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1.发明授权X-ray diagnostic apparatus including means for regulating the X-ray tube voltage through the X-ray tube current 失效X射线诊断装置包括用于通过X射线管电流调节X射线管电压的装置
公开(公告)号：US3974387A
公开(公告)日：1976-08-10
申请号：US569088
申请日：1975-04-17
摘要： An X-ray diagnostic apparatus in which the X-ray tube voltage is regulated through intermediary of the X-ray tube current. In the apparatus, a regulator is situated within a regulating circuit for the effective value of the filament current of the X-ray tube, and influences the effective value of the filament current for the purpose of correlating the actual value with the reference value which has been determined through the preset X-ray tube voltage. In the inventive X-ray diagnostic apparatus, on the one hand, the actual value of the X-ray tube voltage is compared with a reference value, and the filament current is influenced for the purpose of correlating the actual value to the reference value. Furthermore, the filament current which is required for a predetermined reference value of the X-ray tube voltage is also maintained constant preceding the beginning of an exposure so that, at the initiation of an exposure, the filament current already lies at least near to the correct value. Deviations of the X-ray tube voltage from the correct value are thereby smaller than in prior art apparatus.
摘要翻译： 一种X射线诊断装置，其中X射线管电压通过X射线管电流的中介进行调节。 在该装置中，调节器位于用于X射线管的灯丝电流的有效值的调节电路内，并且影响灯丝电流的有效值，以将实际值与具有 通过预设的X射线管电压来确定。 在本发明的X射线诊断装置中，一方面将X射线管电压的实际值与参考值进行比较，并且为了将实际值与参考值相关联，影响灯丝电流。 此外，X射线管电压的预定参考值所需的灯丝电流在曝光开始之前也保持恒定，使得在曝光开始时，灯丝电流已经至少接近于 正确的价值。 因此，X射线管电压与正确值的偏差比现有技术的装置小。
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公开(公告)号：US4039812A
公开(公告)日：1977-08-02
申请号：US631154
申请日：1975-11-11
申请人： Ulrich Grassme , Eickhardt Soder
发明人： Ulrich Grassme , Eickhardt Soder
CPC分类号： H05G1/34
摘要： An X-ray diagnostic apparatus having an adjustable mAs-relay for determining the exposure time. The adjustable mAs-relay is used for determining the exposure time, wherein the X-ray tube voltage and the X-ray tube current are varied in conformance with the fluctuations of the voltage supply. An operational amplifier may be employed, whose characteristics may, in a simple manner, be coordinated with the desired cycle of the mAs-product, in dependence upon the voltage supply. Additional auxiliary components for the voltage supply correlation are not required in the inventive arrangement.
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公开(公告)号：US4063099A
公开(公告)日：1977-12-13
申请号：US679501
申请日：1976-04-22
申请人： Ulrich Grassme
发明人： Ulrich Grassme
CPC分类号： G03B42/042 , A61B6/14 , H05G1/46
摘要： A dental apparatus for x-ray diagnosis comprises a unit, which includes an x-ray tube and a film holder and is adapted to rotate around a vertical axis, and a support for the head of a patient disposed between the x-ray tube and the film carrier. The apparatus produces general tomograms with a radiographic recording time which is predetermined by a timer mechanism of the x-ray tube/film carrier unit, and by at least one further recording value which is adjustable by a regulating device to provide a nominal or reference recording value. The unit further comprises an x-ray detector disposed on the film carrier in a position in which the detector receives at least the x-ray radiation penetrating the jaw of the patient during the entire duration of an x-ray recording, during which period the detector supplies an electrical signal corresponding to the x-ray dose output. The detector and the regulating device are connected to an x-ray dose output regulator so as to provide automatic exposure such that the adjustable recording value is related to the output signal of the x-ray detector, whereby the x-ray dose output is adapted to a desired value resulting in an optimal exposure of the film. The regulating device for the nominal value for the output dose regulator is associated with a transmitter for transmitting an electrical signal related to the speed of transport of the film such that the nominal value is adjusted to be a function of the transport speed of the film.
