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41. 发明申请

US20050163284A1 X-ray generator 有权
标题翻译： X光发生器
公开(公告)号：US20050163284A1
公开(公告)日：2005-07-28
申请号：US10513610
申请日：2003-04-25
申请人： Tutomu Inazuru
发明人： Tutomu Inazuru
IPC分类号： G01N23/04 , G21K5/00 , G21K5/02 , H01J35/18 , H05G1/26 , H05G1/30 , H05G1/36 , H05G1/44 , G21G4/00 , H01J35/00 , H05H1/00
CPC分类号： H05G1/30 , G01N23/04 , H05G1/36
摘要： An X-ray generator of this invention has an X-ray monitor that monitors a state of an X-ray emitted from a target. Hence the state of the X-ray can be monitored in real time to maintain the X-ray in a constant state. The X-ray monitor is positioned off the path on which an X-ray transmitted from a first exit window travels. Hence, when the X-ray is emitted from the first exit window to an object to be inspected, the X-ray monitor does not obstruct the approaching of the object to the first exit window. This makes it possible to acquire X-ray images of high magnification.
摘要翻译：本发明的X射线发生器具有监视从目标射出的X射线状态的X射线监视器。因此，可以实时监测X射线的状态，以将X射线维持在恒定状态。 X射线监视器位于从第一出口窗口传播的X射线行进的路径上。因此，当X射线从第一出射窗口发射到被检查物体时，X射线监视器不妨碍物体接近第一出射窗口。这使得可以获取高倍率的X射线图像。

42. 发明申请

US20050152498A1 Exposure calculation method and radiography system 有权
标题翻译：曝光计算方法和射线照相系统
公开(公告)号：US20050152498A1
公开(公告)日：2005-07-14
申请号：US11017257
申请日：2004-12-20
申请人： Naresh Mungilwar
发明人： Naresh Mungilwar
IPC分类号： A61B6/00 , G01T1/00 , G21K1/04 , H05G1/30 , H05G1/38 , H05G1/42
CPC分类号： A61B6/542 , G21K1/04 , H05G1/38
摘要： A method of calculating an exposure a patient receives during radiography includes retrieving a value of a dose rate, which is associated with a value of the tube voltage of an X-ray tube, from a first lookup table that is created in advance, retrieving a value of an area of an X-ray field, which is associated with a value indicating the positions of blades included in a collimator that limits a range of X-ray radiation, from a second lookup table that is created in advance, and calculating the product of the dose rate, the area of the X-ray field, the tube current of said X-ray tube, and an X-irradiation time.
摘要翻译：计算患者在放射线照相期间接收的曝光的方法包括从预先创建的第一查找表中检索与X射线管的管电压的值相关联的剂量率的值，检索与预先创建的第二查找表相关联的与指示包括在限制X射线辐射范围的准直器中的刀片的位置的值相关联的X射线场的区域的值，并且计算 X射线场的面积，X射线管的管电流和X射线照射时间的乘积。

43. 发明申请

US20050147148A1 Control circuit for controlling an electron-emitting device 有权
标题翻译：用于控制电子发射器件的控制电路
公开(公告)号：US20050147148A1
公开(公告)日：2005-07-07
申请号：US11070741
申请日：2005-03-01
申请人： Jorg Eichholz
发明人： Jorg Eichholz
IPC分类号： G09G3/22 , H05G1/30 , H01S3/30 , H01S3/09
CPC分类号： B82Y10/00 , G09G3/22 , H01J2201/30469 , H01J2237/0635 , H01J2237/065 , H05G1/30
摘要： A control circuit for controlling an electron-emitting device is formed to draw, with a voltage applied, an excitation current being related to a number of electrons emitted. The inventive control circuit includes a first determinator for determining whether an amount of charge transported by the excitation current has reached a predetermined charge threshold value, a second determinator for determining whether a magnitude of the excitation current has reached a predetermined current threshold value, and a switch for switching off the excitation current as soon as the first determinator determines that the amount of charge has reached a predetermined charge threshold value, or as soon as the second determinator determines that the magnitude of the excitation current is smaller than the predetermined current threshold value. The control circuit allows the usage of, for example, CNT arrays for irradiation and operates on the basis of the current drawn by the electron-emitting device, which makes possible a simple setup.
摘要翻译：形成用于控制电子发射器件的控制电路，以施加电压来绘制与所发射的电子数量有关的激励电流。本发明的控制电路包括用于确定由激励电流传输的电荷量是否已经达到预定充电阈值的第一确定器，用于确定励磁电流的大小是否已经达到预定电流阈值的第二确定器，以及一旦第一确定器确定电荷量已经达到预定的充电阈值，或者一旦第二确定器确定激励电流的大小小于预定的电流阈值，一旦关闭激励电流。控制电路允许使用例如CNT阵列进行照射，并且基于由电子发射器件绘制的电流进行操作，这使得可以进行简单的设置。

