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41. 发明授权

US09182463B2 Magnetic resonance examination apparatus and antenna device 有权
标题翻译：磁共振检查仪和天线装置
公开(公告)号：US09182463B2
公开(公告)日：2015-11-10
申请号：US13577885
申请日：2011-01-21
申请人： Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Masayoshi Dohata , Tetsuhiko Takahashi , Hiroyuki Takeuchi
发明人： Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Masayoshi Dohata , Tetsuhiko Takahashi , Hiroyuki Takeuchi
IPC分类号： G01R33/34
CPC分类号： G01R33/34046
摘要： There is provided a technique for securing a comfortable examination space in a tunnel type MRI apparatus without increasing the manufacturing cost of the MRI apparatus and sacrificing performance thereof. In an RF coil provided with a hollow-shaped outer conductive element and a strip-shaped conductive element disposed along the outer conductive element in the axial direction, meander lines constituting the strip-shaped conductive element are disposed at uneven distances from the outer conductive element to secure an internal space. In order to obtain uniform sensitivity at the center of the RF coil, the strip-shaped conductive element is constituted with N of connected meander lines, and length of the strip-shaped conductive element is adjusted so that, in the strip-shaped conductive element resonating at resonance frequency of the antenna, nodes are formed in a number of (M+1)×N−1, wherein M is 0 or a natural number of 1 or larger.
摘要翻译：提供了一种用于在隧道式MRI装置中确保舒适检查空间而不增加MRI装置的制造成本并牺牲其性能的技术。在具有中空状的外部导电元件的RF线圈和沿着外部导电元件沿轴向设置的条状导电元件，构成条形导电元件的曲折线设置在与外部导电元件不均匀的距离处以确保内部空间。为了在RF线圈的中心获得均匀的灵敏度，带状导电元件由N个连接的曲折线构成，并且条形导电元件的长度被调节，使得在带状导电元件在天线的谐振频率下共振，以（M + 1）×N-1的数量形成节点，其中M为0或自然数为1或更大。

42. 发明授权

US08947084B2 Antenna device and magnetic resonance imaging device 有权
标题翻译：天线装置和磁共振成像装置
公开(公告)号：US08947084B2
公开(公告)日：2015-02-03
申请号：US13125829
申请日：2009-07-22
申请人： Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Yukio Kaneko , Masayoshi Dohata
发明人： Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Yukio Kaneko , Masayoshi Dohata
IPC分类号： G01R33/44 , H01Q9/04 , G01R33/34 , G01R33/341 , A61B5/055
CPC分类号： G01R33/34046 , A61B5/055 , G01R33/34007 , G01R33/34053 , G01R33/34061 , G01R33/341
摘要： Manufacture cost and maintenance cost of RF coils of MRI devices are reduced without any limitation concerning size of the coils. By constituting an antenna device for magnetic resonance imaging devices with a cylindrical outer conductor, a looped ribbon-shaped conductor disposed inside the cylindrical outer conductor along the cylindrical surface, and a feed point for transmission and/or reception between the cylindrical conductor and the ribbon-shaped conductor, and disposing the ribbon-shaped conductor so that length thereof can be readily adjusted, there is provided an antenna device for magnetic resonance imaging devices that generates a magnetic field component perpendicular to the central axis of the cylinder at a desired resonance frequency and shows sensitivity without using capacitors and without being imposed any limitation concerning size in the diametral direction of the cylinder.
摘要翻译：降低了MRI装置的RF线圈的制造成本和维护成本，而对于线圈的尺寸没有任何限制。通过构成用于具有圆柱形外部导体的磁共振成像装置的天线装置，沿着圆柱形表面设置在圆柱形外部导体内的环状带状导体，以及用于在圆柱形导体和带状物之间传输和/或接收的馈电点并且设置带状导体以使得其长度可以容易地调整，提供了一种用于磁共振成像装置的天线装置，其以期望的共振频率产生垂直于圆柱体的中心轴线的磁场分量并且在不使用电容器的情况下显示灵敏度，并且不对气缸的直径方向上的尺寸施加任何限制。

