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    • 1. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2013116381A
    • 2013-06-13
    • JP2013055519
    • 2013-03-18
    • Toshiba Corp株式会社東芝Toshiba Medical Systems Corp東芝メディカルシステムズ株式会社
    • OKAMOTO KAZUYAISHIHARA TAKAHIRO
    • A61B5/055
    • G01R33/3415G01R33/365
    • PROBLEM TO BE SOLVED: To increase a degree of freedom for setting a sensitivity region.SOLUTION: A magnetic resonance imaging apparatus includes: an array coil provided with a plurality of coil groups in each of which element coils for receiving magnetic resonance signals are arranged in a plurality of rows while being shifted from each other, and a validation unit for selectively validating the coil groups; a coil group selection unit for selecting one coil group of the coil groups on the basis of positional relationships between an imaging region and the coil groups; a control unit for controlling the validation unit such that the coil group selected by the coil group selection unit is validated; and a reconstruction unit for reconstructing an image of a subject on the basis of signals output by at least one element coil in response to magnetic resonance signals emitted from the subject, the at least one element coil being included among the element coils of the coil groups validated by the validation unit.
    • 要解决的问题:增加设置灵敏度区域的自由度。 解决方案:磁共振成像装置包括:具有多个线圈组的阵列线圈,每个线圈组中的每一个用于接收磁共振信号的元件线圈彼此偏移地排列成多行,并且验证 用于选择性地验证线圈组的单元; 线圈组选择单元,用于基于成像区域和线圈组之间的位置关系来选择线圈组的一个线圈组; 控制单元,用于控制验证单元,使得由线圈组选择单元选择的线圈组被验证; 以及重建单元,用于基于由至少一个元件线圈响应于从对象发射的磁共振信号输出的信号来重建对象的图像,所述至少一个元件线圈包括在线圈组的元件线圈之中 由验证单元验证。 版权所有(C)2013,JPO&INPIT
    • 2. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2011189079A
    • 2011-09-29
    • JP2010059803
    • 2010-03-16
    • Toshiba CorpToshiba Medical Systems Corp東芝メディカルシステムズ株式会社株式会社東芝
    • SEKIGUCHI TAKAKIMIAKITA KOJINAKANISHI TOSHIYUKIOKAMOTO KAZUYAKATO SOJURO
    • A61B5/055G01R33/36
    • G01R33/3692G01R33/3607
    • PROBLEM TO BE SOLVED: To enable image reconstruction with high accuracy based on echo signals without deterioration by reducing influence of interference by other radio waves to transmit clock signals with high accuracy.
      SOLUTION: A clock transmission circuit 113 and a transmission antenna 114 radio-transmit clock signals obtained by modulating carrier signals by clock signals. A reception antenna 90 and a clock reception circuit 91 reproduce clock signals based on the radio-transmitted clock signals. A carrier sense circuit 111 detects frequency of the radio wave being a potential interference wave for clock signals. A carrier wave control circuit 112 selects a frequency with comparatively low interference against the carried wave from a variable range of carrier wave signals and controls the clock transmission circuit 113 so as to use a carrier wave signal of the frequency.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:通过减少其他无线电波的干扰的影响,以高精度传输时钟信号,基于回波信号高精度地进行图像重建而不劣化。 解决方案:时钟发送电路113和发送天线114通过时钟信号调制载波信号而获得的无线电发送时钟信号。 接收天线90和时钟接收电路91基于无线电发送的时钟信号再现时钟信号。 载波检测电路111检测作为时钟信号的潜在干扰波的无线电波的频率。 载波控制电路112从载波信号的可变范围中选择对携带波的干扰比较低的频率,并且控制时钟发送电路113以便使用该频率的载波信号。 版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Magnetic resonance imaging apparatus and magnetic resonance imaging method
    • 磁共振成像装置和磁共振成像方法
    • JP2008296011A
    • 2008-12-11
    • JP2008117722
    • 2008-04-28
    • Toshiba CorpToshiba Medical Systems Corp東芝メディカルシステムズ株式会社株式会社東芝
    • OKAMOTO KAZUYA
    • A61B5/055G01R33/34
    • G01R33/34046G01R33/3415G01R33/3664G01R33/4833G01R33/4836G01R33/5612
    • PROBLEM TO BE SOLVED: To allow a plurality of radio frequency coils to be used for transmission and reception in common. SOLUTION: A transmission unit 3 respectively generates K (a natural number of 2 or higher) transmission radio-frequency pulse signals required to produce the radio-frequency magnetic field. A transmission switching unit which allocates K transmission radio-frequency pulse signals to K transmission signal paths among M (a natural number of 2 or higher and M≥K) transmission signal paths. A transmission/reception switching unit 6 can connect M radio frequency coils maximum and selectively connects M transmission signal paths and M reception signal paths to radio frequency coils. A reception allocation unit 9 selects N (a natural number of 2 or higher and N≤M and N>K) magnetic resonance signals among magnetic resonance signals respectively received by the radio frequency coils and transmitted via M reception signal paths. A reception unit 10 receives each of N magnetic resonance signals selected by the reception allocation unit 9. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:允许多个射频线圈共同地用于发送和接收。 解决方案:传输单元3分别产生产生射频磁场所需的K(自然数为2或更高)的传输射频脉冲信号。 M(自然数2以上,M≥K)个发送信号路径的K个发送信号路径分配K个发送高频脉冲信号的发送切换部。 发送/接收切换单元6可以将M个射频线圈最大连接,并且将M个发送信号路径和M个接收信号路径选择性地连接到射频线圈。 接收分配单元9选择分别由射频线圈接收并通过M个接收信号路径发送的磁共振信号中的N(自然数2以上,N≤M和N> K)的磁共振信号。 接收单元10接收由接收分配单元9选择的N个磁共振信号。版权所有:(C)2009,JPO&INPIT
