公开(公告)号：US4721915A

公开(公告)日：1988-01-26

申请号：US824464

申请日：1986-01-31

Applicant: Joachim Kestler

Inventor： Joachim Kestler

IPC: A61B5/055 ,  A61B10/00 ,  G01R33/20 ,  G01R33/32 ,  G01R33/34 ,  G01R33/422

CPC classification number: G01R33/34046 ,  G01R33/3628 ,  G01R33/422

Abstract: A high frequency antenna system for nuclear magnetic resonance tomography devices generates a substantially uniform magnetic high frequency field and receives high frequency signals, and includes two conductor members supplied with current of opposite polarity, the conductor members being of a selected length and extending along an imaginary cylinder parallel to the direction of the cylinder axis. Electrodes are provided at the end regions of the conductor members, the electrodes maintaining the electrical field generated at the ends of the current-supplied conductor members away from the examination chamber, and limiting the magnetic high-frequency field generated by the current-supplied conductor members substantially to the examination chamber between the electrodes.

Abstract translation: 用于核磁共振断层摄影装置的高频天线系统产生基本上均匀的磁高频场并接收高频信号，并且包括提供有相反极性的电流的两个导体构件，导体构件具有选定的长度并且沿虚拟 圆柱体平行于气缸轴线的方向。 电极设置在导体构件的端部区域处，电极保持在电流供应的导体构件的端部处产生的电场远离检查室，并且限制由电流供应导体产生的磁高频场 构件基本上到电极之间的检查室。

公开(公告)号：US4962513A

公开(公告)日：1990-10-09

申请号：US430369

申请日：1989-11-02

Applicant: Guenter Schwierz ,  Joachim Kestler

Inventor： Guenter Schwierz ,  Joachim Kestler

IPC: A61B6/03 ,  H05G1/26 ,  H05G1/52

CPC classification number: A61B6/032 ,  A61B6/4028 ,  H05G1/26 ,  H05G1/52

Abstract: A computer tomography apparatus has a circular anode and a circular radiation detector in which a patient to be examined is disposed. An electron beam from an electron gun is deflected by a beam deflection system, fed by a line voltage, so that the focus of the electron beam on the anode orbits the patient, thereby irradiating the patient from different angular positions. The radiation attenuated by the patient is recorded by the radiation detector, and corresponding electrical signals are read-out from the radiation detector by a data acquisition system, from which an image of the patient is constructed. To avoid image artifacts due to fluctuations such as ripples in the line voltage which supplies the tomography apparatus, the beam deflection system and the data acquisition system are synchronized so that, at each of n revolutions of the focus, the focus movement and the read-out of the measured values ensue slightly phase-shifted compared to the preceding revolution relative to the ripple period of the line voltage.

Abstract translation: 计算机断层摄影装置具有圆形阳极和圆形放射线检测器，其中设置待检查的患者。 来自电子枪的电子束被通过线路电压馈送的光束偏转系统偏转，使得阳极上的电子束的焦点绕着患者，从而从不同的角度位置照射患者。 由患者衰减的辐射由辐射检测器记录，并且通过数据采集系统从辐射检测器读出对应的电信号，构建患者的图像。 为了避免由于诸如提供断层摄影装置的线电压中的波纹的波动引起的图像伪影，光束偏转系统和数据采集系统被同步，使得在焦点的n转，焦点移动和读取 - 与先前相对于线电压的纹波周期的转数相比，出现的测量值略微相移。

公开(公告)号：US4644282A

公开(公告)日：1987-02-17

申请号：US613355

申请日：1984-05-23

Applicant: Joachim Kestler

Inventor： Joachim Kestler

IPC: A61B10/00 ,  A61B5/055 ,  G01R33/20 ,  G01R33/38 ,  G01R33/385 ,  H03K3/53

CPC classification number: G01R33/3852

Abstract: Magnetic fields are applied to the examination subject, and the deflection of the atomic nuclei of the examination subject from their state of equilibrium by means of a high frequency magnetic excitation pulse is detected. There is at least one gradient coil for the purpose of generating a linear magnetic field gradient. The gradient coil is connected, in series with an additional inductance, to a current source. Connected in series with the gradient coil is a first switch. Connected in parallel with the series of connection of gradient coil and first switch is a second switch actuatable to open condition approximately simultaneously with the closure of the first switch.

