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    • 2. 发明授权
    • Magnetic resonance diagnostic apparatus, magnetic resonance diagnostic main unit and coil unit
    • 磁共振诊断装置,磁共振诊断主体和线圈装置
    • US08174264B2
    • 2012-05-08
    • US12492960
    • 2009-06-26
    • Kohei AdachiKazuya Okamoto
    • Kohei AdachiKazuya Okamoto
    • G01V3/00
    • G01R33/3692
    • An magnetic resonance diagnostic apparatus which includes a main unit and a coil unit, the magnetic resonance diagnostic apparatus including a sampling clock generating unit which generates a sampling clock signal, a sampling clock transmitting unit wirelessly transmits the sampling clock signal, a sampling clock receiving unit which receives the transmitted sampling clock signal, a receiving coil which outputs an electrical magnetic resonance signal in response to a magnetic resonance signal emitted from a subject as electromagnetic radiation, a digitization unit which digitizes, synchronously with the received sampling clock signal, the outputted magnetic resonance signal, a resonance signal transmitting unit which wirelessly transmits the digitized magnetic resonance signal, a resonance signal receiving unit which receives the transmitted magnetic resonance signal, and a reconstruction unit which processes, synchronously with the generated sampling clock signal, the received magnetic resonance signal and thereby reconstructs an image of the subject.
    • 一种磁共振诊断装置,包括主单元和线圈单元,所述磁共振诊断装置包括:采样时钟生成单元,其生成采样时钟信号;采样时钟发送单元,无线发送采样时钟信号;采样时钟接收单元 接收发送的采样时钟信号的接收线圈,响应于从对象发射的磁共振信号作为电磁辐射输出电磁共振信号的接收线圈,与接收到的采样时钟信号同步数字化的数字化单元,输出的磁 谐振信号,无线发送数字化磁共振信号的谐振信号发送单元,接收发送的磁共振信号的谐振信号接收单元,以及与所生成的采样时钟信号同步处理所接收的磁铁的重建单元 c共振信号,从而重建对象的图像。
    • 3. 发明申请
    • MAGNETIC RESONANCE DIAGNOSTIC APPARATUS, MAGNETIC RESONANCE DIAGNOSTIC MAIN UNIT AND COIL UNIT
    • 磁共振诊断装置,磁共振诊断主体单元和线圈单元
    • US20090322335A1
    • 2009-12-31
    • US12492960
    • 2009-06-26
    • Kohei ADACHIKazuya OKAMOTO
    • Kohei ADACHIKazuya OKAMOTO
    • G01R33/48H03K3/00
    • G01R33/3692
    • An magnetic resonance diagnostic apparatus which includes a main unit and a coil unit, the magnetic resonance diagnostic apparatus including a sampling clock generating unit which generates a sampling clock signal, a sampling clock transmitting unit wirelessly transmits the sampling clock signal, a sampling clock receiving unit which receives the transmitted sampling clock signal, a receiving coil which outputs an electrical magnetic resonance signal in response to a magnetic resonance signal emitted from a subject as electromagnetic radiation, a digitization unit which digitizes, synchronously with the received sampling clock signal, the outputted magnetic resonance signal, a resonance signal transmitting unit which wirelessly transmits the digitized magnetic resonance signal, a resonance signal receiving unit which receives the transmitted magnetic resonance signal, and a reconstruction unit which processes, synchronously with the generated sampling clock signal, the received magnetic resonance signal and thereby reconstructs an image of the subject.
