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1. 发明申请

US20110227571A1 MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：磁共振成像装置
公开(公告)号：US20110227571A1
公开(公告)日：2011-09-22
申请号：US13048314
申请日：2011-03-15
申请人： Takahiro Sekiguchi , Koji Akita , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
发明人： Takahiro Sekiguchi , Koji Akita , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/44
CPC分类号： G01R33/3692 , G01R33/3607
摘要： According to one embodiment, a apparatus includes a coil, a clock generator, an echo transmitter, a carrier generator, a clock transmitter, a regenerator, an receiver, a reconstructor, a detector, and a controller. The echo transmitter generates and transmits an echo transmission signal synchronously with a clock signal generated by the clock generator to wirelessly transmit an echo signal output from the col. The carrier generator generates a carrier signal have a frequency within a variable range. The clock transmitter wirelessly transmits a clock transmission signal. The regenerator regenerates the clock signal based on the transmitted clock transmission signal. The receiver extracts the echo signal synchronously with the regenerated clock signal from the transmitted echo transmission signal. The detector detects a frequency of an interference wave. The controller controls the carrier generator to generate the carrier signal having a frequency which comparatively small interference with respect to the detected frequency.
摘要翻译：根据一个实施例，一种装置包括线圈，时钟发生器，回波发射器，载波发生器，时钟发射器，再生器，接收器，重建器，检测器和控制器。回波发射机与由时钟发生器产生的时钟信号同步地生成和发送回波发送信号，以无线地发送从该列输出的回波信号。载波发生器产生具有可变范围内的频率的载波信号。时钟发射机无线传输时钟传输信号。再生器基于发送的时钟传输信号再生时钟信号。接收机从发送的回波发送信号中与再生的时钟信号同步地提取回波信号。检测器检测到干扰波的频率。控制器控制载波发生器以产生具有相对于检测到的频率具有相对小的干扰的频率的载波信号。

2. 发明授权

US08643362B2 Magnetic resonance imaging apparatus having controller that sets carrier frequencies outside detected interference bands 有权
标题翻译：具有控制器的磁共振成像设备，其将载波频率设置在检测到的干扰频带
公开(公告)号：US08643362B2
公开(公告)日：2014-02-04
申请号：US13048314
申请日：2011-03-15
申请人： Takahiro Sekiguchi , Koji Akita , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
发明人： Takahiro Sekiguchi , Koji Akita , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/44
CPC分类号： G01R33/3692 , G01R33/3607
摘要： According to one embodiment, a apparatus includes a coil, a clock generator, an echo transmitter, a carrier generator, a clock transmitter, a regenerator, an receiver, a reconstructor, a detector, and a controller. The echo transmitter generates and transmits an echo transmission signal synchronously with a clock signal generated by the clock generator to wirelessly transmit an echo signal output from the col. The carrier generator generates a carrier signal have a frequency within a variable range. The clock transmitter wirelessly transmits a clock transmission signal. The regenerator regenerates the clock signal based on the transmitted clock transmission signal. The receiver extracts the echo signal synchronously with the regenerated clock signal from the transmitted echo transmission signal. The detector detects a frequency of an interference wave. The controller controls the carrier generator to generate the carrier signal having a frequency which comparatively small interference with respect to the detected frequency.
摘要翻译：根据一个实施例，一种装置包括线圈，时钟发生器，回波发射器，载波发生器，时钟发射器，再生器，接收器，重建器，检测器和控制器。回波发射机与由时钟发生器产生的时钟信号同步地生成和发送回波发送信号，以无线地发送从该列输出的回波信号。载波发生器产生具有可变范围内的频率的载波信号。时钟发射机无线传输时钟传输信号。再生器基于发送的时钟传输信号再生时钟信号。接收机从发送的回波发送信号中与再生的时钟信号同步地提取回波信号。检测器检测到干扰波的频率。控制器控制载波发生器以产生具有相对于检测到的频率具有相对小的干扰的频率的载波信号。

