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1. 发明专利

JP2005080951A Living body magnetic field measuring apparatus 有权
标题翻译：生活体磁场测量装置
公开(公告)号：JP2005080951A
公开(公告)日：2005-03-31
申请号：JP2003317705
申请日：2003-09-10
申请人： Hitachi High-Technologies Corp , Hitachi Ltd , 株式会社日立ハイテクノロジーズ , 株式会社日立製作所
发明人： OGATA KUNIOMI , KANDORI AKIHIKO , MIYASHITA TAKESHI , TSUKADA KEIJI
IPC分类号： G01R33/28 , A61B5/04 , A61B5/0452 , A61B5/05 , A61B5/055 , A61B6/03 , G06T1/00 , G06T15/00
CPC分类号： A61B5/04007 , A61B5/0044
摘要： PROBLEM TO BE SOLVED: To provide a living body magnetic field measuring apparatus capable of visualizing the electric current distribution within a cardiac muscle according to a heart figure. SOLUTION: A magnetic component in the z direction perpendicular to the breast plane is measured from two directions of the front plane 17 and the rear plane 18 of a breast portion, and the electric current distribution and the intensity distribution of the electric current distribution in the two direction are calculated. A three dimensional standard model are made according to the average data relating to the heart figure of a healthy person, and position alignment is performed using the coordinate of a nodus sinuatrialis and the coordinate of a left ventricle region. In a set boundary 20, a weighting factor is calculated in which the electric current distribution and the intensity distribution of the electric current distribution in the front plane and the rear plane of the breast portion best coincide, after correcting an electric current level, the electric current distribution and the intensity distribution of the electric current distribution in the two direction are projected to the three dimensional standard model to obtain the three dimensional display of an electric current distribution image within the cardiac muscle. A white region 31 with the small intensity of an electric current vector, a gray region 32 with the middle intensity of the same, and a black region 33 with the large intensity of the same, and electric vectors 30 are displayed on the standard model 29 after the position alignment. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种能够根据心脏图形来显示心肌内的电流分布的生物体磁场测量装置。解决方案：从乳房部分的前平面17和后平面18的两个方向测量垂直于乳房平面的z方向上的磁性分量，并且电流分布和电流强度分布计算两个方向的分布。根据与健康人的心脏图像相关的平均数据制作三维标准模型，并使用鼻窦的坐标和左心室区域的坐标进行位置对准。在设定边界20中，计算加权系数，其中，校正电流水平之后，乳房部分的前面和后面中的电流分布的电流分布和强度分布最好一致，将电流分布和两个方向上的电流分布的强度分布投影到三维标准模型，以获得心肌内的电流分布图像的三维显示。具有小电流矢量强度的白色区域31，具有中等强度的灰色区域32和具有大强度的黑色区域33以及电子矢量30显示在标准模型29上位置对齐后。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005016960A Apparatus for measuring magnetic field 有权
标题翻译：用于测量磁场的装置
公开(公告)号：JP2005016960A
公开(公告)日：2005-01-20
申请号：JP2003177826
申请日：2003-06-23
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： KANDORI AKIHIKO , TSUKADA KEIJI , SUZUKI DAISUKE
IPC分类号： A61B5/05 , G01R33/035 , H01L39/04
CPC分类号： G01R33/0354
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for measuring magnetic field which reduces interfering magnetic fields entering a detecting coil. SOLUTION: The apparatus for measuring magnetic field comprises a SQUID magnetic flux meter provided with the detecting coil 1 for detecting magnetic fields from an object to be inspected S; a SQUID drive circuit 3 for driving the SQUID magnetic flux meter; a magnetic flux meter 15 for detecting the interfering magnetic fields; a magnetic flux meter drive circuit 14 for driving the magnetic flux meter 15; a modulating circuit 11 for modulating the output of the magnetic flux meter drive circuit 14; a current conversion device 10 for converting the output of the modulating circuit 11 into the amount of current; and a current amount adjusting means 9 for adjusting the converted amount of current. The magnetic field measuring apparatus comprises a coil 8 arranged outside the detecting coil 1 for passing a current adjusted by the current amount adjusting means 9; a detection circuit 4 for detecting the output of the SQUID drive circuit 3; an LPF 13 for extracting the low-frequency components of an output voltage of the detecting circuit 4; and a subtraction circuit 5 for subtracting the output of the LPF 13 from the output of the SQUID drive circuit 3. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种减小干扰磁场进入检测线圈的磁场测量装置。解决方案：用于测量磁场的装置包括：SQUID磁通计，其设置有用于检测来自被检体S的磁场的检测线圈1; 用于驱动SQUID磁通计的SQUID驱动电路3; 用于检测干扰磁场的磁通量计15; 用于驱动磁通量计15的磁通计驱动电路14; 用于调制磁通计驱动电路14的输出的调制电路11; 电流转换装置10，用于将调制电路11的输出转换成电流量; 以及用于调整转换的电流量的电流量调节装置9。磁场测量装置包括布置在检测线圈1外部的线圈8，用于通过由电流量调节装置9调节的电流; 用于检测SQUID驱动电路3的输出的检测电路4; 用于提取检测电路4的输出电压的低频分量的LPF13; 以及减法电路5，用于从SQUID驱动电路3的输出中减去LPF13的输出。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004065605A Biological magnetic field measuring instrument 有权
公开(公告)号：JP2004065605A
公开(公告)日：2004-03-04
申请号：JP2002229397
申请日：2002-08-07
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： KANDORI AKIHIKO , MIYASHITA TAKESHI , TSUKADA KEIJI , MURAKAMI MASAHIRO , OGATA KUNIOMI
IPC分类号： G01R33/035 , A61B5/04 , A61B5/0402 , A61B5/0452 , A61B5/05
CPC分类号： A61B5/04007 , A61B5/7239
摘要： PROBLEM TO BE SOLVED: To provide a biological magnetic field measuring instrument which can detect the peak time of each waveform such as P wave, QRS wave or T wave from a magnetic field waveform generated from the heart of a fetal body.
SOLUTION: (l) A magnetic field waveform generated from the heart of a mother body is removed from the waveform 301 of the measured biological magnetic field in processes 313, 302 to 304. (2) A template waveform of the magnetic field waveform generated from the heart of the fetal body is obtained from a waveform 305, from which the magnetic field waveform generated from the heart of the mother body has been removed, in processes 306 and 307. (3) A waveform of a mutual correlation coefficient between the waveform, from which the magnetic field waveform generated from the heart of the mother body has been removed, and the template waveform is obtained in processes 308 and 309. (4) The peak is detected from the waveform of the mutual correlation coefficient in a process 310. This biological magnetic field measuring instrument performs the processes (1) to (4), and an appearing time 311 for the detected peak is displayed on a displaying device.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2003334174A Biomagnetic field measuring instrument 有权
标题翻译：生物测量仪器
公开(公告)号：JP2003334174A
公开(公告)日：2003-11-25
申请号：JP2002147051
申请日：2002-05-22
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： OGATA KUNIOMI , KANDORI AKIHIKO , MIYASHITA TAKESHI , TSUKADA KEIJI
IPC分类号： G01R33/035 , A61B5/05 , A61B5/055 , A61B6/00 , A61B6/03 , G01R33/30 , G01R33/54 , G06T1/00 , G06T3/00 , G06T15/00
摘要： PROBLEM TO BE SOLVED: To provide a biomagnetic field measuring instrument which displays the electric current distribution visually made easy to understand, while conforming to the shape of a standard heart model. SOLUTION: This biomagnetic field measuring instrument is provided with a plurality of fluxmeters two-dimensionally disposed at the coordinate positions of the (x and y) in parallel with the breast surface of a living body for measuring the time-based change of a magnetic field component in the z direction perpendicular to the xy plane in the biomagnetic field, as well as those of magnetic field components in the x direction and y direction in parallel with the xy plane in the biomagnetic field, an arithmetic unit for performing computations on signals outputted by the plurality of fluxmeters, and a display unit for displaying the computation results. The display unit shows selection buttons to select operations for performing alignment of data expressing to two-dimensional heart model or a three-dimensional heart model, and according to the selected button, displays its operation result on the screen. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种符合标准心脏模型的形状的生物磁场测量仪器，其显示视觉上易于理解的电流分布。解决方案：该生物磁场测量仪器设置有二维地设置在与生物体的乳房表面平行的（x和y）的坐标位置处的多个磁通计，用于测量基于时间的变化在生物磁场中垂直于xy平面的z方向上的磁场分量以及与生物磁场中的xy平面平行的x方向和y方向上的磁场分量的磁场分量，用于执行计算的运算单元由多个通量计输出的开启信号，以及显示计算结果的显示单元。显示单元显示选择按钮，以选择用于对表示为二维心脏模型或三维心脏模型的数据进行对准的操作，并且根据所选择的按钮，在屏幕上显示其操作结果。版权所有（C）2004，JPO

