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1. 发明授权

US09274189B2 High-frequency coil unit and magnetic resonance imaging device 有权
标题翻译：高频线圈单元和磁共振成像装置
公开(公告)号：US09274189B2
公开(公告)日：2016-03-01
申请号：US13512090
申请日：2010-11-29
申请人： Yoshihisa Soutome , Hideta Habara , Yoshitaka Bito , Hiroyuki Takeuchi , Tetsuhiko Takahashi , Hisaaki Ochi
发明人： Yoshihisa Soutome , Hideta Habara , Yoshitaka Bito , Hiroyuki Takeuchi , Tetsuhiko Takahashi , Hisaaki Ochi
IPC分类号： G01R33/34 , G01R33/48 , G01R33/345 , G01R33/36
CPC分类号： G01R33/34046 , G01R33/34053 , G01R33/34076 , G01R33/3453 , G01R33/3657 , G01R33/3678
摘要： There is provided a technique for securing a large examination space in a tunnel type MRI device without inviting increase of manufacturing cost and without significantly reducing irradiation efficiency or uniformity of the irradiation intensity distribution in an imaging region. Between rungs of a partially cylindrical RF coil, which coil corresponds to a cylindrical RF coil of which part is removed, there are disposed half-loops generating magnetic fields, which are synthesized with magnetic fields generated by loops constituted by adjacent rungs of the partially cylindrical RF coil and rings connecting the rungs to generate a circularly polarized or elliptically polarized magnetic field. Further, high-frequency signals of the same reference frequency having a desired amplitude ratio and phase difference are supplied to the partially cylindrical RF coils and half-loops.
摘要翻译：提供了一种用于在隧道式MRI装置中确保大的检查空间的技术，而不会增加制造成本，并且不显着降低成像区域中的照射强度分布的照射效率或均匀性。在部分圆柱形RF线圈的两个梯级之间，该线圈对应于部分被去除的圆柱形RF线圈，设置有产生磁场的半环，该磁场由具有由部分圆柱形的相邻梯级构成的环产生的磁场合成 RF线圈和环连接梯级以产生圆偏振或椭圆偏振磁场。此外，具有期望幅度比和相位差的相同参考频率的高频信号被提供给部分圆柱形RF线圈和半环。

2. 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。

3. 发明授权

US08594767B2 Magnetic resonance imaging apparatus and magnetic resonance imaging method 有权
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US08594767B2
公开(公告)日：2013-11-26
申请号：US12523343
申请日：2008-02-01
申请人： Masahiro Takizawa , Tetsuhiko Takahashi
发明人： Masahiro Takizawa , Tetsuhiko Takahashi
IPC分类号： A61B5/05
CPC分类号： A61B5/055 , A61B5/7285 , G01R33/5616 , G01R33/56375 , G01R33/56383 , G01R33/5673
摘要： When multiple types of imaging are performed while moving a table on which a subject to be examined is placed, an imaging efficiency is improved and a high-quality image is obtained within a short time. Therefore, within a predetermined time interval such as an identical period of a periodic living body motion, a predetermined number of echo signals from each of the multiple types of imaging sequences are acquired and the table on which the subject to be examined is placed is moved. Along with the movement of the table, data items within the same range in the Ky-direction as to each of the imaging sequences are acquired, the moving speed of the table is controlled in such a manner that the acquired data items become continuous in the x-direction, and images are reconstructed based on the data items obtained respectively from the imaging sequences.
摘要翻译：当在移动要被检查对象的表格的同时执行多种类型的成像时，提高成像效率并且在短时间内获得高质量图像。因此，在诸如周期性生物体运动的相同周期的预定时间间隔内，获取来自多种类型的成像序列中的每一种的预定数量的回波信号，并且移动放置被检查对象的表。随着桌子的移动，获取与每个成像序列相同的Ky方向上的数据项，表格的移动速度被控制成使获取的数据项在 x方向，并且基于从成像序列分别获得的数据项重建图像。

