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1. 发明申请

US20150015256A1 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：US20150015256A1
公开(公告)日：2015-01-15
申请号：US14326790
申请日：2014-07-09
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Kazuyuki SOEJIMA
IPC分类号： G01R33/56
CPC分类号： G01R33/3621 , G01R33/3692
摘要： According to one embodiment, an MRI apparatus includes a data acquisition unit and an image generation unit. The data acquisition unit acquires an analog MR signal from an object and converts the analog MR signal into a digital MR signal. The image generation unit generates MR image data based on the digital MR signal. The data acquisition unit includes an AD converter, a signal processing part and a noise suppression part. The AD converter converts the analog MR signal, before a down conversion, into the digital MR signal, inside an imaging room. The signal processing part performs signal processing of the digital MR signal, inside the imaging room or outside the imaging room. The noise suppression part suppresses a noise arising caused by a conversion from the analog MR signal, before the down conversion, into the digital MR signal.
摘要翻译：根据一个实施例，MRI装置包括数据获取单元和图像生成单元。数据采集单元从对象获取模拟MR信号，并将模拟MR信号转换为数字MR信号。图像生成单元基于数字MR信号生成MR图像数据。数据采集单元包括AD转换器，信号处理部分和噪声抑制部分。 AD转换器将模拟MR信号在下变频之前转换成成像室内的数字MR信号。信号处理部分在成像室内或成像室外部执行数字MR信号的信号处理。噪声抑制部分抑制由下降转换之前的模拟MR信号转换成数字MR信号引起的噪声。

2. 发明申请

US20140232407A1 MAGNETIC RESONANCE IMAGING APPARATUS AND APPARATUS FOR MEASURING RADIO FREQUENCY OUTPUT FOR THE SAME 有权
标题翻译：用于测量无线电频率输出的磁共振成像装置和装置
公开(公告)号：US20140232407A1
公开(公告)日：2014-08-21
申请号：US14266195
申请日：2014-04-30
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Haruki NAKAMURA , Kazuyuki SOEJIMA , Sojiyuuro KATO
IPC分类号： G01R33/34
CPC分类号： G01R33/34092 , A61B5/0037 , A61B5/055 , A61B5/7203 , G01R33/3607 , G01R33/3621
摘要： An apparatus for measuring radio frequency output for a magnetic resonance imaging apparatus includes a plurality of directional couplers, a comparator, a switcher and a converter. The plurality of directional couplers are different in degree of coupling from each other, and attenuate an RF signal which is generated in an RF signal generator and amplified in an RF power amplifier. The comparator compares input-level information of a signal inputted into the RF power amplifier with a threshold value. The switcher switches to any one of the plurality of the directional couplers based on a result of the comparison so as to output an RF signal by the one directional coupler. The converter performs a digital conversion of the RF signal from the one directional coupler so as to output a digital signal.
摘要翻译：用于测量磁共振成像设备的射频输出的装置包括多个定向耦合器，比较器，切换器和转换器。多个定向耦合器在彼此耦合的程度上不同，并且衰减在RF信号发生器中产生并在RF功率放大器中放大的RF信号。比较器将输入到RF功率放大器的信号的输入电平信息与阈值进行比较。切换器基于比较的结果切换到多个定向耦合器中的任何一个，以便通过一个定向耦合器输出RF信号。转换器执行来自一个定向耦合器的RF信号的数字转换，以输出数字信号。