44. 发明授权

US06904127B2 System and method of medical imaging having default noise index override capability 有权
标题翻译：具有默认噪声指数覆盖能力的医学成像系统和方法
公开(公告)号：US06904127B2
公开(公告)日：2005-06-07
申请号：US09683128
申请日：2001-11-21
申请人： Thomas L. Toth , Robert F. Senzig , Stanley H. Fox , Robert Harry Armstrong
发明人： Thomas L. Toth , Robert F. Senzig , Stanley H. Fox , Robert Harry Armstrong
IPC分类号： H05G1/30 , A61B6/03 , H05G1/34
CPC分类号： A61B6/465 , A61B6/032 , A61B6/583
摘要： A system and method of medical imaging is designed to reduce a patient's X-ray exposure during scanning. The system automatically generates a default noise index from a received set of scan parameter values that specifies a desired tube current of an X-ray source to use during the scanning of a patient. The default noise index can then be overridden to select a preferred noise index based upon a desired diagnostic quality for a particular volume of interest (VOI) and a diagnostic objective.
摘要翻译：医学成像的系统和方法被设计为在扫描期间减少患者的X射线暴露。该系统从接收到的扫描参数值组中自动生成默认噪声指数，该组指定在扫描患者期间使用的X射线源的期望管电流。然后可以覆盖默认噪声指数，以基于特定感兴趣体积（VOI）和诊断目标的期望诊断质量来选择优选的噪声指数。

45. 发明授权

US06895078B2 X-ray examination apparatus with exposure control 有权
公开(公告)号：US06895078B2
公开(公告)日：2005-05-17
申请号：US10395785
申请日：2003-03-24
申请人： Peter Lex Alving , Albert Louw Faber
发明人： Peter Lex Alving , Albert Louw Faber
IPC分类号： H05G1/38 , A61B6/00 , H05G1/30 , H05G1/42 , H05G1/44 , H05G1/46 , H05G1/58 , H05G1/64
CPC分类号： H05G1/46 , A61B6/488 , A61B6/542 , H04N5/32 , H05G1/30 , H05G1/42 , H05G1/44
摘要： An X-ray examination apparatus includes an X-ray source, an X-ray detector and an exposure control system. The exposure control system is arranged to control the X-ray source so as to perform a test exposure at a low X-ray dose and to perform an X-ray exposure at a higher X-ray dose. The X-ray detector applies a control signal resulting from the test exposure to the exposure control system and the X-ray source is adjusted on the basis of this control signal. The X-ray exposure produces an X-ray image and the X-ray detector supplies an image signal representing this X-ray image. The exposure control system is arranged to adjust the X-ray detector to a low spatial resolution during the test exposure and to a high spatial resolution during the X-ray exposure. The X-ray detector preferably includes a sensor matrix having sensor elements arranged in columns and rows. The spatial resolution is adjusted by deriving the control signal and the image signal from large and small groups of sensor elements, respectively.