4. 发明授权

US08483466B2 Magnetic resonance imaging apparatus and blood vessel image acquiring method 有权
标题翻译：磁共振成像装置和血管图像采集方法
公开(公告)号：US08483466B2
公开(公告)日：2013-07-09
申请号：US12991561
申请日：2009-05-18
申请人： Takayuki Abe , Tetsuhiko Takahashi
发明人： Takayuki Abe , Tetsuhiko Takahashi
IPC分类号： G06K9/00
CPC分类号： A61B5/055 , A61B5/02007 , A61B5/489 , G01R33/56316 , G01R33/5635 , G01R33/56518
摘要： Plural blood vessels different in blood flow velocity are depicted with high image quality in blood vessel imaging using PC-MRA method. For this purpose, the present invention performs a measurement of an echo signal based on application of a positive-polarity flow encode pulse and a measurement of an echo signal based on application of a negative-polarity flow encode pulse on an examinee with each of plural phase encodes while varying the flow encode, and a blood vessel image of the examinee is reconstructed by using the plural echo signals having different flow encode absolute values.
摘要翻译：使用PC-MRA方法在血管成像中描绘了血流速度不同的多个血管，具有高图像质量。为此，本发明基于正极极性流编码脉冲的应用和基于在受检者上施加负极性流编码脉冲的回波信号的测量来执行回波信号的测量，其中多个相位编码，同时改变流编码，并且通过使用具有不同流编码绝对值的多个回波信号来重建受检者的血管图像。

5. 发明申请

US20120141007A1 MAGNETIC RESONANCE IMAGING APPARATUS AND SYNCHRONOUS MEASUREMENT METHOD 有权
标题翻译：磁共振成像装置和同步测量方法
公开(公告)号：US20120141007A1
公开(公告)日：2012-06-07
申请号：US13389620
申请日：2010-08-02
申请人： Masahiro Takizawa , Tetsuhiko Takahashi , Tomohiro Goto , Takayuki Abe
发明人： Masahiro Takizawa , Tetsuhiko Takahashi , Tomohiro Goto , Takayuki Abe
IPC分类号： G06K9/00
CPC分类号： A61B5/055 , A61B5/0402 , A61B5/0816 , A61B5/7207 , A61B5/7285 , G01R33/482 , G01R33/4824 , G01R33/5617 , G01R33/5673
摘要： An image with a desired contrast is obtained while suppressing body motion artifacts caused by both random motion and periodic motion of an object. In order to do so, an imaging sequence using a non-Cartesian sampling method is executed so as to synchronize with a biological signal only at the start time and a repetition time (TR), which is an execution interval between shots within the imaging sequence, is maintained. In addition, a time difference between a delay time and a start time of each shot is calculated, and a shot with a predetermined time difference or more is executed again after the TR time.
摘要翻译：获得具有期望对比度的图像，同时抑制由对象的随机运动和周期性运动引起的身体运动伪影。为了这样做，执行使用非笛卡尔采样方法的成像序列，以便仅在开始时与生物信号同步，并且重复时间（TR）是成像序列内的拍摄之间的执行间隔，维持。此外，计算出每个镜头的延迟时间和开始时间之间的时间差，并且在TR时间之后再次执行具有预定时间差的镜头。

6. 发明申请

US20120068705A1 MEASUREMENT DEVICE AND MEASUREMENT METHOD 有权
标题翻译：测量装置和测量方法
公开(公告)号：US20120068705A1
公开(公告)日：2012-03-22
申请号：US13258743
申请日：2010-03-25
申请人： Hideo Utsumi , Kazuhiro Ichikawa , Tetsuhiko Takahashi
发明人： Hideo Utsumi , Kazuhiro Ichikawa , Tetsuhiko Takahashi
IPC分类号： G01R33/56
CPC分类号： G01R33/4808 , A61B5/055 , A61B5/0555 , G01R33/3806 , G01R33/445 , G01R33/56383 , G01R33/56509 , G01R33/60
摘要： A measuring instrument and a measurement method which measures, using magnetic resonance, images such as a functional image, a morphologic image of an object to be measured eliminate the influences of the moving speed of the object to be measured during moving, thereby obtaining a precise measured image. The instrument comprises: the first and second external magnetic field generation devices which generate magnetic fields for exciting the magnetic resonance of a mouse (M) as a living body to be measured; a turntable which rotates and moves the mouse (M) as an object to be measured, thereby moving the mouse (M) in the magnetic fields of the first and second external magnetic field generation devices; an OMRI measurement processing unit and an MRI measurement processing unit which obtain measured image signals within the mouse (M) by phase encoding while applying a gradient magnetic field in the moving direction (y) of the mouse (M) without stopping during the movement by the turntable; and a measured signal correction unit which corrects the measured image signal (S (k., ky)), thereby obtaining a corrected image signal (S′ (k., ky)) wherein influence of movement in y-direction is corrected.
摘要翻译：使用磁共振测量功能图像，待测量对象的形态图像的测量仪器和测量方法消除了移动期间被测量物体的移动速度的影响，从而获得精确的测量图像。仪器包括：第一和第二外部磁场产生装置，其产生用于激发作为要测量的活体的鼠标（M）的磁共振的磁场; 旋转并移动作为测量对象的鼠标（M）的转台，从而在第一和第二外部磁场产生装置的磁场中移动鼠标（M）; OMRI测量处理单元和MRI测量处理单元，其通过相位编码获得鼠标（M）内的测量图像信号，同时在移动期间不停止地在鼠标（M）的移动方向（y）上施加梯度磁场，转盘; 以及校正测量图像信号（S（k，ky））的测量信号校正单元，从而获得校正了在y方向上的移动影响的校正图像信号（S'（k，ky））。