3. 发明授权

US08704522B2 Magnetic resonance imaging apparatus including elements for phase correction of wireless transmissions 有权
标题翻译：磁共振成像设备包括用于无线传输的相位校正的元件
公开(公告)号：US08704522B2
公开(公告)日：2014-04-22
申请号：US13048343
申请日：2011-03-15
申请人： Koji Akita , Takahiro Sekiguchi , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
发明人： Koji Akita , Takahiro Sekiguchi , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/20
CPC分类号： G01R33/3692 , G01R33/3621
摘要： In one embodiment, an MRI apparatus includes first and second clock generators, a pulse generator, transmission and reception coils, pulse and phase detectors, and a corrector. The pulse generator generates an excitation pulse signal based on a clock signal generated by the first clock generator. The reception coil outputs a radio frequency signals corresponding to an excitation pulse transmitted from the transmission coil or an MR echo. The converter digitizes, synchronously with a clock signal generated by the second clock generator, the radio frequency signal, to obtain radio frequency data. The pulse detector detects excitation pulse data corresponding to the excitation pulse from the radio frequency data. The phase detector detects a phase of a pulse indicated by the detected excitation pulse data. The corrector corrects the radio frequency data based on the detected phase, to compensate for a phase offset which occurs in the echo during the digitization.
摘要翻译：在一个实施例中，MRI装置包括第一和第二时钟发生器，脉冲发生器，发射和接收线圈，脉冲和相位检测器以及校正器。脉冲发生器基于由第一时钟发生器产生的时钟信号产生激励脉冲信号。接收线圈输出与从发送线圈发送的激励脉冲或MR回波对应的射频信号。该转换器与由第二时钟发生器产生的时钟信号，射频信号同步地数字化，以获得射频数据。脉冲检测器从射频数据检测与激励脉冲对应的激励脉冲数据。相位检测器检测由检测到的激励脉冲数据指示的脉冲的相位。校正器基于检测到的相位来校正射频数据，以补偿在数字化期间在回波中发生的相位偏移。

4. 发明授权

US09052367B2 MRI RF coil control signals modulated onto the RF coil clock signal 有权
标题翻译： MRI RF线圈控制信号调制到RF线圈时钟信号上
公开(公告)号：US09052367B2
公开(公告)日：2015-06-09
申请号：US12939372
申请日：2010-11-04
申请人： Koji Akita , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
发明人： Koji Akita , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/36
CPC分类号： G01R33/3607 , G01R33/3621 , G01R33/3692
摘要： According to one embodiment, an apparatus includes a control unit and a coil unit. The control unit generates a first clock signal, generates a data signal to indicate an operating condition, modulates the first clock signal by the data signal to obtain a modulated signal, generates a clock transmission signal including the modulated signal, and emits the clock transmission signal. The coil unit converts the clock transmission signal into an electric signal, detects the modulated signal from the clock transmission signal, generates a second clock signal synchronous with the first clock signal from the modulated signal, detects an MR signal generated in a subject, digitizes, synchronously with the second clock signal, the MR signal, detects the data signal from the detected modulated signal by using of the second clock signal, controls the operating condition of the coil unit to be the operating condition indicated by the data signal.
摘要翻译：根据一个实施例，一种装置包括控制单元和线圈单元。控制单元产生第一时钟信号，产生数据信号以指示操作状态，通过数据信号调制第一时钟信号以获得调制信号，产生包括调制信号的时钟传输信号，并发出时钟传输信号。线圈单元将时钟传输信号转换为电信号，从时钟发送信号检测调制信号，从调制信号产生与第一时钟信号同步的第二时钟信号，检测在被摄体中产生的MR信号，与第二时钟信号同步，MR信号通过使用第二时钟信号从检测到的调制信号中检测数据信号，将线圈单元的工作状态控制为由数据信号指示的工作状态。

5. 发明授权

US08947091B2 Magnetic resonance imaging apparatus and method with wireless transmission of compressed echo signals that are expanded and extracted at the receiver 有权
标题翻译：磁共振成像装置和无线传输压缩回波信号的方法，其在接收机处被扩展和提取
公开(公告)号：US08947091B2
公开(公告)日：2015-02-03
申请号：US12915471
申请日：2010-10-29
申请人： Toshiyuki Nakanishi , Koji Akita , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
发明人： Toshiyuki Nakanishi , Koji Akita , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/36
CPC分类号： G01R33/3692 , G01R33/3621
摘要： According to one embodiment, an MRI apparatus includes a probe unit and a control/imaging unit. The probe unit includes a probe, a converter, a compressor and a transmitter. The control/imaging unit includes a receiver, an expander and a reconstructor. The probe detects an RF echo signal generated in a subject by a magnetic resonance phenomenon. The converter digitizes the detected signal. The compressor compresses the digitized signal in accordance with a predetermined compression parameter to obtain a compressed signal. The transmitter generates a transmission signal to wirelessly transmit the compressed echo signal and sends the transmission signal to a radio channel. The receiver receives the transmission signal and extracts the compressed signal from the received signal. The expander expands the extracted compressed signal in accordance with the parameter to obtain the RF echo signal. The reconstructor generates a video signal regarding the subject on the basis of the obtained signal.
摘要翻译：根据一个实施例，MRI装置包括探针单元和控制/成像单元。探头单元包括探头，转换器，压缩器和发射器。控制/成像单元包括接收器，扩展器和重建器。探头通过磁共振现象来检测被检体内产生的RF回波信号。转换器将检测到的信号数字化。压缩机根据预定的压缩参数压缩数字化信号以获得压缩信号。发射机产生一个传输信号以无线传输压缩的回波信号，并将传输信号发送到无线电信道。接收机接收发送信号并从接收信号中提取压缩信号。扩展器根据参数扩展提取的压缩信号以获得RF回波信号。重建器根据获得的信号产生关于被摄体的视频信号。

