公开(公告)号：US20050033164A1

公开(公告)日：2005-02-10

申请号：US10483444

申请日：2002-07-12

申请人： Takeshi Yatsuo ,  Hisako Nagao ,  Kenji Sakakibara

发明人： Takeshi Yatsuo ,  Hisako Nagao ,  Kenji Sakakibara

IPC分类号： G01R33/34 ,  A61B5/055 ,  A61B19/00 ,  G01R33/32 ,  G01R33/36 ,  G06T1/00 ,  G06T5/00 ,  G06T7/00 ,  A61B6/00

CPC分类号： A61B34/20 ,  A61B5/06 ,  A61B90/361 ,  A61B2090/365 ,  A61B2090/374 ,  A61B2090/3954 ,  A61B2090/3958 ,  G01R33/286 ,  G06T5/006 ,  G06T7/73 ,  G06T2207/30004

摘要： An endoscope-like image taking method of the present invention includes a preparation step of providing at least one peculiar index, which can be discriminated from other portions on an MR image, at the tip of a catheter, a first step (S1) of previously inserting a metal guide wire for guiding the catheter into a body cavity of a patient into which the catheter is inserted, a second step (S2) of inserting the catheter into the body cavity along the guide wire, a third step (S3) of executing an MR imaging sequence of a plurality of sliced images intersecting the guide wire, a fourth step (S4) of reconstructing three-dimensional image data based upon the nuclear magnetic resonance signals, which are generated from the patient when the sequence is executed and are received by the guide wire, and determining the tip position and the inserting direction of the catheter by detecting the peculiar index provided at the tip of the catheter based upon the three-dimensional image data, and a fifth step (S5) of reconstructing the center projected image using the three-dimensional image data and setting the tip position and the inserting direction of the catheter as a view point and a line-of-sight direction and displaying the center projected image on a display means, thereby an endoscope-like image, which is observed from the catheter in the body cavity of the patient, is taken and displayed in real time or semi-real time so that the insertion of the catheter is supported.

摘要翻译： 本发明的内窥镜检查方法包括制备步骤，在导管的尖端处提供至少一种可以与MR图像上的其它部分区分开的特有指标，前者的第一步骤（S1） 插入用于将导管引导到其中插入导管的患者的体腔中的金属导丝;沿着导丝将导管插入体腔的第二步骤（S2）;执行第三步骤 与引导线相交的多个切片图像的MR成像序列;第四步骤（S4），用于根据核磁共振信号重构基于核心磁共振信号的三维图像数据，所述核磁共振信号在执行和接收时由患者生成 并且通过基于三维图像数据检测设置在导管的尖端处的特有指标来确定导管的尖端位置和插入方向，并且通过引导线 h步骤（S5），使用三维图像数据重建中心投影图像，并将导管的尖端位置和插入方向设置为视点和视线方向，并将中心投影图像显示在 从而从患者的体腔内的导管观察到的内窥镜状图像被实时或半实时地取出并显示，从而支撑导管的插入。

公开(公告)号：US07653426B2

公开(公告)日：2010-01-26

申请号：US10483444

申请日：2002-07-12

申请人： Takeshi Yatsuo ,  Hisako Nagao ,  Kenji Sakakibara

发明人： Takeshi Yatsuo ,  Hisako Nagao ,  Kenji Sakakibara

IPC分类号： A61B5/05

CPC分类号： A61B34/20 ,  A61B5/06 ,  A61B90/361 ,  A61B2090/365 ,  A61B2090/374 ,  A61B2090/3954 ,  A61B2090/3958 ,  G01R33/286 ,  G06T5/006 ,  G06T7/73 ,  G06T2207/30004

摘要： An endoscope-like image taking method includes providing at least one peculiar index, which can be discriminated from other portions on an MR image, at the tip of a catheter, previously inserting a metal guide wire for guiding the catheter into a body cavity of a patient inserting the catheter into the body cavity along the guide wire, executing an MR imaging sequence of a plurality of sliced images intersecting the guide wire, reconstructing three-dimensional image data based upon the nuclear magnetic resonance signals, which are received by the guide wire, and determining the tip position and the inserting direction of the catheter by detecting the peculiar index provided at the tip of the catheter based upon the three-dimensional image data, and reconstructing the center projected image using the three-dimensional image data and setting the tip position and the inserting direction of the catheter as a view point and a line-of-sight direction and displaying the center projected image on a display means.