5. 发明专利

JP2004313608A Living body magnetic field measuring apparatus 有权
公开(公告)号：JP2004313608A
公开(公告)日：2004-11-11
申请号：JP2003114508
申请日：2003-04-18
申请人： Hitachi High-Technologies Corp , 株式会社日立ハイテクノロジーズ
发明人： KANDORI AKIHIKO , TSUKADA KEIJI , MIYASHITA TAKESHI , OGATA KUNIOMI
IPC分类号： G01R33/02 , A61B5/04 , A61B5/05 , G01R33/035
CPC分类号： A61B5/04007
摘要： PROBLEM TO BE SOLVED: To provide a living body magnetic field measuring technique capable of non-invasively obtaining a potential waveform corresponding to the membrane potential of the myocardial cell. SOLUTION: The apparatus has a fluxmeter operating circuit 4, a means including means 5 and 6 for collecting the output data of the fluxmeter operating circuit and calculating an electric current vector at time t, a means for calculating the absolute value I xy of the electric current vector, a means for calculating a potential waveform V(t) from the absolute value of the electric current vector within the time corresponding to heart depolarization, and a means for calculating the potential waveform V(t) from the absolute value of the electric current vector within the inactive time zone and the time zone corresponding to repolarization of the heart. COPYRIGHT: (C)2005,JPO&NCIPI

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