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111. 发明授权

US5218531A NMR spectroscopic analyzing method 失效
标题翻译： NMR光谱分析法
公开(公告)号：US5218531A
公开(公告)日：1993-06-08
申请号：US480946
申请日：1990-02-16
申请人： Kensuke Sekihara , Nagaaki Ohyama
发明人： Kensuke Sekihara , Nagaaki Ohyama
IPC分类号： G01R33/54 , A61B5/055 , G01R33/28 , G01R33/32 , G01R33/56
CPC分类号： G06Q10/04 , G01R33/56
摘要： In an NMR spectroscopic analyzing method to which the simulated annealing method is applied, each amplitude, decay constant, resonant frequency, and phase of each spectrum component of an FID signal formed by a plurality of spectrum components are used as variables. A perturbation of an estimated value of each variable and a decision of whether the perturbation is accepted or rejected are performed in sequence based on a certain probability depending on a variation amount of a cost function produced from the estimated value. The probability of accepting the perturbation is gradually decreased in the process of repeating the perturbations to obtain estimated values which minimize the cost function.
摘要翻译：在应用模拟退火方法的NMR光谱分析方法中，使用由多个光谱分量形成的FID信号的每个光谱分量的每个幅度，衰减常数，共振频率和相位作为变量。基于根据从估计值产生的成本函数的变化量的一定概率，依次执行每个变量的估计值的扰动和扰动是否被接受或拒绝的判定。在重复扰动的过程中接受扰动的概率逐渐降低，以获得最小化成本函数的估计值。

112. 发明授权

US5128615A Resonator for a magnetic resonance imaging apparatus 失效
标题翻译：用于磁共振成像装置的谐振器
公开(公告)号：US5128615A
公开(公告)日：1992-07-07
申请号：US623210
申请日：1990-12-06
申请人： Ralph Oppelt , Wilhelm Duerr , Horst Siebold
发明人： Ralph Oppelt , Wilhelm Duerr , Horst Siebold
IPC分类号： G01R33/32 , A61B5/055 , G01R33/34 , G01R33/341
CPC分类号： G01R33/3678 , G01R33/34 , G01R33/341
摘要： A resonator for use in a magnetic resonance imaging apparatus for transmitting and receiving high frequency signals is formed by a combination of two antenna sub-systems, which generate respective magnetic fields which are perpendicular to each other, with the currents in the sub-system being phase-shifted by 90.degree. relative to each other, and each sub-system includes a capacitance which defines the resonant frequency. Each of the sub-systems forms a current loop, the current loops containing a common current network and a common base plate, which serves as a return path for both current loops. The junctions of the current network are connected via the resonant capacitances to the base plate, which consists of electrically conductive material. A circularly polarizing resonator is achieved for the transversal, fundamental field of the imaging apparatus, with the resonator also being capable of use as a surface resonator if the spacing between the current network and the base plate is small.
摘要翻译：用于发送和接收高频信号的磁共振成像装置的谐振器由两个天线子系统的组合形成，两个天线子系统产生彼此垂直的各个磁场，子系统中的电流为相对于彼此相移90度，并且每个子系统包括限定谐振频率的电容。每个子系统形成电流回路，电流回路包含公共的当前网络和公共基板，其作为两个电流回路的返回路径。当前网络的接点通过谐振电容连接到由导电材料组成的基板。对于成像装置的横向基本场，实现圆偏振谐振器，如果当前网络和基板之间的间隔小，则谐振器也能够用作表面谐振器。

