公开(公告)号：US4172978A

公开(公告)日：1979-10-30

申请号：US823709

申请日：1977-08-11

Applicant: Godfrey N. Hounsfield ,  Colin C. Oliver ,  Stephen R. Bates ,  Brian H. Lill

Inventor： Godfrey N. Hounsfield ,  Colin C. Oliver ,  Stephen R. Bates ,  Brian H. Lill

IPC: G01N23/04 ,  A61B6/03 ,  A61B6/08 ,  G06Q50/00 ,  G03B41/16

CPC classification number: A61B6/032 ,  A61B6/08 ,  A61B6/4028 ,  A61B6/4035 ,  Y10S378/901

Abstract: In a computerized tomographic apparatus, different detectors are caused to receive radiation along substantially the same beam path through the body in order to permit the evaluation of differences in performance of the detectors. This evaluation is average with other evaluations made in respect of the same detector for other beam paths so as to reduce the risk that erroneous performance differences may be evaluated in the event that any of the relevant beam paths lies adjacent a bone edge in a patient's body. Also disclosed are techniques for electronically deflecting the radiation so that part at least of the radiation is taken clear of the body and can be detected to provide reference signals.

Abstract translation: 在计算机断层摄影装置中，引起不同的检测器沿着通过身体的基本相同的光束路径接收辐射，以便允许评估检测器的性能差异。 对于其他光束路径的相同检测器进行的其他评估，该评估是平均的，以便降低在任何相关波束路径邻近患者体内的骨边缘的情况下可以评估错误的性能差异的风险 。 还公开了用于电子地偏转辐射的技术，使得至少部分的辐射被取出身体，并且可被检测以提供参考信号。

公开(公告)号：US4578801A

公开(公告)日：1986-03-25

申请号：US832378

申请日：1977-09-12

Applicant: Colin C. Oliver

Inventor： Colin C. Oliver

IPC: G01N23/04 ,  A61B6/03 ,  A61B6/06 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B6/06 ,  A61B6/4014

Abstract: A radiographic apparatus contains at least one source and at least one detector bank mounted on respective concentric annular rings; the patient's body being disposed inside the smaller ring. The rings are rotated in opposite directions and at such respective angular velocities that the effect of a lateral sweep of the detectors and source across the body is achieved with purely rotational movements. Advantageously, one ring carries two sources disposed diametrically opposite one another and the other ring carries three banks of detectors distributed equi-angularly therearound.

Abstract translation: 放射线照相设备包含至少一个源和至少一个安装在相应的同心圆环上的检测器组; 患者的身体位于较小的环之内。 环以相反的方向旋转并且以相应的角速度旋转，使得检测器和源穿过身体的横向扫掠的效果是用纯粹的旋转运动实现的。 有利地，一个环承载两个彼此径向相对设置的源，另一个环承载三个等离子角分布的检测器。

公开(公告)号：US4377867A

公开(公告)日：1983-03-22

申请号：US247058

申请日：1981-03-24

Applicant: Colin C. Oliver

Inventor： Colin C. Oliver

IPC: G01N23/04 ,  A61B6/03 ,  A61B6/06 ,  G03B41/16

CPC classification number: A61B6/032 ,  A61B6/06 ,  A61B6/4014

Abstract: A radiographic apparatus contains at least one source and at least one detector bank mounted on respective concentric annular rings; the patient's body being disposed inside the smaller ring. The rings are rotated in opposite directions and at such respective angular velocities that the effect of a lateral sweep of the detectors and source across the body is achieved with purely rotational movements. Advantageously, one ring carries two sources disposed diametrically opposite one another and the other ring carries three banks of detectors distributed equi-angularly therearound.

公开(公告)号：US4366395A

公开(公告)日：1982-12-28

申请号：US201527

申请日：1980-10-28

Applicant: Richard G. Gillard ,  Colin C. Oliver

Inventor： Richard G. Gillard ,  Colin C. Oliver

IPC: H05G1/50 ,  H03K17/12 ,  H03K17/28

CPC classification number: H05G1/50

Abstract: The output of the circuit is connected to the grid of an X-ray tube (X) by a long cable having a large capacitance (C.sub.c). A 25 kHz variable amplitude drive circuit (1) applies a continuous DC regulating voltage to a first rail (RL2) via a first transformer (T1), rectifier (D1, D2) and a filter (F1). A 25 kHz fixed amplitude drive circuit (2) periodically generates a blanking voltage which is applied to a second rail (RL3) via a second transformer (2), rectifier (D3, D4) and a Zener diode (Z1). The first rail (RL2) is coupled to the second rail (RL3) via a clamping diode (D.sub.c) which is reversed biased by the blanking voltage, so that the regulating voltage is overriden. In order to quickly discharge the large capacitance (C.sub.c) to achieve a rapid transition from blanking voltage to regulating voltage, a discharge path is connected across the output, the path including a transistor (T1). A control circuit (3) comprises a capacitor (C2) which stores an actuating voltage (V.sub.T) produced when the blanking voltage is produced. The circuit (3) also comprises an RC network (R1, C1), in parallel with the control circuit capacitor (C2), the RC junction being connected to the base of the transistor (T1) and to the second rail (RL3). When the blanking voltage is produced the RC junction is maintained at a high voltage and the transistor (T1) is non conductive. During the transition from blanking to regulating, the RC network defines a desired transition voltage which is applied by the transistor (T1) ro the second rail (RL3) and this controls the discharge of the cable capacitance.

