专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2008161404A Magnetic resonance inspection device 有权
标题翻译：磁共振检测装置
公开(公告)号：JP2008161404A
公开(公告)日：2008-07-17
申请号：JP2006353697
申请日：2006-12-28
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： NINOMIYA ATSUSHI , KASAI YOSHI , OCHI HISAAKI , TSUCHIHATA MASAYOSHI , MIYAMOTO YOSHIYUKI , NAGAI SHIZUKA
IPC分类号： A61B5/055 , G01R33/34
CPC分类号： G01R33/3415 , A61B5/055 , G01R33/34007 , G01R33/34084
摘要： PROBLEM TO BE SOLVED: To suppress the increase of the number of channels and to provide a reception coil for vertical magnetic field type MRI usable in a wide area. SOLUTION: A reception coil unit 500 includes a bed coil unit 600 for matching the longitudinal direction with the body axial direction of an inspection object 103 and an upper coil unit 700 detachably attached to the bed coil unit 600. The bed coil unit 600 is provided with a plurality of lower sub coils disposed at the lower part of a mounting surface 601, and the upper coil unit 700 is provided with a plurality of upper sub coils connected with the lower sub coils. The upper sub coil is divided into a flexible inner side support 20-1 covering the mounting surface 601 and a flexible outer side support 20-2 covering the outer side of the inner side support 20-1 and disposed. The upper sub coils and the lower sub coils are connected by attaching the upper coil unit 700 to the bed coil unit 600 to form two or more kinds of sub coils. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了抑制通道数的增加，并且提供可用于广域的垂直磁场型MRI的接收线圈。解决方案：接收线圈单元500包括用于使纵向方向与检查对象103的主体轴向匹配的床线圈单元600和可拆卸地附接到床线圈单元600的上线圈单元700.床线圈单元 600设置有设置在安装表面601的下部的多个下部子线圈，并且上部线圈单元700设置有与下部子线圈连接的多个上部子线圈。上副线圈分为覆盖安装面601的柔性内侧支撑20-1和覆盖内侧支撑件20-1的外侧的柔性外侧支撑20-2，并配置。上副线圈和下子线圈通过将上线圈单元700附接到床线圈单元600而连接，以形成两种或更多种子线圈。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2009045361A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2009045361A
公开(公告)日：2009-03-05
申请号：JP2007216331
申请日：2007-08-22
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： TSUCHIHATA MASAYOSHI , OCHI HISAAKI , NAGAI SHIZUKA , MIYAMOTO YOSHIYUKI , NINOMIYA ATSUSHI , KASAI YOSHI
IPC分类号： A61B5/055 , G01R33/34
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus having a receiving coil capable of imaging an optional cross section in a wide range such as a whole body at a high speed. SOLUTION: An inner coil unit 501, or a first coil layer, has a sensitivity distribution in the RL direction, is movable singularly, and is usable for a horizontal magnetic field type MRI apparatus and a vertical magnetic field type MRI apparatus. An inner coil unit 502 and an upper coil unit 503, or a second coil layer, and has a sensitivity distribution in the HF direction so that, when performing a parallel imaging executed by setting a phase encoding direction to the RL direction or the HF direction, this constitution can attain the high speed imaging by operating a corresponding coil layer on condition that the first coil layer and the second coil layer are formed and operated together. An external coil unit 504, or a third coil layer, has a sensitivity distribution in the AP direction. The first, second and third coil layers are combinedly operated to image the optional cross section in the wide range at the high speed. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种磁共振成像装置，其具有能够高速成像诸如全身的宽范围内的可选横截面的接收线圈。解决方案：内线圈单元501或第一线圈层在RL方向上具有灵敏度分布，可单独移动，并且可用于水平磁场型MRI设备和垂直磁场型MRI设备。内线圈单元502和上线圈单元503或第二线圈层，并且在HF方向上具有灵敏度分布，使得当通过将相位编码方向设置为RL方向或HF方向执行并行成像时这种结构可以在第一线圈层和第二线圈层一起形成和操作的条件下通过操作相应的线圈层而获得高速成像。外部线圈单元504或第三线圈层在AP方向上具有灵敏度分布。第一，第二和第三线圈层被组合地操作以在宽范围内以高速成像可选的横截面。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2006272004A High-frequency coil and magnetic resonance imaging apparatus using the same 审中-公开
标题翻译：高频线圈和磁共振成像装置使用它
公开(公告)号：JP2006272004A
公开(公告)日：2006-10-12
申请号：JP2006190509
申请日：2006-07-11
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： YASUGI YUKIHIRO , NAGAI SHIZUKA
IPC分类号： A61B5/055 , G01R33/34
摘要： PROBLEM TO BE SOLVED: To provide a plane high-frequency coil, suitable for an open type MRI apparatus, and having high irradiating/receiving efficiency and good irradiating/receiving uniformity.