113. 发明授权

US5122749A Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US5122749A
公开(公告)日：1992-06-16
申请号：US555490
申请日：1990-07-30
申请人： Kazuya Hashino
发明人： Kazuya Hashino
IPC分类号： G01R33/32 , A61B5/055 , A61B10/00 , G01R33/3415 , G01R33/36 , G01R33/54
CPC分类号： G01R33/3621 , G01R33/3415
摘要： A magnetic resonance imaging apparatus having a reduced bulk of hardware for MR signal reception and requiring fewer computations for image reconstruction. The apparatus comprises a plurality of MR signal receiving RF coils, a plurality of signal composers, a plurality of receivers and an image reconstructing device. The RF coils correspond to an object body's sensitive areas which overlap with one another where their corresponding coils adjoin one another. Each of the signal composers addresses one group of RF coils whose sensitive areas do not overlap, the received signals of the coils being composed into one received signal. The receives perform signal processes such as detection and A/D conversion on the output signals from the signal composers. The image reconstruction device reconstructs images based on the outputs from the receivers and composes the reconstructed images into a single image.
摘要翻译： PCT No.PCT / JP89 / 00154 Sec。 371日期1990年7月30日 102（e）日期1990年7月30日PCT提交1989年2月15日PCT公布。出版物WO89 / 07416 日本1989年8月24日。一种磁共振成像装置，具有减少的用于MR信号接收的硬件体积，并且需要较少的图像重建计算。该装置包括接收RF线圈的多个MR信号，多个信号组合器，多个接收器和图像重建装置。 RF线圈对应于物体的彼此重叠的敏感区域，其中相应的线圈彼此相邻。每个信号编码器寻址敏感区域不重叠的一组RF线圈，线圈的接收信号组成一个接收信号。接收对来自信号编辑器的输出信号执行诸如检测和A / D转换的信号处理。图像重建装置基于来自接收器的输出重建图像，并将重建的图像组合成单个图像。

114. 发明授权

US5085219A Adjustable holders for magnetic reasonance imaging RF surface coil 失效
标题翻译：用于磁性原理成像的可调节夹具RF表面线圈
公开(公告)号：US5085219A
公开(公告)日：1992-02-04
申请号：US114343
申请日：1987-10-30
申请人： Douglas A. Ortendahl , Brenda G. Nichols , Ernesto Zepeda , Matthias Gyori , Louis T. Kircos
发明人： Douglas A. Ortendahl , Brenda G. Nichols , Ernesto Zepeda , Matthias Gyori , Louis T. Kircos
IPC分类号： G01R33/32 , A61B5/055 , G01R33/341
CPC分类号： G01R33/34007 , G01R33/341
摘要： An adjustable holder for a magnetic resonance imaging RF surface coil for imaging a part of the body such as the temporomandibular joint. Elements are provided for positioning and securing the RF surface coil at a first predetermined point along a longitudinal axis of the holder and for positioning and securing the RF surface coil at a second predetermined point transverse to the longitudinal axis and at a radial distance R from the longitudinal axis. The preferred embodiment provides orbital movement of the surface coil about the longitudinal axis using a pair of U-shaped runner guides disposed substantially transverse to the longitudinal axis and adjustable clamps in cooperative engagement with the runner guides. The surface coil may be adjusted along a path transverse to the longitudinal axis by way of an adjustable shaft or arm which can be moved inwardly and outwardly, and the surface coil can be pivoted in a step-wise manner using a pivot head having a plurality of equally spaced detents. The pivot head is biased in a direction away from the surface coil and adjustably engages one of the plural detents while rotating about an axis substantially parallel to the longitudinal axis.

115. 发明授权

US5084818A Method and system for Fourier transforming 3 dimensional MR data in predetermined position of interest by using phase-correction in MRI 失效
标题翻译：通过MRI中的相位校正对感兴趣的预定位置的三维MR数据进行傅里叶变换的方法和系统
公开(公告)号：US5084818A
公开(公告)日：1992-01-28
申请号：US361159
申请日：1989-06-05
申请人： Yoshio Machida
发明人： Yoshio Machida
IPC分类号： A61B5/055 , A61B10/00 , G01R33/32 , G01R33/54
CPC分类号： G01R33/4833 , G01R33/4822
摘要： In an MRI system, a region including a portion of interest is selectively excited in a predetermined pulse sequence to acquire 3 dimensional MR data. When the portion of interest is shifted from the center position of imaging, i.e., the center position of a gradient field, the 3 dimensional MR data is phase-corrected in accordance with the shift. The phase-corrected 3 dimensional MR data is 3-dimensional Fourier-transformed to obtain an MR image of a predetermined slice portion.
摘要翻译：在MRI系统中，包含感兴趣部分的区域被选择性地以预定脉冲序列激发，以获得三维MR数据。当感兴趣的部分从成像的中心位置（即梯度场的中心位置）移位时，根据该移位对3维MR数据进行相位校正。对相位校正后的3维MR数据进行3维傅里叶变换，得到预定切片部的MR图像。