46. 发明授权

US06879660B2 Method and apparatus for reducing spectrally-sensitive artifacts 有权
标题翻译：降低光谱敏感人造物的方法和装置
公开(公告)号：US06879660B2
公开(公告)日：2005-04-12
申请号：US10323801
申请日：2002-12-18
申请人： Paritosh Jayant Dhawale , Douglas Albagli
发明人： Paritosh Jayant Dhawale , Douglas Albagli
IPC分类号： A61B6/00 , G01D18/00 , G01T1/36 , G06T1/00 , G06T5/00 , G06T5/40 , H04N5/32 , H05G1/30 , H05G1/64
CPC分类号： A61B6/583 , A61B6/482 , A61B6/502 , A61B6/585 , G06T5/009 , G06T2207/10116
摘要： A technique is provided in which a gain correction map derived for a detector at one X-ray spectrum may be adapted to accommodate images acquired by the detector at a different X-ray spectrum. The technique accounts for the physical variations in the detector which may produce spectrally-sensitive artifacts as well as for the particular image acquisition conditions. A technique is also provided for correcting edge artifacts in an acquired image by measuring median signal intensity within columns or rows of the image and deriving correction factors for the respective edge columns or rows based upon the trends of the median signal intensities. A technique is also provided for storing detector attributes during a manufacturing calibration process and accessing them during system operation such that a suitable gain correction factor is employed based upon the spectrum and operating conditions.
摘要翻译：提供了一种技术，其中针对一个X射线光谱的检测器导出的增益校正图可以适于容纳由不同X射线光谱由检测器获取的图像。该技术解决了检测器中的物理变化，其可能产生光谱敏感的伪影以及特定的图像采集条件。还提供了一种技术，用于通过测量图像的列或行内的中值信号强度来校正所获取的图像中的边缘伪影，并且基于中值信号强度的趋势导出相应边缘列或行的校正因子。还提供了一种用于在制造校准过程期间存储检测器属性并在系统操作期间访问它们的技术，使得基于频谱和操作条件采用合适的增益校正因子。

47. 发明授权

US6088425A X-ray apparatus 失效
标题翻译： X光装置
公开(公告)号：US6088425A
公开(公告)日：2000-07-11
申请号：US53130
申请日：1998-04-01
申请人： Katsuhiro Ono
发明人： Katsuhiro Ono
IPC分类号： H05G1/30 , A61B6/03 , G21K5/02 , G21K5/08 , H01J35/10 , H05G1/26 , H05G1/36 , H05G1/66
CPC分类号： H05G1/36 , H05G1/26
摘要： A rotary anode type X-ray tube is controlled by an X-ray emission control device. In the X-ray emission control device, the maximum permissible storage heat quantity which can be applied to the rotary anode of the X-ray tube is set, the anode storage heat quantity which is lowered based on the cooling characteristic of the rotary anode is calculated, the present anode storage heat quantity is calculated, and the imaginary anode storage heat quantity for the next X-ray emitting condition which is derived by calculation using the correction functions based on the anode input power, emission continuation time, anode rotation speed and focal point size, the anode input power of the next predicted X-ray emission, and X-ray emission continuation time is calculated. The maximum permissible storage heat quantity, the present anode storage heat quantity and the imaginary anode storage heat quantity in the next X-ray emitting condition are compared and calculated to determine permission or inhibition of the next X-ray emission. The performance of the mounted X-ray tube is fully utilized by use of the X-ray emission control device, the wait time to the next X-ray emission can always be suppressed to minimum, and the X-ray tube apparatus can be controlled with high speed and high reliability.
摘要翻译：旋转阳极型X射线管由X射线发射控制装置控制。在X射线发射控制装置中，设定能够施加到X射线管的旋转阳极的最大容许积存热量，基于旋转阳极的冷却特性而降低的阳极储存热量为计算出当前的阳极储存热量，并且通过使用基于阳极输入功率，发射持续时间，阳极转速和基于阳极的输入功率的校正功能计算导出的下一个X射线发射条件的虚拟阳极储存热量计算焦点尺寸，下一预测X射线发射的阳极输入功率和X射线发射持续时间。比较并计算下一个X射线发射条件下的最大允许存储热量，当前阳极储存热量和虚拟阳极储存热量，以确定下一个X射线发射的允许或抑制。通过使用X射线发射控制装置可充分利用安装的X射线管的性能，可以总是将下一个X射线发射的等待时间抑制到最小，并且可以控制X射线管装置具有高速度和高可靠性。

