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    • 5. 发明授权
    • MR imaging apparatus
    • MR成像装置
    • US5883514A
    • 1999-03-16
    • US803605
    • 1997-02-21
    • Akihiro Ishikawa
    • Akihiro Ishikawa
    • G01R33/48A61B5/055G01R33/561G01V3/00
    • G01R33/5615G01R33/5618
    • An MR imaging apparatus using NMR phenomenon includes a main magnet, a first, a second and a third gradient field coils, a RF coil, a RF emitter, a slice-selecting gradient field pulse generator, a reading gradient field pulse generator, a phase-encoding gradient field pulse generator, a designating device and a data processor. The phase-encoding gradient field pulse generator varies strengths of phase-encoding gradient field pulses such that, when a reference spin echo signal is placed in a middle position in a spin echo group and is first in the order within the spin echo group, phase encode amounts of the spin echo signals successively increase from the reference spin echo signal according to the order within the spin echo group. The strengths of the phase-encoding gradient field pulses are varied for gradient echo signals such that integrated phase encode amounts have absolute values successively decreasing according to the order, a direction in which the absolute values of the integrated phase encode amounts change is switched alternately with extension of a period of time, and the absolute values are greater than the absolute values of the integrated phase encode amounts of a gradient echo group having a shorter period of time.
    • 使用NMR现象的MR成像装置包括主磁体,第一,第二和第三梯度场线圈,RF线圈,RF发射器,切片选择梯度场脉冲发生器,读取梯度场脉冲发生器,相位 编码梯度场脉冲发生器,指定装置和数据处理器。 相位编码梯度场脉冲发生器改变相位编码梯度场脉冲的强度,使得当参考自旋回波信号置于自旋回波组中的中间位置并且首先在自旋回波组内时,其阶段 根据自旋回波组内的顺序,自旋回波信号的编码量从参考自旋回波信号连续增加。 对于梯度回波信号,相位编码梯度场脉冲的强度是变化的,使得积分相位编码量具有根据顺序连续减小的绝对值,积分相位编码量的绝对值改变的方向与 延长一段时间,并且绝对值大于具有较短时间段的梯度回波组的积分相位编码量的绝对值。
    • 10. 发明申请
    • OPTICAL BIOMETRIC SYSTEM AND METHOD FOR USING SAME
    • 光学生物量系统及其使用方法
    • US20150065890A1
    • 2015-03-05
    • US14391656
    • 2012-05-11
    • Akihiro IshikawaYoshihiro InoueTakashi AmitaSatoru KohnoHaruhide UdagawaYoshinori Masuda
    • Akihiro IshikawaYoshihiro InoueTakashi AmitaSatoru KohnoHaruhide UdagawaYoshinori Masuda
    • A61B5/00A61B5/026
    • A61B5/4064A61B5/0042A61B5/0062A61B5/0064A61B5/0261A61B5/6814A61B2562/046A61B2562/066
    • An optical biometric system (1) is characterized by being provided with: a first received light amount information acquisition unit (25) which acquires skin blood flow data relating to a skin blood flow in a wide range of the scalp of a subject by controlling the transmission/reception of light to/from a light transmission/reception unit (30) using a wide-range control table; and a selection control table creation unit (24) which causes a storage unit (23) to store a selection control table for acquiring X pieces of first received light amount information (ΔA1) selected from among N pieces of first received light amount information (ΔA1), and in that when acquiring multiple pieces of measurement data relating to the brain activity in a predetermined range of the brain of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using a control table, a light transmission/reception control unit (21) acquires skin blood flow data relating to a skin blood flow in a predetermined position of the scalp of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using the selection control table.
    • 一种光学生物测定系统(1)的特征在于具有:第一接收光量信息获取单元(25),其通过控制所述第一接收光量信息获取单元(25)获取与被摄体的头皮的宽范围内的皮肤血流相关的皮肤血流数据 使用宽范围控制表发送/接收来自光发送/接收单元(30)的光; 以及选择控制表创建单元,其使存储单元(23)存储用于获取从N个第一接收光量信息中选择的X个第一接收光量信息(&Dgr; A1)的选择控制表 (&Dgr; A1),并且当通过控制到/从光发送/接收单元(30)的光的发送/接收来获取与被摄体的脑的预定范围内的大脑活动相关的多条测量数据 ),光发送/接收控制单元(21)通过控制来自/来自光的光的发送/接收来获取与被摄体的头皮的预定位置中的皮肤血流相关的皮肤血流数据 发送/接收单元(30)。