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公开(公告)号：US5109860A
公开(公告)日：1992-05-05
申请号：US368338
申请日：1989-07-17
摘要： A curved bar probe (1) for an echograph is fabricated by using a thin support (2) on which is placed a bar of piezoelectric crystal. The bar is divided into a plurality of piezoelectric transducers elements (3). The thin support presents the particularity of being rigid at room temperature but is thermodeformable. By subjecting it to a heating-cooling cycle during which it is given a desired curved shape, a rigid bar having an imposed curved shape is obtained. It is then possible to avoid the adhesion of said support to a base (16). This would form a back-reflecting surface for acoustic waves and would create interference harmful to the useful acoustic signal.
摘要翻译： PCT No.PCT / FR87 / 00463 Sec。 371日期：1989年7月17日 102（e）日期1989年7月17日PCT提交1987年11月24日PCT公布。 出版物WO88 / 04088 日期：1988年6月2日。用于回波仪的弯曲杆探头（1）通过使用薄的支撑（2）制成，在其上放置有压电晶体棒。 该棒被分成多个压电换能元件（3）。 薄支撑呈现在室温下刚性但具有热可变形性的特殊性。 通过使其进行加热冷却循环，在该加热冷却循环期间，其被赋予所需的弯曲形状，获得具有施加的弯曲形状的刚性棒。 因此可以避免所述支撑件与基座（16）的粘合。 这将形成用于声波的背反射表面，并且将产生对有用的声信号有害的干扰。
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公开(公告)号：US5022060A
公开(公告)日：1991-06-04
申请号：US346599
申请日：1989-05-02
申请人： Jacques Trotel
发明人： Jacques Trotel
CPC分类号： A61B6/032
摘要： Problems related to acquistion time with reconstructed image type tomographs are resolved by causing step by step rotations of the X-ray tube/multiple detector set of this tomograph and, at each step, by causing a translational movement of this set in order to scan the entire region to be examined of a body under examination. It is shown that, by using a multiple row multidetector, it is possible, at equal speeds, to improve the quality of the images produced or, at equal quality, to increase the acquisition speed. Furthermore, this mode of operation is especially well suited to the monitoring of radiotherapy action where the practitioner, when acquiring images, needs to be able to touch the patient.
摘要翻译： 与重建的图像型断层摄影机相关的与采集时间有关的问题通过使该断层摄影机的X射线管/多重检测器组逐步旋转，并且在每个步骤中通过引起该组的平移运动来扫描 整个地区被检查的身体被检查。 显示出，通过使用多行多检测器，以相等的速度可以提高所产生的图像的质量，或者以相同的质量来提高采集速度。 此外，这种操作模式特别适用于监视放射治疗行为，其中从业者在获取图像时需要能够触及患者。
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23.发明授权
公开(公告)号：US5001618A
公开(公告)日：1991-03-19
申请号：US333025
申请日：1989-04-04
申请人： Jacques Laeuffer
发明人： Jacques Laeuffer
CPC分类号： H05G1/20 , H02M3/3155 , H05G1/32
摘要： A direct-current high voltage obtained by rippling, stepping-up and rectification of a direct-current low voltage is regulated in such a manner as to ensure that the maximum value of direct-current high voltage attains a predetermined peak value at each ripple pulse of the inverter. To this end, a following pulse of the inverter is produced as soon as the high voltage of the direct-current high-voltage signal has become lower than the predetermined peak value reduced by the measurement of a variation in said direct-current high voltage during a preceding pulse.
摘要翻译： 以直流低电压的波纹，升压和整流获得的直流高电压被调节，以确保直流高电压的最大值在每个纹波脉冲下达到预定的峰值 的变频器。 为此，一旦直流高压信号的高电压变得低于通过测量所述直流高电压的变化而减小的预定峰值，则产生逆变器的跟随脉冲 前一个脉冲。
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公开(公告)号：US4964151A
公开(公告)日：1990-10-16
申请号：US291154
申请日：1988-12-28
申请人： Jacques Trotel
发明人： Jacques Trotel
CPC分类号： A61B6/4441 , F16M11/10 , F16M11/18 , F16M11/2064 , F16M11/2092 , F16M11/28 , F16M11/42
摘要： The invention concerns an X-ray stand permitting isocentric movements and intended particularly for radio diagnosis. Stand includes a base supporting a binding clip having a first and second arm supporting respectively an X-ray source and receiver. According to a feature of the invention, binding clip includes a foot by which it is supported by the base by means of devices to move foot in a circular movement centered on an isocenter point.
摘要翻译： 本发明涉及一种允许等中心运动并且特别用于放射诊断的X射线架。 支架包括支撑具有分别支撑X射线源和接收器的第一和第二臂的装订夹的基座。 根据本发明的一个特征，装订夹具包括一个脚，通过该底座借助于脚部以一个以等角点为中心的圆周移动的装置支撑脚。
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公开(公告)号：US4964147A
公开(公告)日：1990-10-16
申请号：US297686
申请日：1989-01-17
IPC分类号： H01J35/10
CPC分类号： H01J35/10
摘要： The invention relates to an X-ray tube with a rotating anode which is driven by a magnetic bearings motor. The anodic current is outflowed by a friction-type contact device which is located inside the shaft supporting the rotor of the motor. The friction contact device is actuated so as to cut off or establish an electrical contact between an inner wall of the rotor and the friction contact device.