3. 发明申请

US20140070809A1 MAGNETIC RESONANCE IMAGING APPARATUS AND A POWER CONTROL METHOD OF A MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：磁共振成像装置和磁共振成像装置的功率控制方法
公开(公告)号：US20140070809A1
公开(公告)日：2014-03-13
申请号：US14068385
申请日：2013-10-31
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION , KABUSHIKI KAISHA TOSHIBA
发明人： Naoki IMAMURA , Motohisa YOKOI , Kazuyuki SOEJIMA , Motohiro MIURA , Sho KAWAJIRI , Haruki NAKAMURA
IPC分类号： G01R33/36
CPC分类号： G01R33/36
摘要： In one embodiment, an MRI apparatus (20A) includes a data acquisition system (22, 24, 26, 28, 29, 40, 42, 44, 46 and 48), a charge/discharge element (BAT) and a power control unit (52 and 309). The data acquisition system acquires nuclear magnetic resonance signals from an imaging region by performing a scan. The charge/discharge element is a part of an electric power system (304, 308a, 52, BD and BAU) of the MRI apparatus, and is charged with external electric power. The power control unit controls the electric power system in such a manner that at least one unit excluding the data acquisition system is supplied with electric power from the charge/discharge element.
摘要翻译：在一个实施例中，MRI装置（20A）包括数据采集系统（22,24,26,28,29,40,42,44,46和48），充电/放电元件（BAT）和功率控制单元（52和309）。数据采集系统通过执行扫描从成像区域获取核磁共振信号。充电/放电元件是MRI设备的电力系统（304,308a，52，BD和BAU）的一部分，并且被外部电力充电。电力控制单元以从充电/放电元件向电力供给除了数据采集系统的至少一个单元的方式控制电力系统。

4. 发明申请

US20140132266A1 MAGNETIC RESONANCE IMAGING APPARATUS AND TRANSMISSION CONTROL METHOD 有权
标题翻译：磁共振成像装置和传动控制方法
公开(公告)号：US20140132266A1
公开(公告)日：2014-05-15
申请号：US14162094
申请日：2014-01-23
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION , KABUSHIKI KAISHA TOSHIBA
发明人： Kazuyuki SOEJIMA , Haruki NAKAMURA , Takuma KAWAI , Kazuya OKAMOTO
IPC分类号： G01R33/54 , G01R33/36
CPC分类号： G01R33/543 , A61B5/0037 , A61B5/055 , G01R33/36 , G01R33/3607 , G01R33/5612
摘要： According to one embodiment, a magnetic resonance imaging apparatus provided with a plurality of transmission channels includes a signal processing unit and a control unit. The signal processing unit acquires a radio frequency magnetic field emitted from each of the plurality of transmission channels through a receiver coil mounted on an object and measure a phase of the radio frequency magnetic field. The control unit determines a phase difference between the plurality of transmission channels based on the phase of the radio frequency magnetic field of each of the plurality of transmission channels measured by the signal processing unit. The control unit controls a phase of a radio frequency pulse inputted to each of the plurality of transmission channels, based on the phase difference.
摘要翻译：根据一个实施例，具有多个传输通道的磁共振成像设备包括信号处理单元和控制单元。信号处理单元通过安装在物体上的接收器线圈获取从多个传输通道中的每一个发射的射频磁场，并测量射频磁场的相位。控制单元基于由信号处理单元测量的多个传输通道中的每一个的射频磁场的相位来确定多个传输信道之间的相位差。控制单元基于相位差控制输入到多个传输信道中的每一个的射频脉冲的相位。

5. 发明申请

US20160169991A1 MAGNETIC RESONANCE IMAGING APPARATUS 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：US20160169991A1
公开(公告)日：2016-06-16
申请号：US14961245
申请日：2015-12-07
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Sojiyuuro KATO , Kazuya OKAMOTO , Kazuyuki SOEJIMA
IPC分类号： G01R33/36 , G01R33/54
CPC分类号： G01R33/3692
摘要： In one embodiment, an MRI apparatus includes a wireless RF coil; a control side oscillator configured to output a control-side clock signal used for executing a pulse sequence; and a synchronization signal transmission circuit configured to wirelessly transmit a synchronization signal to the wireless RF coil in an executing period of the pulse sequence, except an MR-signal detection period during which the wireless RF coil detects a magnetic resonance signal, wherein the synchronization signal is within a frequency band of a Larmor frequency and reflects a phase of the control-side clock signal.
摘要翻译：在一个实施例中，MRI装置包括无线RF线圈; 控制侧振荡器，被配置为输出用于执行脉冲序列的控制侧时钟信号; 以及同步信号发送电路，其被配置为在所述无线RF线圈检测到磁共振信号的MR信号检测期间除了在所述脉冲序列的执行期间内向所述无线RF线圈无线地发送同步信号，其中，所述同步信号在拉莫尔频率的频带内，并且反映控制侧时钟信号的相位。