48. 发明授权

US5737386A Computer for an x-ray machine 失效
标题翻译：计算机用于X光机
公开(公告)号：US5737386A
公开(公告)日：1998-04-07
申请号：US657950
申请日：1996-06-04
申请人： Glenn G. Strawder
发明人： Glenn G. Strawder
IPC分类号： A61B6/00 , H05G1/30 , H05G1/46 , H05G1/10
CPC分类号： A61B6/545 , A61B6/00 , A61B6/542 , H05G1/30 , H05G1/46
摘要： A computer is provided for calculating input data for an X-ray machine which is about to be used for making an X-ray of a body part. The computer has a multiplicity of input devices each dedicated to inputting particular information that should enter into the input information for an X-ray machine including a series of input devices each dedicated to one pathological disease that the body to be X-rayed may have, input devices dedicated to particular body parts, and an input device dedicated to body part thickness. A program causes the computer to compute the input data for the X-ray machine based on the information fed to the computer via the input devices.
摘要翻译：提供一种计算机，用于计算将要用于制作身体部位的X射线的X射线机的输入数据。计算机具有多个输入设备，每个输入设备专用于输入应当输入X射线机的输入信息的特定信息，该X射线机包括一系列输入设备，每个输入设备专用于要被X射线照射的身体可能具有的一种病理疾病，专用于特定身体部位的输入装置和专用于身体部分厚度的输入装置。程序使得计算机基于通过输入设备馈送到计算机的信息来计算X射线机的输入数据。

49. 发明授权

US5734694A Universal radiographic room 失效
公开(公告)号：US5734694A
公开(公告)日：1998-03-31
申请号：US728082
申请日：1996-10-09
申请人： Oscar Khutoryansky , Dennis Bleser , Allan Kojro , Thomas Simak , Thomas Rosevear
发明人： Oscar Khutoryansky , Dennis Bleser , Allan Kojro , Thomas Simak , Thomas Rosevear
IPC分类号： A61B6/00 , A61B6/02 , A61B6/06 , H05G1/30 , H05G1/02
CPC分类号： A61B6/4464 , A61B6/4283 , A61B6/467 , A61B6/547 , A61B6/548 , A61B6/588 , H05G1/30
摘要： A universal radiographic apparatus that allows an operator to select between conventional radiographic mode and linear tomographic mode. In conventional radiographic mode of operation, several automatic modes are provided. An x-ray tube mounted to a tube crane positioned above an elevating table can be accurately controlled in longitudinal and vertical movement, as well as in x-ray tube angulation. In linear tomographic mode, a table bucky is moved laterally in opposition to movement of the tube crane, with angulation keeping the tube aimed at the bucky. In conventional radiographic mode, the system supports an auto bucky mode, where the table bucky automatically tracks tubecrane motion, or an auto table mode, where the tube crane tracks table vertical motion to maintain a fixed SID. In an auto wall mode, the tube crane tracks vertical movement of an associated wall bucky.

50. 发明授权

US5485494A Modulation of X-ray tube current during CT scanning 失效
标题翻译： CT扫描期间X射线管电流的调制
公开(公告)号：US5485494A
公开(公告)日：1996-01-16
申请号：US285253
申请日：1994-08-03
申请人： Kenneth R. Williams , Herbert K. Koehl , Jonathan R. Schmidt
发明人： Kenneth R. Williams , Herbert K. Koehl , Jonathan R. Schmidt
IPC分类号： H05G1/30 , A61B6/03 , H05G1/26 , H05G1/34 , A61B6/00
CPC分类号： H05G1/34 , A61B6/032 , A61B6/405 , A61B6/4078 , A61B6/488 , A61B6/542 , H05G1/26 , A61B6/548
摘要： An x-ray CT system modulates x-ray tube current as a function of gantry angle to reduce the total patient dose without significantly increasing image noise. A modulation waveform is stored in a table as a function of gantry angle, and during a slice acquisition, values are periodically read from this table and employed to calculate tube current commands. Tube current is monitored and compared with the latest command to ensure the proper x-ray dose is applied.
摘要翻译： X射线CT系统调制x射线管电流作为台架角度的函数，以减少总患者剂量而不显着增加图像噪声。调制波形作为台架角度的函数存储在表中，并且在片采集期间，周期性地从该表读取值并用于计算管电流命令。监测管电流并与最新的命令进行比较，以确保施加适当的x射线剂量。

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