SOLUTION: This high-frequency coil is a plane coil constructed so that a plurality of linear conductors 2 are radially connected to the inside of a ring-like conductor 1. A resonance capacity 3 inserted in the ring-like conductor 1 is adjusted to take wavelength matching in one wavelength of irradiation frequency. This plane coil generates a rotary magnetic field of a plane parallel to the coil surface when a high-frequency current is input, and an orthogonal coil can be obtained using one coil by inputting the current from two positions having 90-degree separation of the ring-like conductor 1. This type of plane coils are disposed opposite to each other on the upper and lower sides of an MRI apparatus to constitute an irradiation coil 10. Since the irradiation coil can be shaped like a plane not to obstruct opening of an imaging space, it is possible to provide the high-performance MRI apparatus, which can easily gain access to a subject and achieve wide-range clinical application.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供适合于开放式MRI装置的平面高频线圈，并且具有高的照射/接收效率和良好的照射/接收均匀性。解决方案：该高频线圈是构造成使得多个线性导体2径向连接到环状导体1的内部的平面线圈。插入环状导体1中的谐振电容3为调整为在一个波长的照射频率下进行波长匹配。当输入高频电流时，该平面线圈产生与线圈表面平行的平面的旋转磁场，并且可以使用一个线圈通过从具有90度的环分离的两个位置输入电流来获得正交线圈类型的导体1.这种类型的平面线圈在MRI装置的上侧和下侧彼此相对设置，以构成照射线圈10.由于照射线圈可以成形为不妨碍成像的打开的平面空间，可以提供可以容易地获得对象的访问并实现广泛的临床应用的高性能MRI设备。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2003000566A Receiving coil for magnetic resonance imaging system 有权
标题翻译：接收线圈用于磁共振成像系统
公开(公告)号：JP2003000566A
公开(公告)日：2003-01-07
申请号：JP2001186601
申请日：2001-06-20
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： SHIRAKAWA HIROSHI , NAGAI SHIZUKA
IPC分类号： G01R33/34 , A61B5/055 , A61B19/00
摘要： PROBLEM TO BE SOLVED: To provide a receiving coil, with which attachment thereof is easily performed, a transition from surgical operation to photographing or from photographing to surgical operation is smoothly performed and sensitivity is improved. SOLUTION: A base part 16 of a brain orientation fixer 8 is composed of aluminum and by connecting the terminal part of the base part 16 with an upper receiving coil 15 through a repeating connector 14, a loop-shaped receiving coil is formed. Thus, since it is enough only to attach the upper receiving coil 15, the receiving coil can be easily attached and since the base part 16 is to be used also as a receiving coil, the receiving coil can be made close to a reagent so that sensitivity can be improved.
摘要翻译：要解决的问题：为了提供容易进行附件的接收线圈，从外科手术到拍摄或从拍摄到外科手术的过渡是顺利的，并且提高了灵敏度。解决方案：脑取向定影器8的基部16由铝构成，并且通过重复连接器14将基部16的端子部分与上接收线圈15连接，形成环形接收线圈。因此，由于仅仅附接上接收线圈15就可以容易地安装接收线圈，并且由于基部16也用作接收线圈，所以可以使接收线圈靠近试剂，使得灵敏度可以提高。

5. 发明专利

JP2003000565A Head fixture 有权
标题翻译：头饰
公开(公告)号：JP2003000565A
公开(公告)日：2003-01-07
申请号：JP2001186600
申请日：2001-06-20
申请人： Hitachi Medical Corp , Mizuho Co Ltd , 株式会社日立メディコ , 瑞穂医科工業株式会社
发明人： SHIRAKAWA HIROSHI , NAGAI SHIZUKA , IWANO HIDEAKI
IPC分类号： G01R33/30 , A61B5/055 , A61B19/00 , G01R33/34
摘要： PROBLEM TO BE SOLVED: To provide a head fixture which enables an operator to smoothly shift from surgery to imaging and from the imaging to the surgery by easily mounting a signal reception coil. SOLUTION: A base section 16 of a brain stereotaxis apparatus 8 is composed of aluminum and the end of the base section 16 is connected to the upper signal reception coil 15 by means of a junction connector 14, by which the looped signal reception coil is formed. As a result, the signal reception coil can be constituted simply by mounting the upper signal reception coil 15 and therefore the operator is able to carry out the imaging from the surgery without moving a subject.
