公开(公告)号：EP0209326A3

公开(公告)日：1987-05-27

申请号：EP86305320

申请日：1986-07-10

Applicant: Applied Power Inc.

Inventor： Clark, Ray ,  Schmer, Frank M., Jr.

IPC: A61B06/04 ,  A61B05/05 ,  A61B06/10

CPC classification number: A61B6/0457 ,  A61B5/0555 ,  A61B6/102

Abstract: The vehicle 1 is intended for positioning a patient within a nuclear magnetic resonance machine 2. A base 59 on wheels 9 supports a carriage 7 which can be raised by a hydraulic cylinder. The patient lies on a cradle 8 which slides longitudinally on the carriage 7. A housing 5 on the machine 2 encloses a hydraulic motor which is coupled to drive a hydraulic pump on the vehicle 1 when the latter is wheeled into position. Portion 5a of the housing 5 is tapered to guide the vehicle into the correct position and incorporates a latching mechanism. The hydraulic system on the vehicle has interlocks to ensure that the carriage can be lowered and the vehicle undocked only when the cradle has been retracted onto the carriage. Also the cradle is locked unless the carriage is at the correct height.

Abstract translation: 车辆1用于将患者定位在核磁共振机2内。轮9上的基座59支撑可由液压缸升高的滑架7。 该专利位于托架8上，托架8在滑架7上纵向滑动。机器2上的壳体5包围一液压马达，该液压马达在其运送到位时被联接以驱动车辆1上的液压泵。 壳体5的部分5a是锥形的，以将车辆引导到正确的位置并且包括闩锁机构。 ...车辆上的液压系统具有互锁，以确保滑架能够下降，并且车辆只有当托架已经缩回到滑架上时才脱离。 除非托架位于正确的高度，否则托架将被锁定。

公开(公告)号：EP0121367A3

公开(公告)日：1987-05-13

申请号：EP84301793

申请日：1984-03-16

Applicant: PICKER INTERNATIONAL LIMITED

Inventor： Young, Ian Robert

IPC: G01N24/08 ,  A61B05/05

CPC classification number: G01R33/3806 ,  A61B5/0555 ,  G01R33/34061 ,  G01R33/341 ,  G01R33/422 ,  G01R33/583

Abstract: A nuclear magnetic resonance imaging apparatus for medical use wherein a patientto be examined is positioned on support means (1) in a sitting posture and the required magnets (7, 11) and RF coils (13, 15) are arranged so as to allow easy movement of the patient into and out of the apparatus.

公开(公告)号：EP0156240A3

公开(公告)日：1986-10-08

申请号：EP85102819

申请日：1985-03-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Laskaris, Evangelos Trifon

IPC: F17C03/08 ,  F17C13/00 ,  A61B05/05 ,  G01N24/02

CPC classification number: F17C3/085 ,  F17C2203/0687 ,  F17C2221/017 ,  F17C2270/0536 ,  Y10S505/892

Abstract: An insert for a horizontal cryostat penetration comprises a plurality of foam plugs between which are disposed patches of copper or aluminum foil. The plugs and foil are disposed in a tubular conduit comprising thin wall, lowthermal conductivity material. This plug provides thermal insulation and significantly reduces the formation of convection currents in the penetration which would otherwise significantly increase the rate of coolant evaporation. The insert assembly described is designed to be ejected from the penetration upon the build up of excessive internal pressure. The insert is also preferably disposed within another tubular conduit around the exterior of which there is disposed one or more string-shaped helically disposed lengths of sealing material. Accordingly, when this assembly is inserted within a third conduit, a helical coolant vapor path is formed for exterior venting.

公开(公告)号：EP0108421A3

公开(公告)日：1985-07-31

申请号：EP83111154

申请日：1983-11-08

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Sugimoto, Hiroshi

IPC: G01N24/08 ,  A61B05/05

CPC classification number: G01R33/4835 ,  G01R33/385

Abstract: In an NMR diagnostic apparatus (100), a plurality of tomographic images in the diseased portion of the patient (P) are desirable to obtain diagnostic information thereof. To obtain a plurality of tomographic images, an auiliary coil (20) as a gradient field shifting coil is provided adjacent to the gradient field coils (19) in such a manner that combined magnetic field (G R ; G s ) generated by the auxilary coil (20) and the gradient field coils (19) serves to shift a magnetically-zero plane where the NMR phenomenon occurs under the influence of the static field (H o ) and the RF pulse (H 1 ).