摘要翻译： 一种用于x射线诊断的牙科设备包括一个单元，其包括X射线管和薄膜夹持器，并且适于围绕垂直轴线旋转，以及用于设置在x射线管和 电影载体。 该装置产生具有通过X射线管/胶片载体单元的计时机构预先确定的放射照相记录时间的通用断层图像，以及至少一个可由调节装置调节以提供标称或参考记录的另外的记录值 值。 该单元还包括设置在胶片载体上的X射线检测器，其中检测器在X射线记录的整个持续时间期间接收至少穿透患者的颌部的x射线辐射，在此期间 检测器提供对应于x射线剂量输出的电信号。 检测器和调节装置连接到X射线剂量输出调节器，以提供自动曝光，使得可调记录值与x射线检测器的输出信号相关，由此x射线剂量输出被适配 达到所需的值，导致膜的最佳曝光。 用于输出剂量调节器的额定值的调节装置与用于传输与胶片的传送速度相关的电信号的发射器相关联，使得标称值被调节为胶片的传送速度的函数。
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公开(公告)号：US4501010A
公开(公告)日：1985-02-19
申请号：US425445
申请日：1982-09-28
申请人： Ulrich Grassme
发明人： Ulrich Grassme
摘要： An exemplary embodiment comprises an exposure unit including an X-ray tube and a cassette holder rotatable about vertical axes and between which the head of the patient is disposed. A radiation detector is disposed at the cassette holder for supplying an electrical signal corresponding to the dose rate when it is struck by X-rays and being interconnected with an X-ray tube voltage controller and a dose rate regulator in such manner that the X-ray tube voltage is influenced by the output of the radiation detector to control the dose rate to a value producing an optimum film blackening. A function generator determining the speed of the exposure unit is provided in which a speed curve is stored given which the radiation dose influencing the film is approximately constant.
摘要翻译： 一个示例性实施例包括一个曝光单元，它包括一个X射线管和一个围绕垂直轴线旋转的盒座，并且病人的头部设置在其间。 放射线检测器设置在盒保持器处，用于当被X射线撞击时提供与剂量率相对应的电信号，并且以X射线管电压控制器和剂量调节器互相连接， 射线管电压受辐射检测器的输出影响，以将剂量率控制到产生最佳膜变黑的值。 提供了确定曝光单元的速度的函数发生器，其中存储速度曲线，其中影响胶片的辐射剂量近似恒定。
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公开(公告)号：US4155003A
公开(公告)日：1979-05-15
申请号：US855892
申请日：1977-11-30
申请人： Ulrich Grassme
发明人： Ulrich Grassme
CPC分类号： G05B19/124 , G04C23/38 , G05B19/108
摘要： In the illustrated embodiments, a rotary position encoder is manually positioned to select any of a set of x-ray exposure times to be used in making medical x-ray photographs. In one form, the encoder output selects a code word from a read only memory, and a comparator ends the timing cycle when a counter reaches a count value corresponding to the active code word. The pulse generator supplying input pulses to the counter, rather than operating at a constant rate, may be controlled so that the pulse count per unit time corresponds to a specified mAs-product, an x-ray tube being switched off when a selected count value (corresponding to a desired mAs-product) is reached.
摘要翻译： 在所示的实施例中，旋转位置编码器被手动地定位成选择用于制造医用x射线照片的一组x射线曝光时间中的任何一个。 在一种形式中，编码器输出从只读存储器中选择代码字，并且当计数器达到对应于有效代码字的计数值时，比较器结束定时周期。 可以控制向计数器提供输入脉冲而不是以恒定速率操作的脉冲发生器，使得每单位时间的脉冲数对应于指定的mAs乘积，当选择的计数值 （对应于期望的mAs产物）。
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公开(公告)号：US4013036A
公开(公告)日：1977-03-22
申请号：US631612
申请日：1975-11-13
申请人： Ulrich Grassme
发明人： Ulrich Grassme
摘要： A time switch device for X-ray diagnostic apparatus, in particular for the preparation of tooth or dental exposures, including a knob for the setting of the exposure periods and which has a time scale on a scale carrier associated therewith. The knob has associated therewith a symbol carrier which, in the displacement direction of the knob, is adjustable relative to the knob and to the time scale, on which there are drawn the symbols of the objects which are to be X-rayed at such a spacing relative to each other whereby, upon the setting of one symbol on the exposure period associated therewith, the other symbols are then located opposite to the exposure periods which are associated therewith.
摘要翻译： 一种用于X射线诊断装置的时间开关装置，特别是用于制备牙齿或牙齿暴露的时间开关装置，包括用于设定曝光时段的旋钮，并且在与其相关联的刻度尺上具有时间刻度。 旋钮具有与其相关联的符号载体，该符号载体在旋钮的位移方向上相对于旋钮和时间尺度是可调节的，在该刻度上绘制将被X射线照射的物体的符号 相对于彼此的间隔，由此，在与其相关联的曝光周期设置一个符号时，其它符号然后与与其相关联的曝光周期定位。
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公开(公告)号：US3976889A
公开(公告)日：1976-08-24
申请号：US500111
申请日：1974-08-23
申请人： Erich Noske , Ulrich Grassme
发明人： Erich Noske , Ulrich Grassme
CPC分类号： A61B6/032 , A61B6/14 , A61B6/4035 , G21K1/10
摘要： An X-ray diagnostic apparatus for X-ray exposures, having preset X-ray tube voltage and current values, and a preset exposure time and, more particularly, to an apparatus of this type which includes a plurality of filters in conformance with an exposure program for the X-radiation adapted to be selectively employed in coordination with a particular exposure object.