摘要翻译：要解决的问题：提供一种能够使操作者通过容易地安装信号接收线圈从手术到成像以及从成像到手术的顺利移动的头部固定装置。解决方案：脑立体定位装置8的基部16由铝构成，基部16的端部通过结连接器14连接到上信号接收线圈15，由此形成环形信号接收线圈。结果，可以通过安装上部信号接收线圈15简单地构成信号接收线圈，因此操作者能够在不移动被摄体的情况下从手术执行成像。

6. 发明专利

JP2005237692A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2005237692A
公开(公告)日：2005-09-08
申请号：JP2004052176
申请日：2004-02-26
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： NAGAI SHIZUKA , TANIGUCHI TAKESHI , INOUE KAZUAKI , SHIRAKAWA HIROSHI
IPC分类号： G01R33/34 , A61B5/055
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus capable of setting the sensitivity center of a receiving coil on a region concerned of a subject easily and also capable of photographing a plurality of regions concerned of the subject easily without using a plurality of receiving coils. SOLUTION: The receiving coil 14 is inserted into a groove formed on a top plate 21 and can move relatively with respect to the top plate 21. The top plate 21, the receiving coil 14 and the subject 7 are moved in the direction of the Y-axis and the receiving coil 14 is arranged on a region concerned of the subject. When the receiving coil 14 reaches the center of a magnetic field, a guide pin 23 is pushed up in the direction of a static magnetic field generator 4 by the force of a spring and is inserted into a hole 4h to fix the receiving coil 14 to the center 14 of the magnetic field. Because the receiving coil 14 is fixed and the position of the receiving coil does not change even when the top plate 21 and the subject 7 are moved afterward, the receiving coil 14 can be moved to an arbitrary position on the subject 7. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决问题：提供一种磁共振成像装置，其能够容易地将接收线圈的灵敏度中心设置在被摄体的相关区域上，并且还能够容易地拍摄对象的多个区域，而不使用多个接收线圈。解决方案：接收线圈14插入到形成在顶板21上的槽中，并且可相对于顶板21相对移动。顶板21，接收线圈14和被检体7沿着方向的Y轴和接收线圈14配置在被检体的有关区域。当接收线圈14到达磁场的中心时，引导销23被弹簧的力沿静磁场发生器4的方向向上推，插入孔4h中以将接收线圈14固定到磁场的中心14。由于接收线圈14是固定的，即使当顶板21和被摄体7之后移动时接收线圈的位置也不改变，接收线圈14可以移动到被检体7上的任意位置。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2010233618A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2010233618A
公开(公告)日：2010-10-21
申请号：JP2009082167
申请日：2009-03-30
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： NAGAI SHIZUKA , IIZUKA TOMOJI
IPC分类号： A61B5/055 , G01R33/30
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus for easily and precisely placing a receiving coil at a magnetic field central position.
