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1. 发明授权

US5348012A Magnetic resonance imaging apparatus and method for forming an image of an artery 失效
标题翻译：用于形成动脉图像的磁共振成像装置和方法
公开(公告)号：US5348012A
公开(公告)日：1994-09-20
申请号：US21516
申请日：1993-02-23
申请人： Fumitoshi Kojima
发明人： Fumitoshi Kojima
IPC分类号： A61B5/055 , G01R33/48 , G01R33/563
CPC分类号： G01R33/5635 , G01R33/56308
摘要： A gradient field is applied in a coronal scheme such that a slice region along the flowing direction of a blood vessel, i.e., along the body axis is set as an imaging area. Of regions adjacent to the imaging region in the body axis direction, a region including a blood vessel as a target of imaging (in this case, an artery) through which the blood flows toward the imaging region is not excited, but only the imaging region is selectively excited. Then, since a spin in the artery is supplied to the imaging region in a fresh state, the image of this spin is formed with a signal level higher than that of a stationary spin remaining in the imaging region. Since the presaturated blood in the artery in the imaging region is returned at its peripheral portion to flow through the vein, the spin in the vein is already saturated, its signal level is lower than that of the spin in the artery, and the image of this spin is not formed. As a result, the image of the state of the artery can be formed within a short period of time.
摘要翻译：将梯度场应用于冠状方案，使得沿着血管的流动方向（即沿着身体轴线）的切片区域被设置为成像区域。在体轴方向上与成像区域相邻的区域中，没有激励作为血液朝向摄像区域流动的成像（在这种情况下为动脉）的目标的血管的区域，仅仅是摄像区域被选择性激发。然后，由于动脉中的旋转以新鲜状态提供给成像区域，所以该旋转的图像形成为具有高于保留在成像区域中的静止旋转的信号水平的信号水平。由于成像区域的动脉中的预饱和血液在其周边部分返回，流过静脉，所以静脉中的旋转已经饱和，其信号水平低于动脉中的旋转的信号水平，这种旋转没有形成。结果，可以在短时间内形成动脉状态的图像。

2. 发明申请

US20100085053A1 MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT COIL COOLING CONTROL METHOD 有权
标题翻译：磁共振成像装置和等级线圈冷却控制方法
公开(公告)号：US20100085053A1
公开(公告)日：2010-04-08
申请号：US12567461
申请日：2009-09-25
申请人： Masateru IWASA , Kazuto NOGAMI , Tomoyuki YOSHIDA , Fumitoshi KOJIMA , Yoshitomo SAKAKURA , Kohei ADACHI
发明人： Masateru IWASA , Kazuto NOGAMI , Tomoyuki YOSHIDA , Fumitoshi KOJIMA , Yoshitomo SAKAKURA , Kohei ADACHI
IPC分类号： G01R33/44 , G01R33/48
CPC分类号： G01R33/3856 , G01R33/3804 , G01R33/3873
摘要： A feedforward control unit predicts the maximum value of the temperature of a gradient coil based on a power duty and a scan time of a pulse sequence, and a present temperature of the gradient coil. When the maximum value exceeds a predetermined upper limit, the feedforward control unit then instructs a temperature adjusting unit to start a water circulation in a chiller at the start of a prescan, and the temperature adjusting unit starts the water circulation based on the instruction.
摘要翻译：前馈控制单元基于脉冲序列的功率占空比和扫描时间以及梯度线圈的当前温度来预测梯度线圈的温度的最大值。当最大值超过预定上限时，前馈控制单元然后指示温度调节单元在预扫描开始时开始冷却器中的水循环，并且温度调节单元基于该指令开始水循环。

