碳纳米管的场发射材料组成的衬底。以预定频率电场电场切换场致发射电子源以可编程序列朝向目标上的入射点发射电子。产生的x射线的频率和位置与场发射电子源的频率和位置相对应。发射器的大面积目标和阵列或矩阵可以对来自不同位置和/或角度的物体进行成像，而不移动物体或结构，并可产生三维图像。 x射线系统适用于各种应用，包括工业检测/质量控制，分析仪器，机场安全检查系统等安全系统和计算机断层扫描等医学成像。

17. 发明申请

US20050013409A1 Method of controlling X-ray and X-ray apparatus therefor 失效
标题翻译：控制X射线及其X射线装置的方法
公开(公告)号：US20050013409A1
公开(公告)日：2005-01-20
申请号：US10892439
申请日：2004-07-16
申请人： Rolf Adler , Michael Dalpiaz
发明人： Rolf Adler , Michael Dalpiaz
IPC分类号： H05G1/10 , H05G1/30 , H05G1/34 , H05G1/38 , H05G1/46 , H05G1/50
CPC分类号： H05G1/38
摘要： The invention relates to a method of controlling an X-ray apparatus containing an X-ray emitter. Control means for the X-ray apparatus are provided with exposure time correction data for given mains voltages and the current mains voltage is measured before and/or during exposure and the exposure time is corrected in accordance with the correction data, and to an X-ray apparatus for carrying out said method.
摘要翻译：本发明涉及一种控制含有X射线发射器的X射线装置的方法。对于X射线设备的控制装置设置有用于给定电源电压的曝光时间校正数据，并且在曝光之前和/或曝光期间测量当前电源电压，并且根据校正数据校正曝光时间，用于执行所述方法。

18. 发明授权

US6111933A X-ray device including a piezoelectric transformer 失效
标题翻译：包括压电变压器的X射线装置
公开(公告)号：US6111933A
公开(公告)日：2000-08-29
申请号：US9998
申请日：1998-01-21
申请人： Uwe Schaaf , Heinz Van Der Broeck , Martin Wimmer , Arne Lunding , Reinhard v. Hacht , Diethard Peter
发明人： Uwe Schaaf , Heinz Van Der Broeck , Martin Wimmer , Arne Lunding , Reinhard v. Hacht , Diethard Peter
IPC分类号： H05G1/34 , H01L41/107 , H05G1/10 , H01J35/30
CPC分类号： H01L41/107 , H05G1/10
摘要： In an X-ray device which includes an X-ray tube (12) provided with means (15, 22, 23) for influencing the electron flow through the X-ray tube (12), a control voltage for the means for influencing the electron flow is customarily generated by means of a complex circuit which, because of its size, is not suitable to be accommodated within the protective tube housing. This has the drawback that the control voltage for the X-ray tube, usually of high voltage potential, must be supplied additionally to the high-voltage supply. Therefore, it is desirable to realize a simple generation means the control voltage which is suitable for accommodation in the protective tube housing. To this end, the invention proposes a piezoelectric transformer (21, 24, 25) for generating the control voltage for the X-ray tube. The invention also relates to a piezoelectric transformer which is particularly suitable for generating such a control voltage.
摘要翻译：在包括设置有用于影响通过X射线管（12）的电子流的装置（15,22,23）的X射线管（12）的X射线装置中，用于影响通常由复合电路产生电子流，因为它的尺寸不适于容纳在保护管外壳内。这具有通常具有高电压电位的X射线管的控制电压必须另外提供给高压电源的缺点。因此，希望实现简单的生成是指适合于保护管壳体中的调节的控制电压。为此，本发明提出了一种用于产生X射线管的控制电压的压电变压器（21,24,25）。本发明还涉及一种特别适于产生这种控制电压的压电变压器。