摘要翻译： 一种内窥镜检查方法包括：在导管的尖端处提供至少一个可与MR图像上的其它部分区别的独特指标，预先插入用于将导管引导到体腔内的金属导丝 患者沿导丝将导管插入体腔，执行与引导线相交的多个切片图像的MR成像序列，根据由导丝接收的核磁共振信号重构三维图像数据 并且通过基于三维图像数据检测设置在导管的尖端处的特有指标来确定导管的尖端位置和插入方向，并且使用三维图像数据重建中心投影图像并将 尖端位置和导管的插入方向作为视点和视线方向，并显示中心投影图像 在显示装置上。

公开(公告)号：US20060220646A1

公开(公告)日：2006-10-05

申请号：US10554164

申请日：2004-04-22

申请人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

发明人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

IPC分类号： G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/3856

摘要： An MRI apparatus having a configuration that reduces vibration of a static magnetic field generating source is provided. A closed vessel 2 of the static magnetic field generating source is provided with a rigid structure 4 for preventing transmission of vibration generated from a gradient magnetic field generating part 21 to other members via the closed vessel 2. The rigid structure 4 uses, for example, a connecting part 4 that connects a face 25 on the imaging space side and a face 26 confronting it. The rigidity of the closed vessel is thereby increased, and therefore vibration transmitted from the gradient magnetic field generating part can be reduced. The connecting part can have a through-hole structure, and in such a case, internal space of through-hole can be used for drawing cables.

摘要翻译： 提供了具有减小静磁场产生源的振动的结构的MRI装置。 静态磁场产生源的密闭容器2具有刚性结构4，用于防止从梯形磁场产生部分21产生的振动经由密封容器2传递到其它部件。 刚性结构4使用例如连接成像空间侧的面25和面对面26的连接部4。 因此，密闭容器的刚性增加，因此可以减少从梯度磁场产生部件传递的振动。 连接部件可以具有通孔结构，在这种情况下，可以使用通孔的内部空间来拉制电缆。

公开(公告)号：US06937017B2

公开(公告)日：2005-08-30

申请号：US10468793

申请日：2002-02-27

申请人： Shigeru Kakugawa ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Kenji Sakakibara

发明人： Shigeru Kakugawa ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Kenji Sakakibara

IPC分类号： A61B5/055 ,  G01R33/383 ,  G01R33/387 ,  H01F6/00 ,  G01V3/00

CPC分类号： G01R33/383 ,  G01R33/387

摘要： The present invention is intended to provide a magnetic pole, a magnet apparatus, and a magnetic resonance imaging apparatus that the magnetic structure of the magnet apparatus for generating a uniform magnetic field is formed in a lower burst mode, and the profitability is increased, and at the same time, the uniformity of the magnetic field is improved.According to the present invention, the magnetic poles arranged opposite to each other across a measuring space have at least one of a plurality of hollows and a single hollow having a shape continuously changing on the section perpendicular to the direction of the magnetic field formed in the measuring space and particularly in order to make the magnetic field uniform, the arrangement of the plurality of hollows and the shape of the single hollow are adjusted. The magnet apparatus and magnetic resonance imaging apparatus of the present invention are structured as mentioned above.

摘要翻译： 本发明旨在提供一种用于产生均匀磁场的磁铁装置的磁性结构以较低的突发模式形成的磁极，磁体装置和磁共振成像装置，并且获利能力增加， 同时提高了磁场的均匀性。 根据本发明，跨越测量空间彼此相对设置的磁极具有多个中空部和单个中空中的至少一个，其形状在垂直于形成在该磁场的磁场的方向的截面上连续变化 测量空间，特别是为了使磁场均匀，调整多个中空部的布置和单个中空的形状。 本发明的磁铁装置和磁共振成像装置如上所述构成。

公开(公告)号：US07307421B2

公开(公告)日：2007-12-11

申请号：US10554164

申请日：2004-04-22

申请人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

发明人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

IPC分类号： G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/3856

摘要： An MRI apparatus having a configuration that reduces vibration of a static magnetic field generating source is provided. A closed vessel 2 of the static magnetic field generating source is provided with a rigid structure 4 for preventing transmission of vibration generated from a gradient magnetic field generating part 21 to other members via the closed vessel 2. The rigid structure 4 uses, for example, a connecting part 4 that connects a face 25 on the imaging space side and a face 26 confronting it. The rigidity of the closed vessel is thereby increased, and therefore vibration transmitted from the gradient magnetic field generating part can be reduced. The connecting part can have a through-hole structure, and in such a case, internal space of through-hole can be used for drawing cables.