3. 发明授权

US5356964A Stabilized polyolefin composition 失效
标题翻译：稳定的聚烯烃组合物
公开(公告)号：US5356964A
公开(公告)日：1994-10-18
申请号：US988696
申请日：1992-12-10
申请人： Tamaki Ishii , Shinichi Yachigo , Fumitoshi Kojima , Kanako Ida
发明人： Tamaki Ishii , Shinichi Yachigo , Fumitoshi Kojima , Kanako Ida
IPC分类号： C08K5/10 , C08K5/00 , C08K5/12 , C08K5/134 , C08K5/34 , C08K5/3435 , C08K5/52 , C08K5/524 , C08K5/53 , C08K5/5333 , C08L23/02 , D01F1/10 , D01F6/06 , C08K5/3492 , C08K5/11
CPC分类号： D01F6/06 , C08K5/005 , C08K5/134 , D01F1/10
摘要： A polyolefin composition comprising a polyolefin, and the following components:(A) a phenolic compound such as 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate;(B) an acrylate compound represented by the formula (I): ##STR1## wherein R.sup.1 is an alkyl of 1 to 5 carbon atoms, R.sup.2 is an alkyl of 1 to 8 carbon atoms, R.sup.3 is hydrogen or an alkyl of 1 to 8 carbon atoms, and R.sup.4 is hydrogen or methyl;(C) an organic phosphorous compound such as bis(2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite; and(D) a hindered piperidine compound such as poly[{6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazin-2,4-diyl}{(2,2,6,6-tetramethyl-4-piperidyl)imino}hexamethylene{(2,2,6,6-tetramethyl-4-piperidyl)imino}]. This composition is stable against thermal processing, thermal oxidation, light oxidation and discoloration, and it is especially useful for fibers and films.
摘要翻译：包含聚烯烃的聚烯烃组合物和以下组分：（A）酚化合物如1,3,5-三（3,5-二叔丁基-4-羟基苄基）异氰脲酸酯; （B）由式（I）表示的丙烯酸酯化合物：其中R 1是1至5个碳原子的烷基，R 2是1至8个碳原子的烷基，R 3是氢或 1至8个碳原子，R4为氢或甲基; （C）有机磷化合物如双（2,6-二叔丁基-4-甲基苯基）季戊四醇二亚磷酸酯; 和（D）受阻哌啶化合物如聚[{6-（1,1,3,3-四甲基丁基）亚氨基-1,3,5-三嗪-2,4-二基} {（2,2,6， 6-甲基-4-哌啶基）亚氨基}六亚甲基{（2,2,6,6-四甲基-4-哌啶基）亚氨基}〕。该组合物对于热加工，热氧化，光氧化和变色是稳定的，并且对纤维和薄膜特别有用。

4. 发明授权

US5338780A Polyolefin resin composition containing carbon black 失效
标题翻译：含有炭黑的聚烯烃树脂组合物
公开(公告)号：US5338780A
公开(公告)日：1994-08-16
申请号：US156903
申请日：1993-11-24
申请人： Fumitoshi Kojima , Tetsuo Yamaguchi
发明人： Fumitoshi Kojima , Tetsuo Yamaguchi
IPC分类号： C08K3/04 , C08K5/00 , C08K5/13 , C08K5/1575 , C08K5/34 , C08K5/3435 , C08K5/36 , C08L23/02 , C08K5/35
CPC分类号： C08K5/0008 , C08K3/04 , C08K5/1575
摘要： A polyolefin resin (A) containing carbon black is blended with the following components:(B) a phenolic compound represented by the following formula (I): ##STR1## wherein R.sup.1 is alkyl of 1 to 4 carbon atoms; (C) an organic sulfur compound selected from the compounds represented by the following formulas (II-1) and (II-2):(R.sup.2 --OCOCH.sub.2 CH.sub.2).sub.2 S (II-1)(R.sup.2 --SCH.sub.2 CHCOOCH.sub.2).sub.4 C (II-2) wherein R.sup.2 is alkyl of 4 to 20 carbon atoms;(D) a piperidine compound having at least one 2,2,6,6-tetramethylpiperidine ring in a molecule; and(E) an epoxy compound of bisphenol A type glycidyl ether. The composition thus blended exhibits excellent stability against thermal oxidation.
摘要翻译：将含有炭黑的聚烯烃树脂（A）与以下成分共混：（B）由下式（I）表示的酚类化合物：其中R 1为1〜4个碳原子的烷基; （II）与（II-2）表示的化合物的有机硫化合物：（R2-OCOCH2CH2）2S（Ⅱ-1）（R2-SCH2CHCOOCH2）4C（Ⅱ-2）其中R2是4〜20个碳原子的烷基; （D）分子中具有至少一个2,2,6,6-四甲基哌啶环的哌啶化合物; 和（E）双酚A型缩水甘油醚的环氧化合物。由此混合的组合物对热氧化显示出优异的稳定性。