SOLUTION: A bar-code 25 having information which indicates the kind of the receiving coil 14, a central position of the receiving coil 14, and a distance of the bar-code 25 is displayed to the receiving coil 14. The kind of the receiving coil 14 is read by a bar-code reader 23. A distance between the central position of the receiving coil 14 when the bar-code 25 is read and the magnetic field center is determined by a bar-code information determination part. In accordance with the kind of the read receiving coil 14, hardware is set and the central position of the receiving coil 14 is automatically moved to the magnetic field central position.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于容易且精确地将接收线圈放置在磁场中心位置的磁共振成像装置。
解决方案：具有指示接收线圈14的种类，接收线圈14的中心位置和条形码25的距离的信息的条形码25被显示到接收线圈14。由条形码阅读器23读取接收线圈14.当条形码25被读取时，接收线圈14的中心位置与磁场中心之间的距离由条形码信息确定部分确定。根据读取接收线圈14的种类，设置硬件，接收线圈14的中心位置自动移动到磁场中心位置。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2004081514A Magnetic resonance imaging apparatus 审中-公开
公开(公告)号：JP2004081514A
公开(公告)日：2004-03-18
申请号：JP2002246653
申请日：2002-08-27
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： NAGAI SHIZUKA , SUZUKI SHINICHIRO
IPC分类号： G01R33/3415 , A61B5/055 , G01R33/36
摘要： PROBLEM TO BE SOLVED: To realize a magnetic resonance imaging apparatus capable of suppressing the mutual interference of a plurality of receiving coils even if the distance between the coils or the shape of the coils are changed to obtain an image of good quality.
SOLUTION: The application of voltage across both terminals of a variable capacity diode VC is stopped. One of the receiving coils 14a and 14b is set to a non-resonance state and the other one of them is set to a resonance state. The receiving signal value of the coil 14b is measured to be stored in a memory means. A Bias 4 and a Bias 3 are set to an energized state and the coil 14a is set to the resonance state to obtain a magnetic resonance signal. The supply voltage values from a variable power supply voltage Bias 1 are made variable to change the capacity of the diode VC and the intensity of the magnetic risonance signal is measured to judge whether a signal becoming maximum is present. When the magnetic resonance signal becoming maximum is obtained, the supply voltage value from the variable power supply voltage Bias 1 at that time is set. In this voltage value state, the photographing of a specimen is started.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JPH07163543A HIGH-FREQUENCY SIGNAL RECEIVING COIL OF MAGNETIC RESONANCE IMAGING SYSTEM 失效
公开(公告)号：JPH07163543A
公开(公告)日：1995-06-27
申请号：JP34220293
申请日：1993-12-15
申请人： HITACHI MEDICAL CORP
发明人： NAGAI SHIZUKA
IPC分类号： G01R33/34 , A61B5/055
摘要： PURPOSE:To improve the S/N of the high-frequency signal receiving coil of a magnetic resonance imaging system by changing the diameter of a coil according to the size of the examinee. CONSTITUTION:The high-frequency signal receiving coil 14b which is disposed within the signal receiving system of the magnetic resonance imaging system and is arranged to enclose the circumference of the examinee with a conductive roops is formed by dividing its conductive loops 22 to an upper part 22a and a lower part 22b. The upper divided part 22a is made couplable to the lower divided part 22b by connectors 23a, 23b so that the diameter of the coil enclosing the circumference of the examinee is changed according to the size of the examinee. As a result, an optimum filling factor is obtd. by changing the diameter of the coil according to the size of the examinee, by which the S/N is improved, thus the image quality of tomographic images is improved.

10. 发明专利

JPH0549617A RECEPTION CIRCUIT FOR MRI DEVICE 失效
公开(公告)号：JPH0549617A
公开(公告)日：1993-03-02
申请号：JP23732791
申请日：1991-08-23
申请人： HITACHI MEDICAL CORP
发明人： NAGAI SHIZUKA
IPC分类号： A61B5/055 , G01R33/32 , G01R33/36
摘要： PURPOSE:To obtain a reception echo corresponding to an arbitrary combination by providing an attenuator, a phase shifter and a selector, and controlling the amplitude of the attenuator, the phase shifting value of the phase shifter, and the selection contents by the selector in accordance with a video part. CONSTITUTION:In the reception circuit, high frequency amplifiers 30, 31 and 32 amplify receiving echo signals from coils 5, 7A and 7B, and by attenuators 33, 34 and 35, the amplitude adjustment of its output is executed. Phase shifters 36, 37 align the phase of echo signals of the coils 7A, 7B with the phase of an echo signal of the coil 5. The attenuator 33 selects the outputs of the phase shifters 36, 37 in accordance with a necessary combination, and they are added by an adder 39. A CPU 40 latches the outputs of attribute devices 30, 31 and 32, and executes the amplitude determination of the attenuators 33, 34 and 35, the phase shifting value determination of the phase shifters 36, 37, and also, selective setting by the selector 38 in accordance with an instruction. Moreover, the output of the adder 39 is inputted to the CPU to be processed.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式