6. 发明申请

US20160003925A1 MRI APPARATUS 审中-公开
标题翻译： MRI装置
公开(公告)号：US20160003925A1
公开(公告)日：2016-01-07
申请号：US14750272
申请日：2015-06-25
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Haruki NAKAMURA , Kazuyuki SOEJIMA
IPC分类号： G01R33/34 , G01R33/565 , G01R33/36
CPC分类号： G01R33/5659 , G01R33/288 , G01R33/3614
摘要： According to one embodiment, an MRI apparatus includes an amplifier and processing circuitry. The amplifier amplifies an RF pulse and outputs the amplified RF pulse to an RF coil. The processing circuitry performs correction processing on an envelope of an RF pulse to be inputted to the amplifier so as to compensate nonlinear input-output characteristics of the amplifier. As to this correction processing, the processing circuitry selects a correction information item out of a plurality of correction information items prepared for a corresponding plurality of imaging conditions and performs the correction processing by using the selected information item.
摘要翻译：根据一个实施例，MRI装置包括放大器和处理电路。放大器放大RF脉冲，并将放大的RF脉冲输出到RF线圈。处理电路对要输入到放大器的RF脉冲的包络进行校正处理，以补偿放大器的非线性输入 - 输出特性。关于该校正处理，处理电路从针对对应的多个成像条件准备的多个校正信息项中选择校正信息项，并且使用所选择的信息项执行校正处理。

7. 发明申请

US20150276910A1 MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD 审中-公开
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US20150276910A1
公开(公告)日：2015-10-01
申请号：US14738276
申请日：2015-06-12
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Kazuyuki SOEJIMA , Sojuro KATO , Makoto HIRAMA
IPC分类号： G01R33/565 , G01R33/48 , G01R33/385
CPC分类号： G01R33/3621
摘要： According to one embodiment, a magnetic resonance imaging apparatus includes a static field magnet, a gradient coil, at least one radio frequency coil, a receiver and processing circuitry. The static field magnet, the gradient coil, the at least one radio frequency coil and the receiver are configured to acquire magnetic resonance signals from an object. The processing circuitry is configured to generate magnetic resonance image data based on the magnetic resonance signals. The receiver is configured to convert analog magnetic resonance signals received by the at least one radio frequency coil into digital magnetic resonance signals without a downconversion; separate the digital magnetic resonance signals into in-phase signals and quadrature-phase signals; and perform filter processing for removing noises of the in-phase signals and the quadrature-phase signals.
摘要翻译：根据一个实施例，磁共振成像装置包括静磁场磁铁，梯度线圈，至少一个射频线圈，接收器和处理电路。静磁场，梯度线圈，至少一个射频线圈和接收器被配置成从物体获取磁共振信号。处理电路被配置为基于磁共振信号产生磁共振图像数据。接收器被配置为将由至少一个射频线圈接收的模拟磁共振信号转换成数字磁共振信号而不进行下变频; 将数字磁共振信号分离为同相信号和正交相位信号; 并执行用于去除同相信号和正交相位信号的噪声的滤波处理。