Abstract translation: 在NMR诊断装置（100）中，患者（P）的患病部分中的多个断层图像被期望获得其诊断信息。 为了获得多个断层图像，作为梯度场移位线圈的辅助线圈（20）被设置为与梯度场线圈（19）相邻，使得辅助线圈（19）产生的组合磁场（GR; Gs） 20）和梯度场线圈（19）用于在静磁场（Ho）和RF脉冲（H1）的影响下移动发生NMR现象的磁零平面。

公开(公告)号：EP0115642A3

公开(公告)日：1985-06-26

申请号：EP83113230

申请日：1983-12-30

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION

Inventor： Moran, Paul R,

IPC: G01N24/08 ,  G01N24/10 ,  A61B05/05 ,  G01F01/62 ,  A61B05/02

CPC classification number: G01R33/56308 ,  A61B5/055 ,  A61B5/7257 ,  G01R33/56316

Abstract: An NMR zeugmatographic scanner is modified to produce flow images. A motion sensitizing gradient field is applied to the gyromagnetic nuclei after transverse excitation and prior to emission measurement. The motion sensitized free induction.decay signal which results is processed using an inverse Fourier transformation to produce a number of useful images.

公开(公告)号：EP0114349A3

公开(公告)日：1985-05-29

申请号：EP83112855

申请日：1983-12-20

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takase, Hidetomo

IPC: G01N24/08 ,  A61B05/05

CPC classification number: A61B5/055 ,  G01R33/3621 ,  G01R33/56

Abstract: In an NMR diagnostic apparatus, the NMR signal level is very weak, compared with the noise level. The NMR diagnostic apparatus (100) is comprised of an electromagnet for applying uniformly to the object (1) a static magnetic field (H o ), a signal transmitter/receiver coil (2) through which exciting pulses are applied so as to excite an imaginarily cross-sectionally sliced portion of the object (1), and NMR signals are received from the excited sliced portion thereof, a standard signal generator (4A) for generating a signal which is used on one hand as the exciting pulses and, on the other hand as a reference signal, two detectors (6A; 6B) which quadrature-detect the NMR signals derived from the transmitter/receiver coil (2) based upon the reference signal, an S/N ratio improvement circuit (11) which temporarily stores the detected NMR signals and improves an S/N ratio thereof is such a manner that at least two cos signal components, or two sin signal components of the quadrature-detected NMR signals which were taken during one examination period, and an image processing circuit (12) which processes the NMR signals derived from the S/N ratio improvement circuit (11) so as to obtain a tomographic image of the sliced portion of the object (1).

Abstract translation: 在NMR诊断装置中，与噪声水平相比，NMR信号水平非常弱。 核磁共振诊断装置（100）包括用于向对象（1）均匀地施加静态磁场（Ho）的电磁体，施加激励脉冲以便虚拟激励的信号发送器/接收器线圈（2） （1）的横截面切片部分，并且从激励切片部分接收NMR信号;标准信号发生器（4A），用于产生一方面用作激励脉冲的信号，另一方面用作激励脉冲 （2）的NMR信号进行正交检测的2个检测器（6A，6B），将所述基准信号作为参考信号的S / N比提高电路（11） 检测到的NMR信号并改善其S / N比，使得在一个检查周期内获得的至少两个cos信号分量或正交检测的NMR信号的两个正弦信号分量以及图像处理电路（12 ） 其处理从S / N比改善电路（11）导出的NMR信号，以获得对象（1）的切片部分的断层图像。

公开(公告)号：EP0082684A3

公开(公告)日：1983-07-27

申请号：EP82306734

申请日：1982-12-16

Applicant: Macovski, Albert

Inventor： Macovski, Albert

IPC: G01N24/08 ,  A61B05/05

CPC classification number: G01R33/5635 ,  G01R33/445 ,  G01R33/56308

Abstract: A two-dimensional projection image of the NMR activity within a volume is obtained. The signals due to static material are cancelled and do not appear in the projection image. The signals due to moving blood in vessels produce an isolated image of the vessels with the superimposed structure removed.

公开(公告)号：EP0042256A3

公开(公告)日：1982-07-14

申请号：EP81302590

申请日：1981-06-10

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Sugimoto, Hiroshi

IPC: G01N24/08 ,  A61B05/05

CPC classification number: G01R33/58 ,  G01R33/54

Abstract: Nuclear magnetic resonance apparatus in which information regarding the nuclear magnetic resonance distribution of a specified atomic nucleus in multiple directions in a body to be examined is obtained by producing a compound magnetic field by means of a combination of magnetic field devices, and then applying electromagnetic waves upon the body. The arrangement is such that the isomagnetic field surface of the gradient magnetic field can be rotated with respect to a coil wound around the body which is used for applying the electromagnetic waves. A receiver detects nuclear resonance as a result of impressing the magnetic fields and electromagnetic waves upon the body, and a coil holder made of a material containing none of the specified atomic nucleus is used both for holding the coil in a predetermined shape and for suitably spacing the coil from the body. A pair of standard signal sources made of a material containing the specified atomic nucleus are disposed in the coil holder to face each other through a body positioned in the coil so as to compensate the projection signal, and a drive device is used to rotate the coil holder with its signal sources and the coil as a unit in synchronism and cooperation with the electric rotations of the gradient magnetic field, the paired standard signal sources always being positioned in the isomagnetic field surfaces on both sides of the body whereby an image of the concentration distribution of the specified atomic nucleus in a specified plane of the body is obtained.