摘要翻译： 提供了具有减小静磁场产生源的振动的结构的MRI装置。 静态磁场产生源的密闭容器2具有刚性结构4，用于防止从梯形磁场产生部分21产生的振动经由密封容器2传递到其它部件。 刚性结构4使用例如连接成像空间侧的面25和面对面26的连接部4。 因此，密闭容器的刚性增加，因此可以减少从梯度磁场产生部件传递的振动。 连接部件可以具有通孔结构，在这种情况下，可以使用通孔的内部空间来拉制电缆。

公开(公告)号：US06909348B2

公开(公告)日：2005-06-21

申请号：US10433428

申请日：2001-12-04

申请人： Shigeru Kakugawa ,  Katsunori Azuma ,  Tsuyoshi Wakuda ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Kenji Sakakibara ,  Takeshi Yatsuo ,  Takao Honmei

发明人： Shigeru Kakugawa ,  Katsunori Azuma ,  Tsuyoshi Wakuda ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Kenji Sakakibara ,  Takeshi Yatsuo ,  Takao Honmei

IPC分类号： G01R33/38 ,  G01R33/3815 ,  G01R33/421 ,  H01F7/00

CPC分类号： G01R33/421 ,  G01R33/3806 ,  G01R33/3815

摘要： A magnet device provided with a shield current carrying means in which two sets of magneto-static field generating sources for generating magnetic fields directed towards a first direction are disposed facing each other across a finite region and at least one set of the magneto-static field generating sources are disclosed on at least two almost concentric circles. A first plane includes a first axis, a second axis and a first point. The first point is a point of insertion between the first axis parallel to the first direction and passing almost through the center of the shield current carrying means. The second axis crosses at right angles to the first axis and is spaced almost equal distance from the two sets of the generating sources. The alternately arranged positive and negative current carrying directions of the shield current carrying means are set in the order of increasing value of θn.

摘要翻译： 一种具有屏蔽电流承载装置的磁体装置，其中用于产生朝向第一方向的磁场的两组磁静电场产生源跨越有限区域并且至少一组磁静态场 在至少两个几乎同心圆上公开发生源。 第一平面包括第一轴，第二轴和第一点。 第一点是在第一轴平行于第一方向并且几乎穿过屏蔽载流装置的中心之间的插入点。 第二轴线与第一轴线成直角交叉，与两组发电源的距离几乎相等。 屏蔽电流承载装置的交替布置的正和负电流承载方向被设置为以该数量增加的顺序。

公开(公告)号：US09075119B2

公开(公告)日：2015-07-07

申请号：US13391066

申请日：2010-08-26

申请人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

发明人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

IPC分类号： G01R33/385 ,  G01R33/421

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： In the magnetic resonance imaging device, the distance between the first and second coils is different in the circumferential direction and has a first region (A1) (θ=0, π) and a second region (A2) (θ=π/2) narrower than the first region (A1). In the first coil, wiring patterns (17a, 17b) on the side of a zero-plane (F0) passing through the center of the first coil and perpendicular to the axis direction (z-axis direction) meander in the circumferential direction such that the wiring patterns (17a, 17b) depart from the zero-plane (F0) in the first region (A1) and approach the zero-plane (F0) in the second region (A2). This provides a gradient magnetic field coil capable of configuring wiring patterns without using a loop coil that does not pass through the z-axis.

摘要翻译： 在磁共振成像装置中，第一和第二线圈之间的距离在圆周方向上不同，并且具有第一区域（A1）（＆eta; = 0，＆amp; pgr）和第二区域（A2）（＆Thetas; =＆pgr ; / 2）比第一区域（A1）窄。 在第一线圈中，通过第一线圈的中心并且垂直于轴线方向（z轴方向）的零平面（F0）侧的布线图案（17a，17b）在圆周方向上弯曲，使得 布线图案（17a，17b）从第一区域（A1）中的零平面（F0）偏离并接近第二区域（A2）中的零平面（F0）。 这提供了能够配置布线图案而不使用不通过z轴的环形线圈的梯度磁场线圈。

公开(公告)号：US20130184564A1

公开(公告)日：2013-07-18

申请号：US13811998

申请日：2011-07-14

申请人： Atsushi Ninomiya ,  Masaru Yokoyama ,  Kazuyuki Yanase ,  Manabu Yanagimoto ,  Takeshi Yatsuo ,  Hiroyuki Ohzeki