摘要翻译： 一种用于X射线曝光的X射线诊断装置，具有预设的X射线管电压和电流值，以及预设的曝光时间，更具体地，涉及一种包括符合曝光的多个滤光器的这种装置 适于与特定曝光对象配合选择性地使用的用于X辐射的程序。
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公开(公告)号：US4618974A
公开(公告)日：1986-10-21
申请号：US576583
申请日：1984-02-03
申请人： Ulrich Grassme , Erich Noske
发明人： Ulrich Grassme , Erich Noske
CPC分类号： A61B6/4476 , A61B6/14 , H05G1/36
摘要： The invention concerns a dental X-ray diagnostic unit for panoramic planigraphy, with a radiation source, an X-ray film cassette that is moved during the exposure in relation to the radiation source, with an adjusting mechanism to move the radiation source and the cassette around the object, and with a slit stop located in the radiation path between the radiation source and the cassette. For a given exposure process, the time sequence of the dosage from the radiation source can be predetermined by a control apparatus.
摘要翻译： 本发明涉及一种用于全景平扫的牙科X射线诊断单元，具有辐射源，在曝光期间相对于辐射源移动的X射线胶片盒，具有用于移动辐射源和盒子的调节机构 围绕物体，并且具有位于辐射源和盒之间的辐射路径中的狭缝停止。 对于给定的曝光过程，来自辐射源的剂量的时间顺序可以由控制装置预先确定。
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公开(公告)号：US4475224A
公开(公告)日：1984-10-02
申请号：US425316
申请日：1982-09-28
申请人： Ulrich Grassme
发明人： Ulrich Grassme
摘要： A dental x-ray diagnostic installation has an exposure unit consisting of an x-ray tube and a cassette holder for generating a dental x-ray exposure. The exposure unit is rotatable about a patient's head by a motor. A radiation detector is attached to the cassette holder which supplies an electrical signal corresponding to the radiation dose rate to a dose rate regulator which in turn operates a voltage control unit which sets the level of high voltage supplied to the x-ray tube such that the dose rate of the radiation emitted by the x-ray tube is maintained at a value for producing an optimum film exposure. A range adjustment for the x-ray tube voltage is externally selected and limits operation of the voltage control unit such that if the dose rate regulator supplies a signal to the voltage control unit requiring a voltage which exceeds the set limit, the voltage control unit is inhibited and instead the motor speed is adjusted to maintain the optimum exposure.
摘要翻译： 牙科X线诊断装置具有由X射线管和用于产生牙齿X射线曝光的盒座的组合的曝光单元。 曝光单元可通过电动机围绕患者的头部旋转。 放射线检测器附接到盒座，该盒保持器将对应于辐射剂量率的电信号提供给剂量率调节器，剂量率调节器进而操作电压控制单元，该电压控制单元设置供应给x射线管的高电压电平，使得 由X射线管发射的辐射的剂量率保持在用于产生最佳膜曝光的值。 外部选择X射线管电压的范围调整，并且限制电压控制单元的操作，使得如果剂量率调节器向需要超过设定极限的电压的电压控制单元提供信号，则电压控制单元 并且改变电动机速度以保持最佳曝光。
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公开(公告)号：US4100417A
公开(公告)日：1978-07-11
申请号：US765456
申请日：1977-02-03
申请人： Horst Goetzl , Ulrich Grassme , Johannes Seissl
发明人： Horst Goetzl , Ulrich Grassme , Johannes Seissl
摘要： An X-ray installation particularly adapted for dental diagnostic use wherein the radiating anode is disposed adjacent the remote end of a tube projecting from a cathode housing. The anode emitts radiation in substantially all directions and the tube has a length sufficient to be inserted into the patient's mouth. The tube containing the anode is equipped as desired with a radiation absorbing cap which in one instance limits radiation emission through a cap aperture for filming from within the patient's mouth and in a second instance comprises a slip-on cylindrical tube having a focusing opening at an axial end thereof for directing radiation to a specified area of the mouth from externally of the mouth.
摘要翻译： 特别适用于牙科诊断用途的X射线设备，其中所述辐射阳极设置在从阴极壳体突出的管的远端附近。 阳极在基本上所有方向发射辐射，并且管具有足以插入患者口中的长度。 含有阳极的管装配有放射线吸收帽，其在一个实例中通过帽孔限制辐射发射，用于从患者口中进行成膜，而在第二种情况下，包括一个滑动圆柱形管，其具有在 其轴向端部用于将辐射从嘴的外部引导到嘴的指定区域。
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