19. 发明授权

US5878109A X-ray apparatus 失效
标题翻译： X光装置
公开(公告)号：US5878109A
公开(公告)日：1999-03-02
申请号：US862020
申请日：1997-05-22
申请人： Hans Negle , Martin Wimmer
发明人： Hans Negle , Martin Wimmer
IPC分类号： G21K5/02 , H05G1/06 , H05G1/08 , H05G1/10 , H05G1/34
CPC分类号： H05G1/10 , H05G1/06
摘要： An X-ray apparatus includes an X-ray source with an X-ray tube (2) arranged in a protective tube housing (1) and a filament converter which is connected to the cathode (3) of the X-ray tube (2) and accommodated in the protective tube housing (1). Because of its volume, the filament converter usually cannot be accommodated in the protective tube housing (1) of conventional X-ray apparatus unless major structural modifications are made. However, the use of attenuated high-voltage cables at the cathode side is then impossible still. The invention utilizes a filament converter in the form of a coreless filament transformer (14, 15, 16, 17) and the primary coil (14, 16) of the filament transformer is arranged so as to be coaxial with the secondary coil (15, 17) of the filament transformer. Moreover, the two coils are arranged around a carrier (5, 10), which is preferably the high-voltage connection socket (10) or the tube neck (5). This is an inexpensive and structurally simple solution which enables integration of the filament converter in the protective tube housing (1) in conventional X-ray apparatus.
摘要翻译：一种X射线设备包括：X射线源，其具有布置在保护管壳体（1）中的X射线管（2）和灯丝转换器，其连接到X射线管（2）的阴极（3））并容纳在保护管壳体（1）中。由于其体积，除非进行主要的结构修改，灯丝转换器通常不能容纳在常规X射线设备的保护管壳体（1）中。然而，在阴极侧使用衰减的高压电缆是不可能的。本发明采用无芯丝灯丝变压器（14,15,16,17）形式的灯丝转换器，灯丝变压器的初级线圈（14,16）被布置成与次级线圈（15， 17）灯丝变压器。此外，两个线圈围绕载体（5,10）布置，优选为高压连接插座（10）或管颈（5）。这是一种便宜且结构简单的解决方案，其能够将常规X射线设备中的灯丝转换器集成在保护管壳体（1）中。

20. 发明授权

US5664000A X-ray examination apparatus comprising an exposure control circuit 失效
标题翻译： X射线检查装置包括曝光控制电路
公开(公告)号：US5664000A
公开(公告)日：1997-09-02
申请号：US575796
申请日：1995-12-22
申请人： Johannes T.M. Van Woezik , Paulus H.F.M. Van Twist
发明人： Johannes T.M. Van Woezik , Paulus H.F.M. Van Twist
IPC分类号： H05G1/26 , H05G1/34 , H05G1/38 , H05G1/44 , H05G1/60 , H05G1/64
CPC分类号： H05G1/34 , H05G1/60
摘要： An X-ray examination apparatus includes an exposure control circuit (20) which supplies a control signal for adjustment of the X-ray source (1). The exposure control circuit (20) determines the control signal from an area of the X-ray image in which no overexposure occurs. To this end, the exposure control circuit includes a selection unit (23) for determining a measuring part from an electronic image signal, formed from the X-ray image by means of an X-ray detector (5, 8, 7), by comparing the signal level of the electronic image signal with an upper limit value which is dependent on the setting of the X-ray apparatus, for example of the high voltage and the anode current of the X-ray source. The upper limit value preferably amounts to the difference between the overexposure level and a safety margin. The safety margin serves to render the exposure control circuit insensitive to small fluctuations of the intensity and energy of the X-ray beam (3) generated by the X-ray source (1).
摘要翻译： X射线检查装置包括提供用于调整X射线源（1）的控制信号的曝光控制电路（20）。曝光控制电路（20）从不会发生过度曝光的X射线图像的区域确定控制信号。为此，曝光控制电路包括一个选择单元（23），用于通过X射线检测器（5,8,7）从X射线图像形成的电子图像信号中确定测量部分，将电子图像信号的信号电平与取决于X射线设备的设置（例如X射线源的高电压和阳极电流）的上限值进行比较。上限值优选地等于过度曝光水平和安全裕度之间的差。安全裕度用于使曝光控制电路对由X射线源（1）产生的X射线束（3）的强度和能量的小波动不敏感。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式