5. 发明授权

US4644473A Correction circuit for a static magnetic field of an NMR apparatus and NMR apparatus for utilizing the same 失效
标题翻译：用于NMR装置的静磁场的校正电路和利用其的NMR装置
公开(公告)号：US4644473A
公开(公告)日：1987-02-17
申请号：US603726
申请日：1984-04-25
申请人： Fumitoshi Kojima , Masahiko Hatanaka
发明人： Fumitoshi Kojima , Masahiko Hatanaka
IPC分类号： A61B10/00 , A61B5/055 , G01R33/24 , G01R33/385 , G01R33/389 , G01R33/565 , G01N27/00 , G01R33/08
CPC分类号： G01R33/24 , G01R33/389 , G01R33/56563
摘要： In the NMR apparatus the resonant conditions may be kept constant by adjusting the strength of the static magnetic field. The echo signal that is induced under the specific conditions is processed so as to obtain the deviation of the resonant frequency in the correction circuit. The shift of the given static magnetic field is calculated based upon the deviation of the resonant frequency. The DC energizing current for the H.sub.O power supply is varied based upon the magnetic field shift so as to maintain the NMR phenomenon at the desirable resonant conditions.
摘要翻译：在NMR装置中，通过调整静磁场的强度，可以使谐振条件保持恒定。处理在特定条件下感应的回波信号，以获得校正电路中的谐振频率的偏差。基于谐振频率的偏差计算给定静态磁场的偏移。用于HO电源的DC通电电流基于磁场偏移而变化，以将NMR现象保持在期望的谐振条件。

6. 发明授权

US07148688B2 Magnetic resonance imaging apparatus and method of controlling magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置及磁共振成像装置的控制方法
公开(公告)号：US07148688B2
公开(公告)日：2006-12-12
申请号：US11081656
申请日：2005-03-17
申请人： Fumitoshi Kojima
发明人： Fumitoshi Kojima
IPC分类号： G01V3/00
CPC分类号： G01R33/4833
摘要： A magnetic resonance imaging apparatus includes a storage unit configured to store positional information about positional relationships between a first ROI and a reference image, and a ROI setting unit configured to set a second ROI to determine a position of a tomographic image based on the positional information.
摘要翻译：磁共振成像装置包括存储单元，其被配置为存储关于第一ROI和参考图像之间的位置关系的位置信息，以及ROI设置单元，被配置为基于位置信息来设置第二ROI以确定断层图像的位置。

7. 发明申请

US20050206379A1 Magnetic resonance imaging apparatus and method of controlling magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置及磁共振成像装置的控制方法
公开(公告)号：US20050206379A1
公开(公告)日：2005-09-22
申请号：US11081656
申请日：2005-03-17
申请人： Fumitoshi Kojima
发明人： Fumitoshi Kojima
IPC分类号： G01R33/32 , A61B5/055 , G01R33/54 , G01V3/00
CPC分类号： G01R33/4833
摘要： A magnetic resonance imaging apparatus includes a storage unit configured to store positional information about positional relationships between a first ROI and a reference image, and a ROI setting unit configured to set a second ROI to determine a position of a tomographic image based on the positional information.
摘要翻译：磁共振成像装置包括存储单元，其被配置为存储关于第一ROI和参考图像之间的位置关系的位置信息，以及ROI设置单元，被配置为基于位置信息来设置第二ROI以确定断层图像的位置。