6. 发明申请

US20110227574A1 MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：磁共振成像装置
公开(公告)号：US20110227574A1
公开(公告)日：2011-09-22
申请号：US13048343
申请日：2011-03-15
申请人： Koji Akita , Takahiro Sekiguchi , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
发明人： Koji Akita , Takahiro Sekiguchi , Toshiyuki Nakanishi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/20
CPC分类号： G01R33/3692 , G01R33/3621
摘要： In one embodiment, an MRI apparatus includes first and second clock generators, a pulse generator, transmission and reception coils, pulse and phase detectors, and a corrector. The pulse generator generates an excitation pulse signal based on a clock signal generated by the first clock generator. The reception coil outputs a radio frequency signals corresponding to an excitation pulse transmitted from the transmission coil or an MR echo. The converter digitizes, synchronously with a clock signal generated by the second clock generator, the radio frequency signal, to obtain radio frequency data. The pulse detector detects excitation pulse data corresponding to the excitation pulse from the radio frequency data. The phase detector detects a phase of a pulse indicated by the detected excitation pulse data. The corrector corrects the radio frequency data based on the detected phase, to compensate for a phase offset which occurs in the echo during the digitization.
摘要翻译：在一个实施例中，MRI装置包括第一和第二时钟发生器，脉冲发生器，发射和接收线圈，脉冲和相位检测器以及校正器。脉冲发生器基于由第一时钟发生器产生的时钟信号产生激励脉冲信号。接收线圈输出与从发送线圈发送的激励脉冲或MR回波对应的射频信号。该转换器与由第二时钟发生器产生的时钟信号，射频信号同步地数字化，以获得射频数据。脉冲检测器从射频数据检测与激励脉冲对应的激励脉冲数据。相位检测器检测由检测到的激励脉冲数据指示的脉冲的相位。校正器基于检测到的相位来校正射频数据，以补偿在数字化期间在回波中发生的相位偏移。

7. 发明申请

US20110109316A1 MAGNETIC RESONANCE IMAGING APPARATUS, PHASE COMPARATOR, CONTROL UNIT AND COIL UNIT 有权
标题翻译：磁共振成像设备，相位比较器，控制单元和线圈单元
公开(公告)号：US20110109316A1
公开(公告)日：2011-05-12
申请号：US12939372
申请日：2010-11-04
申请人： Koji AKITA , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
发明人： Koji AKITA , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/36 , H03L7/06
CPC分类号： G01R33/3607 , G01R33/3621 , G01R33/3692
摘要： According to one embodiment, an apparatus includes a control unit and a coil unit. The control unit generates a first clock signal, generates a data signal to indicate an operating condition, modulates the first clock signal by the data signal to obtain a modulated signal, generates a clock transmission signal including the modulated signal, and emits the clock transmission signal. The coil unit converts the clock transmission signal into an electric signal, detects the modulated signal from the clock transmission signal, generates a second clock signal synchronous with the first clock signal from the modulated signal, detects an MR signal generated in a subject, digitizes, synchronously with the second clock signal, the MR signal, detects the data signal from the detected modulated signal by using of the second clock signal, controls the operating condition of the coil unit to be the operating condition indicated by the data signal.
摘要翻译：根据一个实施例，一种装置包括控制单元和线圈单元。控制单元产生第一时钟信号，产生数据信号以指示操作状态，通过数据信号调制第一时钟信号以获得调制信号，产生包括调制信号的时钟传输信号，并发出时钟传输信号。线圈单元将时钟传输信号转换为电信号，从时钟发送信号检测调制信号，从调制信号产生与第一时钟信号同步的第二时钟信号，检测在被摄体中产生的MR信号，与第二时钟信号同步，MR信号通过使用第二时钟信号从检测到的调制信号中检测数据信号，将线圈单元的工作状态控制为由数据信号指示的工作状态。