116. 发明授权

US5072183A RF generator for magnetic resonance imaging apparatus 失效
标题翻译：射频发生器用于磁共振成像装置
公开(公告)号：US5072183A
公开(公告)日：1991-12-10
申请号：US590444
申请日：1990-09-26
申请人： Graeme McKinnon , Roland Proksa
发明人： Graeme McKinnon , Roland Proksa
IPC分类号： G01R33/32 , A61B5/055 , G01R33/36 , G01R33/46
CPC分类号： G01R33/3614
摘要： An rf generator for magnetic resonance imaging apparatus including a modulator in which a carrier is modulated with an envelope signal, and a transmitter stage which is connected subsequent to the modulator generator in which the implementation of the modulating signal enables the expenditure for the transmitter stage be substantially reduced in that the modulator comprises a first modulator section in which the envelope signal is converted into a series of equally long digital pulses whose density corresponds to the amplitude of the envelope signal, in that k different kinds of pulses are provided, in that during each pulse of a given kind the carrier is always switched on with a given phase position which deviates from the phase positions of the carrier which are associated with the pulses of the other kinds by 360.degree./k or an integer multiple thereof, and in that the resultant pulse-wise switched, preferably square-wave carrier acts as a switching signal for the transmitter stage.
摘要翻译：一种用于磁共振成像设备的射频发生器，包括其中载波被包络信号调制的调制器，以及发射机级，其在调制器发生器之后连接，其中调制信号的实现使得发射机级的支出能够实质上减少了，因为调制器包括第一调制器部分，其中包围信号被转换成一系列等长数字脉冲，其密度对应于包络信号的幅度，在k种不同种类的脉冲中，给定类型的每个脉冲总是以给定的相位位置开启，给定的相位位置偏离与其他类型的脉冲相关联的载波的相位位置360°/ k或其整数倍，并且合成的脉冲切换，优选方波载波用作发射机级的切换信号。

117. 发明授权

US5065760A Cable guide for a nuclear magnetic resonance tomography apparatus 失效
标题翻译：核磁共振断层摄影仪的电缆导轨
公开(公告)号：US5065760A
公开(公告)日：1991-11-19
申请号：US592293
申请日：1990-10-03
申请人： Norbert Krause , Wilhelm Hanke , Juergen Ruhl
发明人： Norbert Krause , Wilhelm Hanke , Juergen Ruhl
IPC分类号： A61B5/0428 , A61B5/055 , G01R33/28 , G01R33/32 , G01R33/422 , H02G3/04
CPC分类号： G01R33/422 , A61B5/04286 , A61B5/0555 , G01R33/28
摘要： A cable guide for use in a nuclear magnetic resonance tomography apparatus is provided for cable for making electrical connections between devices secured to a patient bed and devices disposed outside of the examination space. The cable guide is a grounded, electrical cable channel disposed beneath the patient bed and above the lower sub-antenna of a whole-body antenna and above at least one wall of the examination space. The cable channel has a V-shape, and is rounded at an edge facing the examination space, this edge projecting beyond the height of the lower sub-antenna. The cable guide substantially protects the cable against coupling with other components. The examination space remains free of built-in units.
摘要翻译：提供用于核磁共振断层摄影装置的电缆引导件，用于在固定到患者床的装置和设置在检查空间外的装置之间进行电连接的电缆。电缆引导件是设置在患者床下方并位于全身天线的下子天线之上并位于检查空间的至少一个墙壁上方的接地的电缆通道。电缆通道具有V形，并且在朝向检查空间的边缘处被圆化，该边缘突出超过下部子天线的高度。电缆引导件基本上保护电缆免受与其它部件的耦合。考试空间依然没有内置单位。