公开(公告)号：WO1998053737A1

公开(公告)日：1998-12-03

申请号：PCT/IL1997000174

申请日：1997-05-30

Applicant: N.I. MEDICAL LTD. ,  TSOGLIN, Alexander ,  FRINERMAN, Efim

Inventor： N.I. MEDICAL LTD.

IPC: A61B05/05

CPC classification number: A61B5/0535 ,  A61B5/0205

Abstract: A method and a system for non-invasively determining at least one main cardiorespiratory parameter of an individual, such as the Stroke Volume, at least one parameter characterizing balance of the extracellular fluid in the body (such as the Index Balance), and for diagnostics of blood circulatory problems and/or failures of cardiac functions. The method for determining the main cardiorespiratory parameter comprises the steps of attaching at least two electrodes to the individual's body in a manner enabling to obtain electrical bioimpedance measurements of the whole individual's body, passing an alternating current with a stable and constant amplitude through the electrodes, measuring the integral bioimpedance as the result of the current flow; simultaneously separating an active component from the integral bioimpedance; calculating the cardiorespiratory parameter of the individual from the obtained active component, using an empiric formula applicable to integral bioimpedance measurements. The calculation is based on obtaining a number of values of the parameter for a number of cardia cycles during a respiratory cycle, and computing an average of the cardiorespiratory parameter during a single respiratory cycle.

Abstract translation: 用于非侵入性地确定个体的至少一个主要心肺参数的方法和系统，例如中风体积，身体中细胞外液体（例如指数平衡）的至少一个参数表征平衡，以及用于诊断 的血液循环问题和/或心脏功能的失败。 用于确定主要心肺参数的方法包括以下步骤：以能够获得整个人身体的电生物阻抗测量的方式将至少两个电极附接到个体的身体，使具有稳定和恒定振幅的交流电通过电极， 测量作为电流流动的结果的积分生物阻抗; 同时将活性组分与积分生物阻抗分离; 使用适用于整体生物阻抗测量的经验公式从所获得的活性成分计算个体的心肺参数。 该计算基于在呼吸周期期间获得多个贲门周期的参数的值的数量，以及在单个呼吸周期期间计算心肺参数的平均值。

公开(公告)号：WO1997040743A1

公开(公告)日：1997-11-06

申请号：PCT/RU1996000281

申请日：1996-09-30

Applicant: NIKOLAEV, Dmitry Viktorovich ,  TUIKIN, Salavat Anasovich ,  BALUEV, Eduard Pavlovich

IPC: A61B05/05

CPC classification number: A61B5/4869 ,  A61B5/0537

Abstract: The present invention relates to a method for local measurement of bioimpedance which comprises feeding an AC probe current through adjacent extremities (3, 4, 10, 11) into the region (5) of the organism to be analysed. This method further includes measuring the AC voltage (U3) out of the region (5) to be analysed, said voltage being proportional to the electrical impedance (Z3, Z6, Z7, Z8) in the analysed region (5). This voltage is obtained from the difference between the overall voltage drop (U0) in the organism and the voltage drop (U1, U2) at each extremity (3, 4, 10, 11) where the current flows, said voltage drop (U1, U2) at each extremity (3, 4, 10, 11) being measured relative to the adjacent extremities (3, 4, 10, 11) where the current does not flow. This invention also relates to a device for implementing this method, and may be used in medicine for bioimpedance research, including the proportion of liquid in the organism and the calculation of certain hemodynamic parameters.

Abstract translation: 本发明涉及一种用于局部测量生物阻抗的方法，其包括将交流探针电流通过相邻末端（3,4,10,11）馈送到待分析生物体的区域（5）中。 该方法还包括测量要分析的区域（5）中的AC电压（U3），所述电压与分析区域（5）中的电阻抗（Z3，Z6，Z7，Z8）成比例。 该电压从生物体内的总电压降（U0）与电流流动的各个末端（3,4,10,11）处的电压降（U1，U2）之间的差获得，所述电压降（U1， U2）相对于电流不流动的相邻末端（3,4,10,11）被测量，每个末端（3,4,10,11）被测量。 本发明还涉及一种用于实施该方法的装置，并且可用于生物阻抗研究的药物，包括生物体中液体的比例和某些血液动力学参数的计算。