Abstract translation: 将磁场施加到检查对象，并且检测受试者的原子核从其平衡状态借助于高频磁激励脉冲的偏转。 为了产生线性磁场梯度，存在至少一个梯度线圈。 梯度线圈与附加电感串联连接到电流源。 与梯度线圈串联连接是第一个开关。 与梯度线圈和第一开关的一系列连接并联连接的是第二开关，其可致动以在第一开关闭合时大致同时打开状态。

公开(公告)号：US06677754B2

公开(公告)日：2004-01-13

申请号：US10072090

申请日：2002-02-08

Applicant: Joachim Kestler ,  Arne Reykowski ,  Jianmin Wang

Inventor： Joachim Kestler ,  Arne Reykowski ,  Jianmin Wang

IPC: G01V300

CPC classification number: G01R33/28

Abstract: A magnetic resonance apparatus has magnet systems which respectively generate a basic magnetic field, gradient magnetic fields and a high-frequency magnetic field. A start element is connected to an end element via a coaxial cable. The coaxial cable is divided into at least two cable sections that are coupled to one another via a transformer having transformer coils. The transformer coils are directly connected to inner conductors of the respective coaxial cable sections and are connected to outer conductors of the respective coaxial cable sections via tuning capacitors.

Abstract translation: 磁共振装置具有分别产生基本磁场，梯度磁场和高频磁场的磁体系统。 启动元件通过同轴电缆连接到端部元件。 同轴电缆被分成至少两个电缆部分，其经由具有变压器线圈的变压器彼此耦合。 变压器线圈直接连接到各个同轴电缆部分的内部导体，并通过调谐电容器连接到各个同轴电缆部分的外部导体。

公开(公告)号：US06285894B1

公开(公告)日：2001-09-04

申请号：US09381986

申请日：1999-09-27

Applicant: Arnulf Oppelt ,  Joachim Kestler

Inventor： Arnulf Oppelt ,  Joachim Kestler

IPC: A61B500

CPC classification number: A61B5/6843 ,  A61B5/14532 ,  A61B5/1455

Abstract: The body part under examination has its thickness modulated by mechanical influence with at least two pressure modulation frequencies. At least four measured signals that are dependent both on the influence of the light as well as on the mechanical thickness change are acquired by irradiating the body part with light.

Abstract translation: 正在检查的身体部位的厚度由至少两个压力调制频率的机械影响调制。 通过用光照射身体部位来获得依赖于光的影响以及机械厚度变化的至少四个测量信号。

公开(公告)号：US6148225A

公开(公告)日：2000-11-14

申请号：US161134

申请日：1998-09-25

Applicant: Joachim Kestler ,  Ulrich Schaetzle ,  Erhard Schmidt

Inventor： Joachim Kestler ,  Ulrich Schaetzle ,  Erhard Schmidt

IPC: A61N7/00 ,  B06B1/02 ,  A61B5/055

CPC classification number: B06B1/0284 ,  A61N7/00

Abstract: In an ultrasound therapy apparatus and a method for the operation of an ultrasound therapy apparatus, a high-frequency generator generates electrical signals with different discrete frequency values that lie within a first frequency band in chronological succession. Whole multiples of the discrete frequency values do not lie in a second frequency band that corresponds to the reception band of a simultaneously operated diagnostic magnetic resonance apparatus.

Abstract translation: 在超声治疗装置和超声治疗装置的操作方法中，高频发生器按时间顺序生成位于第一频带内的不同离散频率值的电信号。 离散频率值的整数倍不在于对应于同时操作的诊断磁共振装置的接收频带的第二频带。