8. 发明授权

US6043655A MR imaging utilizing the time of flight effect 失效
标题翻译： MR成像利用飞行时间效应
公开(公告)号：US6043655A
公开(公告)日：2000-03-28
申请号：US4862
申请日：1998-01-09
申请人： Junichi Makita , Fumitoshi Kojima
发明人： Junichi Makita , Fumitoshi Kojima
IPC分类号： G01R33/563 , G01V3/00
CPC分类号： G01R33/5635 , G01R33/56308 , G01R33/5607
摘要： Time-Of-Flight (TOF) MRI techniques are used to enhance blood flows into one of a pair of images for a given plane or slice of a patent's body. Arithmetic subtraction of such images produces a resultant image of substantially only blood flows since images of fat or other tissue are thus nulled out of the resultant image. All basic MRI sequences (e.g., FE, SE, etc.) can be used in conjunction with a pre-pulse on additional sub-sequences in a plane displaced from the objective plane to be imaged. Both arterial and venous blood flows can be imaged (separately or together in one resultant image). Color coding can be used in the resultant images to distinguish blood flow directions and/or velocities.
摘要翻译：飞行时间（TOF）MRI技术用于增强血液流入专利身体的给定平面或切片的一对图像之一。这样的图像的算术减法产生基本上只有血液流动的合成图像，因为脂肪或其他组织的图像因此被从所得到的图像中空出。所有基本的MRI序列（例如，FE，SE等）可以与从要成像的物镜平移的平面中的附加子序列上的预脉冲结合使用。动脉和静脉血流都可以成像（在一个合成图像中分开或一起）。可以在所得图像中使用颜色编码来区分血流方向和/或速度。

9. 发明授权

US5677626A System for magnetic resonance imaging 失效
标题翻译：磁共振成像系统
公开(公告)号：US5677626A
公开(公告)日：1997-10-14
申请号：US316896
申请日：1994-10-03
申请人： Mitsue Miyazaki , Fumitoshi Kojima
发明人： Mitsue Miyazaki , Fumitoshi Kojima
IPC分类号： G01R33/48 , G01R33/54 , G01V3/00
CPC分类号： G01R33/5605 , G01R33/4835 , G01R33/3875 , G01R33/543 , G01R33/5607
摘要： A system for magnetic resonance imaging is provided in which a prepulse is first applied to an object being examined placed in a static magnetic field for suppressing an MR signal from fat of the object. Then a pulse sequence including an RF pulse for multi-slice imaging of a plurality of slicing planes is applied to the object for acquiring image data. The system comprises an element for performing a shimming increasing uniformity of the static magnetic field, an element for detecting, every one of the slicing planes, an offset value offsetting a frequency shift of a spectrum distribution caused by turbulence in higher-order components of the static magnetic field, and an element for correcting, every one of the slicing planes, a frequency range of the prepulse in accordance with the offset value detected. The correcting element corrects a frequency of the RF pulse in compliance with the detected offset value.
摘要翻译：提供了一种用于磁共振成像的系统，其中首先将预脉冲施加到放置在静态磁场中的被检查物体，以抑制来自对象的脂肪的MR信号。然后，将包括用于多个切片平面的多切片成像的RF脉冲的脉冲序列应用于用于获取图像数据的对象。该系统包括用于执行增加静态磁场的均匀性的匀场的元件，用于检测每个切片平面中的每个切片平面的偏移值，该偏移值抵消由湍流引起的频谱分布的频移，静态磁场和用于根据检测到的偏移值来校正每个切片平面上的预脉冲的频率范围的元件。校正元件根据检测到的偏移值校正RF脉冲的频率。

10. 发明授权

US5557202A Method and system for magnetic resonance imaging 失效
标题翻译：磁共振成像方法与系统
公开(公告)号：US5557202A
公开(公告)日：1996-09-17
申请号：US233353
申请日：1994-04-26
申请人： Mitsue Miyazaki , Fumitoshi Kojima
发明人： Mitsue Miyazaki , Fumitoshi Kojima
IPC分类号： A61B5/055 , G01N24/08 , G01R33/46 , G01R33/48 , G01R33/483 , G01R33/54 , G01V3/00
CPC分类号： G01R33/5605 , G01R33/3875 , G01R33/4835 , G01R33/543 , G01R33/5607
摘要： A method of magnetic resonance imaging comprises, as one aspect, the steps of performing a first sequence including a step for applying a binomial pulse and performing a second sequence for collecting magnetic resonance (MR) image data. The binomial pulse application step, the central frequency of the binomial pulse is offset by a predetermined offset amount toward the high frequency side with respect to the resonance frequency of protons contained in water and the binomial pulse is applied.
摘要翻译：作为一个方面，磁共振成像的方法包括执行包括用于施加二项式脉冲并执行用于收集磁共振（MR）图像数据的第二序列的步骤的第一序列的步骤。二项式脉冲施加步骤中，二项式脉冲的中心频率相对于包含在水中的质子的共振频率向高频侧偏移预定偏移量，并施加二项式脉冲。

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