8. 发明申请

US20110101977A1 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：US20110101977A1
公开(公告)日：2011-05-05
申请号：US12915471
申请日：2010-10-29
申请人： Toshiyuki NAKANISHI , Koji Akita , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
发明人： Toshiyuki NAKANISHI , Koji Akita , Takahiro Sekiguchi , Kazuya Okamoto , Sojuro Kato
IPC分类号： G01R33/44
CPC分类号： G01R33/3692 , G01R33/3621
摘要： According to one embodiment, an MRI apparatus includes a probe unit and a control/imaging unit. The probe unit includes an probe, an converter, an compressor and a transmitter. The control/imaging unit includes a receiver, an expander and an reconstructor. The probe detects an RF echo signal generated in a subject by a magnetic resonance phenomenon. The converter digitizes the detected signal. The compressor compresses the digitized signal in accordance with a predetermined compression parameter to obtain a compressed signal. The transmitter generates a transmission signal to wirelessly transmit the compressed echo signal and sends the transmission signal to a radio channel. The receiver receives the transmission signal and extracts the compressed signal from the received signal. The expander expands the extracted compressed signal in accordance with the parameter to obtain the RF echo signal. The reconstructor generates a video signal regarding the subject on the basis of the obtained signal.
摘要翻译：根据一个实施例，MRI装置包括探针单元和控制/成像单元。探头单元包括探头，转换器，压缩器和发射器。控制/成像单元包括接收器，扩展器和重建器。探头通过磁共振现象来检测被检体内产生的RF回波信号。转换器将检测到的信号数字化。压缩机根据预定的压缩参数压缩数字化信号以获得压缩信号。发射机产生一个传输信号以无线传输压缩的回波信号，并将传输信号发送到无线电信道。接收机接收发送信号并从接收信号中提取压缩信号。扩展器根据参数扩展提取的压缩信号以获得RF回波信号。重建器根据获得的信号产生关于被摄体的视频信号。

9. 发明授权

US08971427B2 Wireless transceiver system and method 有权
标题翻译：无线收发系统及方法
公开(公告)号：US08971427B2
公开(公告)日：2015-03-03
申请号：US13553047
申请日：2012-07-19
申请人： Koji Akita , Takahiro Sekiguchi , Toshiyuki Nakanishi
发明人： Koji Akita , Takahiro Sekiguchi , Toshiyuki Nakanishi
IPC分类号： H04L27/28 , H04L27/26
CPC分类号： H04L27/2657 , H04L27/2671 , H04L27/2675
摘要： According to one embodiment, a wireless transceiver system includes a transmitter and a receiver. The transmitter includes a first generator, a second generator, a third generator. The second generator generates fixed data item that has bit values corresponding to the clock signal. The third generator performs OFDM modulation for the fixed data item. The receiver includes a first detector, a second detector, a PLL, a controller. The first detector is configured to detect an envelope that indicates amplitude in a time waveform. The controller is configured to control to operate the PLL from a first time point when the head part is detected to a second time point when a first period is elapsed.
摘要翻译：根据一个实施例，无线收发器系统包括发射机和接收机。发射机包括第一发生器，第二发生器，第三发生器。第二生成器生成具有对应于时钟信号的位值的固定数据项。第三发生器对固定数据项执行OFDM调制。接收机包括第一检测器，第二检测器，PLL，控制器。第一检测器被配置为检测指示时间波形中的振幅的包络。所述控制器被配置为当经过第一时间段时，从头部被检测到第一时间点的第一时间点来控制所述PLL的操作。

10. 发明申请

US20100117649A1 MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：磁共振成像装置
公开(公告)号：US20100117649A1
公开(公告)日：2010-05-13
申请号：US12614943
申请日：2009-11-09
申请人： Toshiyuki Nakanishi , Koji Akita , Hideo Kasami , Takahiro Sekiguchi
发明人： Toshiyuki Nakanishi , Koji Akita , Hideo Kasami , Takahiro Sekiguchi
IPC分类号： G01R33/44
CPC分类号： G01R33/3692 , G01R33/3607 , G01R33/3621
摘要： An apparatus including a probe unit and a control/imaging unit, the probe unit including a converter converting a sampled magnetic-resonance signal into a digital signal, a first transmitter converting the digital signal into a first-radio signal, a first receiver receiving a second-radio signal, and performing detection on the second-radio signal to obtain a first-received signal, and a clock-regeneration unit regenerating a clock component from the first-received signal to generate a regenerated-clock signal, the control/imaging unit including a second-receiver receiving the first-radio signal to obtain a second-received signal, a data processor performing data processing on the second-received signal in synchronism with a reference-clock signal to obtain a video signal, and a second transmitter including a modulator modulating a carrier wave using the reference-clock signal, the second transmitter converting the reference-clock signal into the second-radio signal and transmitting the second-radio signal through the second-wireless channel.
摘要翻译：一种包括探针单元和控制/成像单元的装置，所述探针单元包括将采样的磁共振信号转换为数字信号的转换器，将所述数字信号转换为第一无线电信号的第一发射机，第二无线电信号，并且对第二无线电信号执行检测以获得第一接收信号，以及时钟再生单元，从第一接收信号再生时钟分量以产生再生时钟信号，控制/成像单元，包括接收第一无线电信号的第二接收器以获得第二接收信号;数据处理器，与参考时钟信号同步地对第二接收信号执行数据处理，以获得视频信号;以及第二发射机包括使用参考时钟信号调制载波的调制器，第二发射机将参考时钟信号转换成第二无线电信号并发送第第二无线电信号通过第二无线信道。

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