7. 发明申请

US20100219828A1 MAGNETIC RESONANCE IMAGING APPARATUS 失效
标题翻译：磁共振成像装置
公开(公告)号：US20100219828A1
公开(公告)日：2010-09-02
申请号：US12159177
申请日：2006-12-26
申请人： Tetsuhiko Takahashi , Takayuki Abe , Hisako Nagao
发明人： Tetsuhiko Takahashi , Takayuki Abe , Hisako Nagao
IPC分类号： G01R33/48
CPC分类号： G01R33/56375 , A61B5/0555 , A61B5/7257 , G01R33/56383 , G01R33/5676
摘要： A magnetic resonance imaging apparatus comprises object placing means for placing an object in an imaging space, translating means for translating the object in a given direction by translating the object placing means in the given direction continuously or step-wise, magnetic field generating means for exciting the desired region of the object by generating a static magnetic field, a gradient magnetic field in the imaging space, and a high-frequency magnetic field in the imaging space, signal detecting means for detecting a magnetic resonance signal from the object, and control unit for controlling the translating means, magnetic field generating means and the signal detecting means, and translating the object continuously or stepwise to a predetermined position at a predetermined speed so as to capture a magnetic resonance image of the object.The magnetic resonance imaging apparatus further comprises translation error detecting means for detecting an error of the position or the set value of the speed, and correcting means for correcting the error detected by the positional error detecting means.
摘要翻译：磁共振成像装置包括用于将物体放置在成像空间中的物体放置装置，用于通过沿着给定方向连续或逐步平移物体放置装置在给定方向上平移物体的平移装置，用于激发通过产生静态磁场，成像空间中的梯度磁场和成像空间中的高频磁场来产生物体的期望区域，用于检测来自物体的磁共振信号的信号检测装置，以及控制单元用于控制平移装置，磁场产生装置和信号检测装置，并以预定速度将物体连续或逐步地转移到预定位置，以便捕获物体的磁共振图像。磁共振成像装置还包括用于检测位置误差或速度设定值的平移误差检测装置，以及用于校正由位置误差检测装置检测到的误差的校正装置。

8. 发明申请

US20100164495A1 MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD FOR CORRECTING ERROR DUE TO GRADIENT MAGNETIC FIELD 有权
标题翻译：用于校正梯度磁场的误差的磁共振成像装置和方法
公开(公告)号：US20100164495A1
公开(公告)日：2010-07-01
申请号：US12601378
申请日：2008-06-03
申请人： Masahiro Takizawa , Tetsuhiko Takahashi
发明人： Masahiro Takizawa , Tetsuhiko Takahashi
IPC分类号： G01R33/48 , G01R33/565
CPC分类号： G01R33/56518 , G01R33/482 , G01R33/4824 , G01R33/561
摘要： In a non-cartesian sampling method, in order to reduce an artifact on an image caused by an error of a gradient magnetic field, data for correcting the error caused by the gradient magnetic field are obtained when data used for image reconstruction are obtained, and the data used for the image reconstruction are corrected by using the obtained data for the correction. In order to obtain the data for correcting the error, a block having plural parallel echo signals is measured.
摘要翻译：在非笛卡尔采样方法中，为了减少由梯度磁场的误差引起的图像上的伪像，获得用于图像重建的数据获得用于校正由梯度磁场引起的误差的数据，以及通过使用获得的校正数据来校正用于图像重建的数据。为了获得用于校正误差的数据，测量具有多个并行回波信号的块。