43. 发明申请

US20120306497A1 RF RECEPTION COIL AND MAGNETIC RESONANCE IMAGING APPARATUS USING SAME 有权
标题翻译： RF接收线圈和使用相同的磁共振成像装置
公开(公告)号：US20120306497A1
公开(公告)日：2012-12-06
申请号：US13577241
申请日：2011-01-26
申请人： Yukio Kaneko , Hideta Habara , Yoshihisa Soutome , Yosuke Otake , Hisaaki Ochi , Yoshitaka Bito
发明人： Yukio Kaneko , Hideta Habara , Yoshihisa Soutome , Yosuke Otake , Hisaaki Ochi , Yoshitaka Bito
IPC分类号： G01R33/34
CPC分类号： G01R33/5659 , G01R33/34076 , G01R33/3415 , G01R33/3657 , G01R33/3664 , G01R33/3678
摘要： There is provided a technique for improving quality of images obtained with an MRI apparatus by using the geometric structures of the conventional RF transmission coil and RF reception coil and without increasing burden on patients or MRI technicians. A conductor loop of an RF reception coil disposed between a subject and an RF transmission coil is used also as a loop for magnetic field adjustment in order to shield or enhance a rotating magnetic field B1 generated by the RF transmission coil. Further, the conductor loop operated as a conductor loop for magnetic field adjustment among the conductor loops constituting the RF reception coil is driven so that inhomogeneity of the rotating magnetic field B1 is reduced.
摘要翻译：提供了一种通过使用常规RF传输线圈和RF接收线圈的几何结构来提高使用MRI装置获得的图像质量并且不增加患者或MRI技术人员负担的技术。设置在被检体和RF传输线圈之间的RF接收线圈的导体环也用作用于磁场调整的环路，以便屏蔽或增强由RF传输线圈产生的旋转磁场B1。此外，作为构成RF接收线圈的导体环路之间用于磁场调整的导体回路的导体回路被驱动，使得旋转磁场B1的不均匀性降低。

44. 发明申请

US20110204890A1 ANTENNA DEVICE AND MAGNETIC RESONANCE IMAGING DEVICE 有权
标题翻译：天线装置和磁共振成像装置
公开(公告)号：US20110204890A1
公开(公告)日：2011-08-25
申请号：US13125829
申请日：2009-07-22
申请人： Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Yukio Kaneko , Masayoshi Dohata
发明人： Hideta Habara , Yoshitaka Bito , Hisaaki Ochi , Yoshihisa Soutome , Yukio Kaneko , Masayoshi Dohata
IPC分类号： G01R33/44 , H01Q9/04
CPC分类号： G01R33/34046 , A61B5/055 , G01R33/34007 , G01R33/34053 , G01R33/34061 , G01R33/341
摘要： Manufacture cost and maintenance cost of RF coils of MRI devices are reduced without any limitation concerning size of the coils. By constituting an antenna device for magnetic resonance imaging devices with a cylindrical outer conductor, a looped ribbon-shaped conductor disposed inside the cylindrical outer conductor along the cylindrical surface, and a feed point for transmission and/or reception between the cylindrical conductor and the ribbon-shaped conductor, and disposing the ribbon-shaped conductor so that length thereof can be readily adjusted, there is provided an antenna device for magnetic resonance imaging devices that generates a magnetic field component perpendicular to the central axis of the cylinder at a desired resonance frequency and shows sensitivity without using capacitors and without being imposed any limitation concerning size in the diametral direction of the cylinder.
摘要翻译：降低了MRI装置的RF线圈的制造成本和维护成本，而对于线圈的尺寸没有任何限制。通过构成用于具有圆柱形外部导体的磁共振成像装置的天线装置，沿着圆柱形表面设置在圆柱形外部导体内的环状带状导体，以及用于在圆柱形导体和带状物之间传输和/或接收的馈电点并且设置带状导体以使得其长度可以容易地调整，提供了一种用于磁共振成像装置的天线装置，其以期望的共振频率产生垂直于圆柱体的中心轴线的磁场分量并且在不使用电容器的情况下显示灵敏度，并且不对气缸的直径方向上的尺寸施加任何限制。