    • 6. 发明专利
    • Ultrasonic therapy apparatus
    • JP2004321823A
    • 2004-11-18
    • JP2004203960
    • 2004-07-09
    • Toshiba Corp株式会社東芝
    • SUZUKI TAKUJIFUJIMOTO KATSUHIKOISHIBASHI YOSHIHARUSHIBATA MARIKOAIDA SATOSHIOKAMOTO KAZUYA
    • A61B19/00A61B18/00
    • PROBLEM TO BE SOLVED: To provide a safe and sure treatment apparatus which can prevent side effects by ultrasonic irradiation to unexpected region and produce enough heat denaturation in an object part to be treated. SOLUTION: The treatment apparatus provides an applicator 10 which focuses ultrasonic waves from an ultrasonic source 102 on the object part to be treated in a test body and irradiates it, an MRI device which obtains three dimensional image information in the test body, a means for dividing a three dimensional sector of the object part to be treated from the three dimensional image information into two or more sections of a given thickness, a means for dividing the section into two or more partial regions of a given size, and an irradiation control means for controling the irradiation of treatment ultrasonic waves from an irradiation means for the two or more partial regions in a predetermined order. And the irradiation control means controls to meet a condition that the ultrasonic waves is emitted in order from the partial region belonging to more distant section from the ultrasonic waves, a condition that a distance between the partial regions of a temporally consecutive or close object to be irradiated with ultrasonic is placed beyond a given distance, or a condition that a time interval between the partial regions of a spatially consecutive or close object to be irradiated with ultrasonic is left more than a predetermined time. COPYRIGHT: (C)2005,JPO&NCIPI
    • 8. 发明专利
    • Magnetic resonance imaging device and radio frequency coil device
    • 磁共振成像装置和无线电频率线圈装置
    • JP2014039795A
    • 2014-03-06
    • JP2013118827
    • 2013-06-05
    • Toshiba Corp株式会社東芝Toshiba Medical Systems Corp東芝メディカルシステムズ株式会社
    • OKAMOTO KAZUYATAKAMORI HIROMITSUHAMAMURA YOSHIAKI
    • A61B5/055
    • G01R33/3692G01R33/3415G01R33/3621
    • PROBLEM TO BE SOLVED: To provide a technique in MRI (Magnetic Resonance Imaging) that realizes excellent radio transmission of digitized nuclear magnetic resonance signals from an RF (radio frequency) coil device to an MRI device.SOLUTION: An MRI device 20 comprises a first radio communication unit 200, a second radio communication unit 300, and an image reconstitution unit 56. The first radio communication unit 200 acquires nuclear magnetic resonance signals detected by an RF coil device 100, and transmits the digitized nuclear magnetic resonance signals by radio via an induction field. The second radio communication unit 300 receives the nuclear magnetic resonance signals transmitted from the first radio communication unit 200 by radio via the induction field. The image reconstitution unit 56 reconstitutes image data of a test object on the basis of the nuclear magnetic resonance signals received by the second radio communication unit 300.
    • 要解决的问题:提供一种实现从RF(射频)线圈装置到MRI装置的数字化核磁共振信号的优良无线电传输的MRI(磁共振成像)技术。解决方案:MRI装置20包括第一 无线电通信单元200,第二无线电通信单元300和图像重构单元56.第一无线电通信单元200获取由RF线圈装置100检测的核磁共振信号,并通过无线电通过经由 感应场。 第二无线电通信单元300通过无线电通过感应场接收从第一无线电通信单元200发送的核磁共振信号。 图像重构单元56基于由第二无线电通信单元300接收的核磁共振信号重构测试对象的图像数据。
    • 9. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2014023961A
    • 2014-02-06
    • JP2013230274
    • 2013-11-06
    • Toshiba Corp株式会社東芝Toshiba Medical Systems Corp東芝メディカルシステムズ株式会社
    • ADACHI KOHEIHANAWA MASATOSHIOKAMOTO KAZUYA
    • A61B5/055
    • PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus that can reduce an influence of B1 inhomogeneity by performing universal B1 shimming irrespective of characteristics of each subject.SOLUTION: A magnetic resonance imaging apparatus comprises: a transmission/reception RF coil that transmits a high-frequency signal and receives an MR signal from a subject; storage means for storing at least one of an amplitude and a phase of the high-frequency signal for each imaging portion of the subject; input means for inputting imaging conditions including the imaging portion of the subject; and imaging means that reads at least one of the amplitude and the phase of the high-frequency signal corresponding to the imaging portion of the subject from the storage means and acquires image data by performing imaging with at least one of the amplitude and the phase as the imaging conditions.
    • 要解决的问题:提供一种磁共振成像装置,其可以通过执行通用的B1匀场来减少B1不均匀性的影响,而与每个被摄体的特征无关。解决方案:一种磁共振成像装置,包括:发送/接收RF线圈, 高频信号并从被摄体接收MR信号; 存储装置,用于存储对象的每个成像部分的高频信号的幅度和相位中的至少一个; 用于输入包括被摄体的成像部分的成像条件的输入装置; 以及成像装置,其从存储装置中读取与被摄体的成像部分相对应的高频信号的幅度和相位中的至少一个,并通过以幅度和相位中的至少一个进行成像来获取图像数据, 成像条件。