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公开(公告)号：US5285385A
公开(公告)日：1994-02-08
申请号：US495801
申请日：1990-03-16
CPC分类号： A61B5/04005
摘要： An estimated current dipole displaying system in which a weak magnetic field generated from the heart or brain is measured to estimate the position, direction, magnitude and depth from a body surface of a current dipole which is equivalent to a heart current or a current flowing in a nerve and the estimated current dipole is displayed on a two-dimensional display. A parameter, other than that used to indicate the magnitude and those inappropriate for combined use with the magnitude indicating parameter, is used as a depth indicating parameter and the current dipole is thus displayed.
摘要翻译： 测量从心脏或大脑产生的弱磁场的估计的当前偶极显示系统，以估计来自当前偶极子的体表的位置，方向，大小和深度，其相当于心电流或流过的电流 神经和估计的电流偶极显示在二维显示器上。 除了用于指示大小的参数和与幅度指示参数组合使用的不合适的参数被用作深度指示参数，并且因此显示当前偶极子。
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62.发明授权
公开(公告)号：US5113136A
公开(公告)日：1992-05-12
申请号：US468360
申请日：1990-01-22
IPC分类号： G01R33/025
CPC分类号： G01R33/025
摘要： An apparatus is provided for measuring a very weak magnetic field generated by a human body, etc. External magnetic noise components coming from other magnetic sources and existing around an object whose magnetic field is to be measured are detected by compensation coils of the apparatus. The compensation coils are oriented in multiple dimensional directions. The detected noise components are weighted and added to each other to correctly find the noise components. Thereafter, the noise components mixed in the objective very weak magnetic field are removed, thereby correctly measuring the very weak magnetic field.
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公开(公告)号：US4655228A
公开(公告)日：1987-04-07
申请号：US675869
申请日：1984-11-28
申请人： Takaki Shimura , Keiichi Murakami , Yutaka Igarashi , Akira Shiba , Hajime Hayashi , Hirohide Miwa , Michitoshi Inoue , Masayuki Matsumoto
发明人： Takaki Shimura , Keiichi Murakami , Yutaka Igarashi , Akira Shiba , Hajime Hayashi , Hirohide Miwa , Michitoshi Inoue , Masayuki Matsumoto
CPC分类号： G01S15/8977 , G01S7/52025 , G01S7/52036
摘要： A diagnosis apparatus for discriminating a property of the tissue to be observed from the reflected ultrasonic wave uses the nature of the fine structure of the tissue, and more practically uses the interval of small reflecting bodies dispersely distributed in the tissue as the parameters. The intervals flucatuate. Therefore, an average value and/or a degree of fluctuation is calculated and is displayed. For obtaining the average interval, a method of using the cepstrum of the received signal or a method of using the self-correlation of the received signal can be used.
摘要翻译： 用于从反射的超声波中区分要观察的组织的性质的诊断装置使用组织的精细结构的性质，更实际上使用分散在组织中的小反射体的间隔作为参数。 间隔流血。 因此，计算平均值和/或波动程度并显示。 为了获得平均间隔，可以使用使用接收信号的倒频谱的方法或使用接收信号的自相关的方法。
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公开(公告)号：US4034317A
公开(公告)日：1977-07-05
申请号：US663703
申请日：1976-03-04
申请人： Michihiko Uemura , Tohru Kanbara , Yutaka Igarashi
发明人： Michihiko Uemura , Tohru Kanbara , Yutaka Igarashi
摘要： A multiple reflection type solid ultrasonic delay line which comprises a solid ultrasonic delay medium in the form of a thin flat plate having input and output transducers and reflection elements formed on the periphery thereof, and one or more arc grooves provided on part of side surfaces which is other than desirable reflection elements for ultrasonic vibration and a low melting metal or alloy being provided in said arc grooves. In the delay lines, undesirable signals are remarkably attenuated.
摘要翻译： 一种多反射型固体超声波延迟线，其包括具有输入和输出换能器的薄平板形式的固体超声波延迟介质和形成在其周边上的反射元件，以及设置在侧面的一部分上的一个或多个弧形槽 是用于超声波振动的理想反射元件和在所述电弧槽内设置的低熔点金属或合金。 在延迟线中，不期望的信号显着衰减。
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