摘要翻译： 本发明涉及一种具有旋转阳极的X射线管，该旋转阳极由磁性轴承马达驱动。 阳极电流由位于支撑电动机的转子的轴内的摩擦式接触装置流出。 摩擦接触装置被致动以便切断或建立转子的内壁和摩擦接触装置之间的电接触。
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公开(公告)号：US4920554A
公开(公告)日：1990-04-24
申请号：US263898
申请日：1988-10-28
申请人： Emile Gabbay , Jacques Le Guen
发明人： Emile Gabbay , Jacques Le Guen
摘要： An X-ray emitting device of the X-ray unit type is disclosed, the arrangement of which simplifies maintenance problems. The emitting device has a metallic casing containing an X-ray tube and supply means. According to a feature of the invention, the X-ray tube and the supply means are contained in a first and second imperviously sealed chamber, filled with oil.
摘要翻译： 公开了一种X射线单元型的X射线发射装置，其结构简化了维护问题。 发光装置具有包含X射线管和供给装置的金属外壳。 根据本发明的特征，X射线管和供给装置容纳在充满油的第一和第二不透水密封的腔室中。
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27.发明授权Passive-decoupling receiving antenna, in particular for a nuclear magnetic resonance imaging apparatus 失效无源去耦接收天线，特别是用于核磁共振成像装置
公开(公告)号：US4857850A
公开(公告)日：1989-08-15
申请号：US189803
申请日：1988-05-03
申请人： Henri-Jose Mametsa , Herve Jacob
发明人： Henri-Jose Mametsa , Herve Jacob
CPC分类号： G01R33/3657 , G01R33/3614
摘要： An antenna for nuclear magnetic resonance imaging devices has two electromagnetic circuits connected to each other so as to produce mutual opposition of their electromotive force when they are placed in a uniform electromagnetic induction field. It is considered that a localized transmitter does not produce a uniform field. This antenna therefore makes it possible to detect this field if it comes close to this latter. On the other hand, this antenna does not present any reactive field to a transmitter in which it may be considered that the field opposite to said antenna is uniform.
摘要翻译： 用于核磁共振成像装置的天线具有彼此连接的两个电磁电路，以便当它们被放置在均匀的电磁感应场中时，它们的电动势相互产生对立。 认为本地化的发射机不产生均匀的场。 因此，如果接近该天线，则可以检测该场。 另一方面，该天线不向发射机提供任何无功场，其中可以认为与所述天线相对的场是均匀的。
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28.发明授权
公开(公告)号：US5528649A
公开(公告)日：1996-06-18
申请号：US979471
申请日：1992-11-20
申请人： Robert Heidsieck
发明人： Robert Heidsieck
CPC分类号： G01N23/083 , A61B6/583
摘要： The calibration method consists in measuring the efficiency D of a detector cell placed behind the object as a function of various phantom thicknesses E.sub.p and various X-ray tube supply voltages V.sub.m. These measurements enable an analytic model D=f(V.sub.m, E.sub.p) to be determined describing the resulting curves. The inverse function of this analytic model can be used for calculating thickness E.sub.p as a function of the measured efficiency D and the known supply voltage V.sub.m.
摘要翻译： 该校准方法在于测量放置在物体后面的检测器单元的效率D作为各种幻影厚度Ep和各种X射线管供应电压Vm的函数。 这些测量使得可以确定描述所得曲线的分析模型D = f（Vm，Ep）。 该分析模型的逆函数可用于计算厚度Ep作为测量效率D和已知电源电压Vm的函数。
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公开(公告)号：US5149074A
公开(公告)日：1992-09-22
申请号：US683492
申请日：1991-04-10
申请人： Jean-Pierre Jarin
发明人： Jean-Pierre Jarin
IPC分类号： A61B6/04
CPC分类号： A61B6/04
摘要： The vertical displacement of a patient support table for a radiology apparatus is obtained by means of an electromechanical device constituted by arms which are connected to each other and to the support table by means of powered articulations with synchronized movements of rotation. A relatively small minimum height of the order of 60 centimeters is thus obtained.
摘要翻译： 用于放射学装置的患者支撑台的垂直位移通过由臂组成的机电装置获得，所述机械装置通过具有同步旋转运动的动力关节彼此连接并连接到支撑台。 因此获得了60厘米数量级的较小的最小高度。
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公开(公告)号：US5107367A
公开(公告)日：1992-04-21
申请号：US499942
申请日：1990-03-27
申请人： Valerie Desnoux , Jean Pelat , Michel Thirouard
发明人： Valerie Desnoux , Jean Pelat , Michel Thirouard
IPC分类号： G02B26/08
CPC分类号： G02B26/0816
摘要： An optical distributor for deflecting a light beam in different directions comprises a single semi-reflecting mirror 30 carried by a motor-driven turntable 31. The mirror is capable of pivoting about an axis 33 when a stop 46 is withdrawn (position Z of the notch and of the stud 38) and of taking up a position 52 in which it does not intercept the light beam 14. in the other positions (X and Y), the mirror intercepts the beam 14 and deflects it in the desired directions.
摘要翻译： 用于在不同方向上偏转光束的光学分配器包括由电动机驱动的转盘31承载的单个半反射镜30.当止动件46被拉出时，反射镜能够围绕轴线33枢转（凹口的位置Z 并且在其他位置（X和Y）中拾取位置52，在其中它不会遮挡光束14.镜子拦截光束14并使其沿期望的方向偏转。
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