118. 发明授权

US5056146A Three-dimensional labeling apparatus for two-dimensional slice image information 失效
标题翻译：用于二维切片图像信息的三维贴标仪
公开(公告)号：US5056146A
公开(公告)日：1991-10-08
申请号：US250152
申请日：1988-09-28
申请人： Akihiko Nishide
发明人： Akihiko Nishide
IPC分类号： A61B10/00 , A61B5/055 , A61B6/03 , G01N23/04 , G01R33/32 , G06T5/00 , G06T7/00 , G06T7/60
CPC分类号： G06T7/0081 , G06T7/0097 , G06T2207/10072 , G06T2207/30004
摘要： Two-dimensional tomographic image data is binarized by a predetermined threshold value, and two-dimensional labeling numbers are sequentially given to areas formed by binarization. Data of adjacent tomographic images are bit-added to generate data of a double bit length. When a value of this doubled-bit data appears at a frequency over a predetermined value, it is determined that corresponding areas of the adjacent tomographic image data are connected three-dimensionally, and a three-dimensional labeling number is given.
摘要翻译：将二维断层图像数据二值化为预定的阈值，并且二维标注号被依次给予由二值化形成的区域。将相邻断层图像的数据进行位加法以生成双位长度的数据。当这个双位数据的值出现在超过预定值的频率时，确定相邻断层图像数据的相应区域是三维连接的，并且给出三维标记号。

119. 发明授权

US5051903A Method and apparatus for predicting values of a varying periodic phenomenon 失效
标题翻译：用于预测变化周期性现象的值的方法和装置
公开(公告)号：US5051903A
公开(公告)日：1991-09-24
申请号：US393376
申请日：1989-08-14
申请人： Norbert J. Pelc , Stephen W. Flax
发明人： Norbert J. Pelc , Stephen W. Flax
IPC分类号： G01R33/54 , A61B5/055 , G01R33/32 , G01R33/567 , G06F17/18
CPC分类号： G01R33/5673
摘要： An apparatus for reducing image artifacts in NMR imaging matches elements of a set to values of a substantially periodic function so that the values exhibit a predetermined relationship to the elements. The matching is performed by evaluating the relative probability of the values of the substantially periodic function from the samples in the growing database of the values and assigning the values to the elements by using the evaluated relative probability, so as to maximize the probability that subsequent valves may be assigned the remaining elements according the predetermined relationship. A method for correcting the matching of values with elements freezes the database and acquires additional values which are substituted for earlier matched values based on the frozen database.

120. 发明授权

US5023553A Method and apparatus for body motion corrective imaging 失效
标题翻译：身体运动矫正成像的方法和装置
公开(公告)号：US5023553A
公开(公告)日：1991-06-11
申请号：US330835
申请日：1989-03-30
申请人： Koichi Sano , Tetsuo Yokoyama , Hideaki Koizumi
发明人： Koichi Sano , Tetsuo Yokoyama , Hideaki Koizumi
IPC分类号： G01R33/54 , A61B5/055 , A61B10/00 , G01R33/28 , G01R33/32 , G01R33/567
CPC分类号： G01R33/5676
摘要： In order to eliminate the degradation of NMR image caused by a body motion due to breathing or the like, one of measured image signals is selected as a reference, correlation is calculated between each measured image signal and the reference, and the image signal is modified on the basis of the value of correlation.
摘要翻译：为了消除由于呼吸等引起的身体运动引起的NMR图像的劣化，选择测量图像信号之一作为参考，在每个测量的图像信号和参考之间计算相关性，并且图像信号被修改在相关性的基础上。

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