    • 一种磁共振诊断装置,包括主单元和线圈单元,所述磁共振诊断装置包括:采样时钟生成单元,其生成采样时钟信号;采样时钟发送单元,无线发送采样时钟信号;采样时钟接收单元 接收发送的采样时钟信号的接收线圈,响应于从对象发射的磁共振信号作为电磁辐射输出电磁共振信号的接收线圈,与接收到的采样时钟信号同步数字化的数字化单元,输出的磁 谐振信号,无线发送数字化磁共振信号的谐振信号发送单元,接收发送的磁共振信号的谐振信号接收单元,以及与所生成的采样时钟信号同步处理所接收的磁铁的重建单元 c共振信号,从而重建对象的图像。
    • 4. 发明申请
    • MRI apparatus and MRI method
    • MRI设备和MRI方法
    • US20080246475A1
    • 2008-10-09
    • US12078388
    • 2008-03-31
    • Kohei Adachi
    • Kohei Adachi
    • G01R33/48
    • G01R33/56572
    • An MRI apparatus includes an application unit that applies a readout gradient magnetic field in which magnetic field strength thereof varies with time and RF pulses to a subject placed in a static magnetic field in accordance with a predetermined pulse sequence; a receiving unit that receives an MR signal obtained from the subject to which the readout gradient magnetic field and the RF pulses are applied; an AD converter that converts the received MR signal from analog to digital, and samples discrete MR-signal values; a filtering control unit that performs filtering processing on the sampled discrete MR-signal values, including a filter-coefficient setting unit that sets a plurality of filter coefficients to be used for the filtering processing with respect to each point of sampling time at which the filtering processing is to be performed, based on time-shift amounts corresponding to variations in an MR-signal frequency arising from temporal variations in the magnetic field strength, and a product-sum operating unit that performs the filtering processing on the MR-signal values by performing a product-sum operation between the filter coefficients and the MR-signal values; and an image-data creating unit that creates image data based on the MR-signal values on which the filtering processing is performed.
    • MRI装置包括:应用单元,其根据预定的脉冲顺序将磁场强度随时间变化的读出梯度磁场和RF脉冲施加到位于静态磁场中的对象; 接收单元,其接收从被施加了读出梯度磁场和RF脉冲的对象获得的MR信号; AD转换器,将接收的MR信号从模拟转换为数字,并对离散MR信号值进行采样; 对所抽取的离散MR信号值执行滤波处理的滤波控制单元,该滤波器控制单元包括滤波器系数设定单元,该滤波器系数设定单元针对滤波处理使用的多个滤波器系数, 基于与由磁场强度的时间变化引起的MR信号频率的变化相对应的时移量进行处理,以及乘积和运算单元,对MR信号值进行滤波处理, 在滤波器系数和MR信号值之间执行乘积和运算; 以及图像数据创建单元,其基于执行了滤波处理的MR信号值来创建图像数据。
    • 8. 发明授权
    • MRI apparatus, signal selection method in MRI apparatus, and MRI method in magnetic resonance imaging apparatus
    • MRI装置,MRI装置中的信号选择方法,磁共振成像装置中的MRI方法
    • US07400148B2
    • 2008-07-15
    • US11386771
    • 2006-03-23
    • Kohei Adachi
    • Kohei Adachi
    • G01V3/00
    • G01R33/3621G01R33/3415
    • A magnetic resonance imaging includes: a first converter that converts some of the magnetic resonance signals, to be processed, corresponding to a plurality of channels into signals corresponding to a plurality of effective channels set within a first frequency band and converts magnetic resonance signals corresponding to other channels into signals corresponding to channels set within a second frequency band different from the first frequency band; a synthesizer that synthesizes the channel-converted signals; an extractor that extracts a signal included in the first frequency band from the synthesized signals; and a divider that divides the extracted signal into magnetic resonance signals corresponding to the plurality of effective channels.
    • 磁共振成像包括:将与多个通道相对应的待处理的一部分磁共振信号转换成与在第一频带内设置的多个有效通道相对应的信号的第一转换器,并将对应于 其他信道转换成与在与第一频带不同的第二频带内设置的信道相对应的信号; 合成通道转换信号的合成器; 提取器,从所述合成信号中提取包括在所述第一频带中的信号; 以及将所提取的信号分成与多个有效信道相对应的磁共振信号的分频器。