Abstract translation: 电路的输出通过具有大电容（Cc）的长电缆连接到X射线管（X）的格栅。 25kHz可变幅驱动电路（1）通过第一变压器（T1），整流器（D1，D2）和滤波器（F1）向第一导轨（RL2）施加连续的直流调节电压。 25kHz固定振幅驱动电路（2）周期性地产生经由第二变压器（2），整流器（D3，D4）和齐纳二极管（Z1）施加到第二导轨（RL3）的消隐电压。 第一轨道（RL2）经由钳位二极管（Dc）耦合到第二轨道（D），钳位二极管（Dc）被消隐电压反向偏置，使得调节电压被覆盖。 为了快速放电大电容（Cc）以实现从消隐电压到调节电压的快速转变，放电路径跨输出连接，该路径包括晶体管（T1）。 控制电路（3）包括电容器（C2），其存储当产生消隐电压时产生的致动电压（VT）。 电路（3）还包括与控制电路电容器（C2）并联的RC网络（R1，C1），RC结连接到晶体管（T1）的基极和第二导轨（RL3）。 当产生消隐电压时，RC结被保持在高电压，并且晶体管（T1）是不导电的。 在从消隐到调节的过渡期间，RC网络定义了由第二导轨（RL3）上的晶体管（T1）施加的期望转换电压，并且这控制了电缆电容的放电。

公开(公告)号：US4123659A

公开(公告)日：1978-10-31

申请号：US799712

申请日：1977-05-23

Applicant: Colin C. Oliver

Inventor： Colin C. Oliver

IPC: H01J35/30 ,  A61B6/03 ,  G01N23/04 ,  G21K1/02 ,  H05G1/30

CPC classification number: A61B6/032 ,  A61B6/4028

Abstract: In a radiographic apparatus in which a scanning X-ray tube is used it is desirable to properly relate the scanning of the X-ray origin with other scanning motions of the apparatus. In this arrangement a scan progress detector is inserted partly into the radiation to detect its scan motion. In one eXample it is a collimator block to provide a sinusoidal output as the scan progresses. Pulses derived from the sinusoid are compared with signals representing an ideal scan and the differences between them used to correct the source scan control.

Abstract translation: 在使用扫描X射线管的放射线照相设备中，期望将X射线原点的扫描与设备的其它扫描运动正确地相关联。 在这种布置中，扫描进程检测器部分地插入到辐射中以检测其扫描运动。 在一个例子中，它是一个准直器块，用于在扫描进行时提供正弦输出。 将来自正弦波的脉冲与表示理想扫描的信号和用于校正源扫描控制的差异进行比较。

公开(公告)号：US4952905A

公开(公告)日：1990-08-28

申请号：US282974

申请日：1988-11-29

Applicant: Colin C. Oliver

Inventor： Colin C. Oliver

IPC: H04B3/54

CPC classification number: H04B3/542 ,  H04B2203/5416 ,  H04B2203/5441 ,  H04B2203/5458

Abstract: A communication system utilizing the electrical-supply wiring of mains circuit has an interface unit for an intruder-sensor. Unit has a transmitter for sending FSK-modulated messages and a capacitor to store adequate energy to power transmitter only for the time-duration of a message. The system also has a interface unit for a temperature sensor.

Abstract translation: 利用市电电路的电源线的通信系统具有用于入侵者传感器的接口单元。 单元具有用于发送FSK调制消息的发射器和用于在消息的持续时间内仅存储足够的能量来向发射机供电的电容器。 该系统还具有用于温度传感器的接口单元。

公开(公告)号：US4904090A

公开(公告)日：1990-02-27

申请号：US125991

申请日：1987-11-27

Applicant: Colin C. Oliver

Inventor： Colin C. Oliver

IPC: F25B21/04 ,  G01J5/06 ,  G05D23/27

CPC classification number: F25B21/04 ,  G01J5/061 ,  G05D23/27 ,  G01J2005/062 ,  G01J2005/067 ,  G01J2005/068

Abstract: A temperature sensor is incorporated within a housing having a silicon window through which infra-red radiation can enter. Mounted on a support structure is a semiconductor fabrication consisting of a reference junction and a sensing junction, covered with a black absorber. The reference junction is responsive to the temperature of the housing, whereas the sensing junction is responsive to the temperature of the housing and also the temperature of a remote zone from which infra-red radiation can enter the housing via the window. A Peltier heater/cooler controls the temperature of the housing, which temperature is monitored by a sensor to provide a measure of that of the remote zone.

Abstract translation: 温度传感器结合在具有硅窗口的壳体内，红外辐射可以通过该窗口进入。 安装在支撑结构上的是由参考接头和感测接头组成的半导体制造，覆盖有黑色吸收体。 参考接头响应于壳体的温度，而感测接点响应于壳体的温度以及远红外区域的温度，红外线辐射可以通过窗口进入壳体。 珀尔帖加热器/冷却器控制壳体的温度，该温度由传感器监测以提供远程区域的温度。

公开(公告)号：US4298799A

公开(公告)日：1981-11-03

申请号：US897789

申请日：1978-04-19

Applicant: Colin C. Oliver

Inventor： Colin C. Oliver

IPC: A61B6/03 ,  G03B41/16

CPC classification number: A61B6/4275 ,  A61B6/032

Abstract: In a computerized tomographic radiographic apparatus a source directs a fan distribution of radiation through a patient to be detected by a bank of detector devices. The detector devices are disposed on a circular path centered on an axis about which the source orbits. The detectors are fixed relative to the body so that the radiation is incident on different detectors as the source orbits. Each detector devices receives radiation in different orientations, in the fan distribution, at different times.