9. 发明授权

US07635978B2 Nuclear magnetic resonance imaging apparatus and method 失效
标题翻译：核磁共振成像装置及方法
公开(公告)号：US07635978B2
公开(公告)日：2009-12-22
申请号：US11918082
申请日：2006-03-22
申请人： Tetsuhiko Takahashi , Yumiko Yatsui , Koji Kajiyama , Hideki Kumai
发明人： Tetsuhiko Takahashi , Yumiko Yatsui , Koji Kajiyama , Hideki Kumai
IPC分类号： G01V3/00
CPC分类号： G01R33/56375 , G01R33/56383
摘要： A control means controls an imaging means for taking an image of a test object by a magnetic resonance, the test object being placed in an imaging space, and a transfer means that moves the test object, and on the basis of a difference (moving distance) between a position of the transfer means at the time of receiving a command of pausing the imaging and a position of the transfer means at the time of resuming the imaging, the control means controls the position of the transfer means or the position for imaging at the time of resuming, in such a manner that missing of data 503 caused by the difference can be compensated. With this configuration, it is possible to provide an MRI apparatus that is provided with an imaging pause function, and even when the pause function is activated, there is data consistency between the data before the pausing and the data after the resuming, thereby obtaining a high quality image.
摘要翻译：控制装置控制用于通过磁共振，测试对象被放置在成像空间中的测试对象的图像和移动测试对象的传送装置，并且基于差异（移动距离）在接收到暂停成像的命令时的传送装置的位置与恢复成像时的传送装置的位置之间，控制装置控制传送装置的位置或成像的位置以这种方式恢复的时间，可以补偿由差异引起的数据503的丢失。通过该结构，能够提供具有成像暂停功能的MRI装置，即使暂停功能被激活，暂停前的数据与恢复后的数据之间存在数据一致性，从而获得高质量的图像。

10. 发明申请

US20090177078A1 MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD 有权
标题翻译：磁共振成像装置及方法
公开(公告)号：US20090177078A1
公开(公告)日：2009-07-09
申请号：US12278237
申请日：2007-02-01
申请人： Masahiro Takizawa , Tetsuhiko Takahashi
发明人： Masahiro Takizawa , Tetsuhiko Takahashi
IPC分类号： A61B5/055
CPC分类号： G01R33/56375 , A61B5/055 , A61B5/7207 , A61B5/7257 , G01R33/5615 , G01R33/5616 , G01R33/5617 , G01R33/56383
摘要： In the continuous moving table imaging, high-speed imaging such as the echo planar method is implemented without deteriorating image quality, realizing a high-speed table movement, namely, high-speed imaging.In the magnetic resonance imaging apparatus, an imaging control means for controlling a magnetic field generation means, a transfer means, and a signal processing means executes an imaging sequence for applying multiple readout gradient magnetic fields to measure multiple nuclear magnetic resonance signals, after one-time application of an exciting RF pulse, while moving the transfer means. On this occasion, a positional deviation of the readout gradient magnetic fields given to the multiple nuclear magnetic resonance signals, caused by the movement of the transfer means, is calculated in advance as correction data, so that the measured nuclear magnetic resonance signals are corrected by the correction data.
摘要翻译：在连续移动台成像中，采用回波平面方式的高速成像，而不会降低图像质量，实现高速表移动，即高速成像。在磁共振成像装置中，用于控制磁场产生装置，传送装置和信号处理装置的成像控制装置执行用于施加多个读出梯度磁场以测量多个核磁共振信号的成像序列，在移动传送装置的同时应用激发的RF脉冲。在这种情况下，预先计算由转印装置的移动引起的给予多个核磁共振信号的读出梯度磁场的位置偏差作为校正数据，以便测量的核磁共振信号由校正数据。

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