45. 发明申请

US20080315880A1 Coil apparatus and magnetic resonance imaging apparatus using the same 有权
标题翻译：线圈装置和使用其的磁共振成像装置
公开(公告)号：US20080315880A1
公开(公告)日：2008-12-25
申请号：US12071795
申请日：2008-02-26
申请人： Hideta Habara , Yoshitaka Bito , Yoshihisa Soutome , Hisaaki Ochi
发明人： Hideta Habara , Yoshitaka Bito , Yoshihisa Soutome , Hisaaki Ochi
IPC分类号： G01R33/341
CPC分类号： G01R33/34076 , G01R33/34007 , G01R33/3635
摘要： There is provided an RF coil capable of resonating or tuning two frequencies, having uniform spatial sensitivity and having a small spatially occupied volume, especially an RF coil suitable for a high magnetic field MRI apparatus. A coil apparatus is made up of a plurality of linear conductors 200, 201 arranged around a central axis and two ring conductors 202, 203 connected to the respective ends of the plurality of linear conductors 200, 201 and capacitors are inserted in the linear conductors 200, 201 and ring conductors 202, 203. The plurality of linear conductors are made up of conductors 200 located near the central axis and conductors 201 located far from the central axis and the ring conductors 202, 203 have star-like polygonal shape so that the linear conductors are arranged alternately. This structure can realize two tuning modes; a resonance mode similar to a birdcage type resonance mode and a resonance mode which becomes zero (node) in the vicinity of the linear conductor group 200 located near the central axis.
摘要翻译：提供了能够谐振或调谐两个频率的RF线圈，其具有均匀的空间灵敏度并且具有小的空间占用体积，特别是适用于高磁场MRI装置的RF线圈。线圈装置由围绕中心轴线布置的多个线性导体200,201和连接到多个线性导体200,201的各个端部的两个环形导体202,203组成，并且电容器插入线性导体200 ，201和环形导体202,203。多个线性导体由位于中心轴附近的导体200和位于远离中心轴线的导体201组成，并且环形导体202,203具有星形多边形形状，使得线性导体交替排列。该结构可实现两种调谐方式; 类似于鸟笼型共振模式的谐振模式和在位于中心轴附近的线性导体组200附近变为零（节点）的谐振模式。

46. 发明申请

US20070285096A1 Double-tuned RF coil 审中-公开
标题翻译：双重调谐RF线圈
公开(公告)号：US20070285096A1
公开(公告)日：2007-12-13
申请号：US11806820
申请日：2007-06-04
申请人： Yoshihisa Soutome , Hideta Habara , Hisaaki Ochi
发明人： Yoshihisa Soutome , Hideta Habara , Hisaaki Ochi
IPC分类号： G01V3/00
CPC分类号： G01R33/3635 , G01R33/34046 , G01R33/34069 , G01R33/34076 , G01R33/341 , G01R33/345 , G01R33/3453 , G01R33/3657 , G01R33/3678 , G01R33/3685
摘要： An RF coil has at least one conductor loop and a parallel circuit provided with a first branch and a second branch is installed. The first branch has a first capacitor and the second branch has a third capacitor and a first parallel resonance circuit configured by a second capacitor and a first inductor. The first capacitor has capacity to allow the RF coil to resonate at the time of transmission/reception of the first resonance frequency signal corresponding to an element with a higher magnetic resonance frequency, and capacity of the second capacitor and a value of the first inductor are determined as an accumulated value thereof based on the first resonance frequency. The third capacitor has capacity to allow the RF coil to resonate at the time of transmission/reception of the second resonance frequency signal corresponding to an element with a lower magnetic resonance frequency.
摘要翻译： RF线圈具有至少一个导体环路和安装有第一分支和第二分支的并联电路。第一分支具有第一电容器，第二分支具有由第二电容器和第一电感器构成的第三电容器和第一并联谐振电路。第一电容器具有允许RF线圈在与具有较高磁共振频率的元件相对应的第一谐振频率信号的发送/接收时谐振，并且第二电容器的容量和第一电感器的值为基于第一共振频率被确定为其累积值。第三电容器具有允许RF线圈在与具有较低磁共振频率的元件相对应的第二谐振频率信号的发送/接收时谐振的能力。

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