8. 发明申请

US20140300362A1 MAGNETIC RESONANCE IMAGING DEVICE 有权
标题翻译：磁共振成像装置
公开(公告)号：US20140300362A1
公开(公告)日：2014-10-09
申请号：US14314465
申请日：2014-06-25
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Sho KAWAJIRI , Motohisa YOKOI , Motohiro MIURA , Masashi HORI , Kazuyuki SOEJIMA , Naoki IMAMURA , Haruki NAKAMURA
IPC分类号： G01R33/385
CPC分类号： G01R33/3852 , A61B5/055 , G01R33/5616
摘要： A magnetic resonance imaging device according to an embodiment includes a gradient amplifier, a battery, a detector, and a battery controller. The gradient amplifier supplies electric power to the gradient coil. The battery is charged with electric power that is supplied from the power supply. The detector detects a high power output request on the gradient amplifier. The battery controller controls to supply electric power charged in the battery in addition to electric power supplied from the power supply to the gradient amplifier when the high power output request is detected.
摘要翻译：根据实施例的磁共振成像装置包括梯度放大器，电池，检测器和电池控制器。梯度放大器向梯度线圈提供电力。电池由电源供电。检测器在梯度放大器上检测到高功率输出请求。当检测到高功率输出请求时，电池控制器控制除了从电源向梯度放大器提供的电力之外，还提供充电电池中的电力。

9. 发明申请

US20140070812A1 IMAGE DIAGNOSIS APPARATUS AND POWER CONTROL METHOD OF AN IMAGE DIAGNOSIS APPARATUS 审中-公开
标题翻译：图像诊断装置和图像诊断装置的功率控制方法
公开(公告)号：US20140070812A1
公开(公告)日：2014-03-13
申请号：US14068361
申请日：2013-10-31
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION , KABUSHIKI KAISHA TOSHIBA
发明人： Motohisa YOKOI , Motohiro MIURA , Sho KAWAJIRI , Kazuyuki SOEJIMA , Haruki NAKAMURA , Naoki IMAMURA
IPC分类号： G01R33/48 , A61B6/03
CPC分类号： G01R33/48 , A61B6/03 , A61B6/032 , A61B6/56 , G01R33/36
摘要： In one embodiment, the image diagnosis apparatus (20) generates image data of an object by using external electric power, and includes a charge/discharge element (BA1, . . . BAn) and a charge/discharge control circuit (140, 152). The charge/discharge element is charged with the external electric power and supply a part of the consumed power of the image diagnosis apparatus by discharging. The charge/discharge control circuit controls charge and discharge of the charge/discharge element in such a manner that the charge/discharge element discharges in a period during which the consumed power is larger than a predetermined power amount and the charge/discharge element is charged in a period during which the consumed power is smaller than the predetermined power amount.
摘要翻译：在一个实施例中，图像诊断装置（20）通过使用外部电力产生对象的图像数据，并且包括充电/放电元件（BA1，...，BAn）和充电/放电控制电路（140,152）。充电/放电元件被外部电力充电，并通过放电来提供图像诊断装置的消耗功率的一部分。充放电控制电路以充电/放电元件在消耗功率大于预定电力量并且充电/放电元件充电的时段内放电的方式控制充电/放电元件的充电和放电在消耗功率小于预定功率量的期间。

10. 发明申请

US20180106878A1 MAGNETIC RESONANCE IMAGING APPARATUS AND TRANSMISSION CONTROL METHOD 审中-公开
公开(公告)号：US20180106878A1
公开(公告)日：2018-04-19
申请号：US15820718
申请日：2017-11-22
申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION
发明人： Kazuyuki SOEJIMA , Haruki NAKAMURA , Takuma KAWAI , Kazuya OKAMOTO
IPC分类号： G01R33/54 , G01R33/36 , A61B5/055 , A61B5/00 , G01R33/561
CPC分类号： G01R33/543 , A61B5/0037 , A61B5/055 , G01R33/36 , G01R33/3607 , G01R33/5612
摘要： According to one embodiment, a magnetic resonance imaging apparatus provided with a plurality of transmission channels includes a signal processing unit and a control unit. The signal processing unit acquires a radio frequency magnetic field emitted from each of the plurality of transmission channels through a receiver coil mounted on an object and measure a phase of the radio frequency magnetic field. The control unit determines a phase difference between the plurality of transmission channels based on the phase of the radio frequency magnetic field of each of the plurality of transmission channels measured by the signal processing unit. The control unit controls a phase of a radio frequency pulse inputted to each of the plurality of transmission channels, based on the phase difference.

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