发明人： Atsushi Ninomiya ,  Masaru Yokoyama ,  Kazuyuki Yanase ,  Manabu Yanagimoto ,  Takeshi Yatsuo ,  Hiroyuki Ohzeki

IPC分类号： A61B5/055

CPC分类号： A61B5/0555 ,  G01R33/3806 ,  G01R33/381

摘要： The magnetic resonance imaging device of the present invention includes a gantry and a bed part comprising a top panel, the gantry comprises a circumferential panel covering outer circumference of a tunnel-shaped static magnetic field space, and a front panel having an opening serving as entrance of a bore for the static magnetic field space, this front panel comprises an arc-shaped outer panel extending from an upper part of the opening serving as entrance of the bore to the ground plane via both sides of the opening, and an inner panel disposed inside the outer panel, a portion connecting the outer panel and the inner panel constitutes a top surface protruding forwardly, and the inner panel is formed in a recessed shape with a concave curved surface extending from the top surface to the opening serving as entrance of the bore.

摘要翻译： 本发明的磁共振成像装置包括台架和包括顶板的床部件，所述台架包括覆盖隧道状静磁场空间的外周的圆周面板和具有作为入口的开口的前面板 的静止磁场空间的孔，该前面板包括弧形外板，其从用作孔的入口的开口的上部延伸通过开口的两侧到达接地面，并且内板被设置 在外板的内部，连接外板和内板的部分构成向前方突出的顶面，内板形成为从顶面延伸到开口的凹曲面，该凹曲面作为 孔。

公开(公告)号：US07852083B2

公开(公告)日：2010-12-14

申请号：US12296719

申请日：2007-04-10

申请人： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

发明人： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3856 ,  G01R33/3858 ,  G01R33/4215 ,  G01R33/422

摘要： An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1 at the center portion of the imaging space is larger than the diameter r2 of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.

摘要翻译： 提供了磁场产生效率优异的MRI装置。 根据本发明，梯度磁场线圈（13）的主线圈（52）部分地凹入，以减小射频线圈（11）和梯度磁场线圈（13）的总厚度。 也就是说，主线圈（52）被设计成管状，并且成像空间的中心部分处的直径r1大于主线圈端部的直径r2。 因此，RF线圈（11）可以靠近梯度磁场线圈（13）而不降低磁场产生效率。

公开(公告)号：US20140176138A1

公开(公告)日：2014-06-26

申请号：US14239872

申请日：2012-08-10

申请人： Yukinobu Imamura ,  Mitsushi Abe ,  Takeshi Yatsuo ,  Masanao Terada ,  Ryuya Ando ,  Takeshi Kawamura

发明人： Yukinobu Imamura ,  Mitsushi Abe ,  Takeshi Yatsuo ,  Masanao Terada ,  Ryuya Ando ,  Takeshi Kawamura

IPC分类号： G01R33/34

CPC分类号： G01R33/34092 ,  G01R33/34007 ,  G01R33/4215 ,  G01R33/56518 ,  Y10T29/49117

摘要： In a gradient magnetic field coil device including: a plurality of main coils generating in an imaging region of a magnetic field resonance imaging device a magnetic field distribution in which an intensity linearly inclines; and a plurality of shield coils, arranged on an opposite side of the imaging region across the main coils, suppressing residual magnetic field generated by the main coils on the opposite side. The plurality of main coils and the plurality of shield coils are connected in series. The device further includes a plurality of current adjusting devices, connected to the shield coils in parallel, independently adjusting currents flowing through the shield coils, respectively, to enhance symmetry of the residual magnetic field. The gradient magnetic field coil device is provided which can suppress generation of eddy current magnetic field even if there is a relative position deviation between the main coils and shield coils.

摘要翻译： 一种梯度磁场线圈装置，包括：多个主线圈，其在磁场共振成像装置的摄像区域中产生强度呈线性倾斜的磁场分布; 以及多个屏蔽线圈，其布置在主线圈上的成像区域的相对侧上，从而抑制由相反侧的主线圈产生的残余磁场。 多个主线圈和多个屏蔽线圈串联连接。 该装置还包括多个并联的屏蔽线圈的电流调节装置，分别独立地调节流过屏蔽线圈的电流，以增强残余磁场的对称性。 提供了梯度磁场线圈装置，即使在主线圈和屏蔽线圈之间存在相对位置偏差，也可以抑制涡电流磁场的产生。