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1. 发明授权

US5078141A Method and system for acquiring image representing brain surface anatomy 失效
标题翻译：用于获取表示脑表面解剖的图像的方法和系统
公开(公告)号：US5078141A
公开(公告)日：1992-01-07
申请号：US697498
申请日：1991-05-03
申请人： Hirokazu Suzuki , Yoshio Machida , Masahiko Hatanaka
发明人： Hirokazu Suzuki , Yoshio Machida , Masahiko Hatanaka
IPC分类号： G01R33/485 , G01R33/54 , G01R33/56 , H04N13/00
CPC分类号： G01R33/4833 , G01R33/485 , H04N13/04 , G01R33/56 , H04N13/0253
摘要： In an MRI system, in order to acquire an MR image representing a brain surface anatomy of a head of a subject, a surface coil is disposed near the head of the subject, and a predetermined pulse sequence by a spin echo method, a field echo method, or the like is performed. A view direction is changed for a single slice, and an MR image based on stereoscopic viewing is obtained by a single scan. Regions of interest are set on the brain surface portion on the MR image, and then a predetermined pulse sequence is using an echo time for inhibiting mr signals from fat of the brain surface and using a pulse repetition time for enhancing mr signals from water of the brain surface in order performed to obtain projection data in a direction of depth, thereby allowing accurate grasping of the position of a disease portion.
摘要翻译：在MRI系统中，为了获取表示被检体的头部的脑表面解剖结构的MR图像，表面线圈设置在被检体的头部附近，通过自旋回波法，场回波方法等。对于单个切片改变视图方向，并且通过单次扫描获得基于立体观看的MR图像。感兴趣区域设置在MR图像的脑表面部分上，然后预定的脉冲序列使用回波时间来抑制来自脑表面的脂肪的mr信号，并且使用脉冲重复时间来增强来自脑的水的mr信号脑表面，以便在深度方向上获得投影数据，从而允许精确地掌握疾病部位的位置。

2. 发明授权

US4745364A Method and apparatus for rapid NMR imaging 失效
标题翻译：用于快速NMR成像的方法和装置
公开(公告)号：US4745364A
公开(公告)日：1988-05-17
申请号：US877762
申请日：1986-06-24
申请人： Masahiko Hatanaka
发明人： Masahiko Hatanaka
IPC分类号： A61B10/00 , A61B5/055 , G01R33/48 , G01R33/54 , G01R33/561 , G01R33/565 , G06T1/00 , G01R33/20
CPC分类号： G01R33/482 , G01R33/561 , G01R33/56563
摘要： A method and apparatus provides complete mensuration of two-dimensional Fourier components of a nuclear spin property thereby permitting undistorted image reconstruction. In spite of an unavoidable phase factor which originates from basic field inhomogeneities and drifts and from non-perfect electronics adjustment, an optimum sectional image is obtained from half measurements of the sampled resonance signals which are complex conjugate pairs. The image is obtained by determining the phase and then eliminating it from a spatial Fourier transform of the spin density distribution.
摘要翻译：一种方法和装置提供核自旋特性的二维傅立叶分量的完全测定，从而允许不失真的图像重建。尽管源自基本场不均匀性和漂移以及非完美电子调整的不可避免的相位因子，但是通过作为复共轭对的采样谐振信号的半数测量获得最佳截面图像。通过确定相位然后从自旋密度分布的空间傅里叶变换中消除图像来获得图像。

3. 发明授权

US5531223A Method and apparatus of nuclear magnetic resonance imaging with nonlinearly processed image display 失效
标题翻译：具有非线性处理图像显示的核磁共振成像方法和装置
公开(公告)号：US5531223A
公开(公告)日：1996-07-02
申请号：US265686
申请日：1994-06-23
申请人： Masahiko Hatanaka
发明人： Masahiko Hatanaka
IPC分类号： A61B5/055 , G01R33/48 , G01R33/56 , G01R33/563
CPC分类号： G01R33/56 , G01R33/563
摘要： A method and an apparatus of nuclear magnetic resonance imaging capable of reducing the processing time in general, providing the nuclear magnetic resonance images with improved contrast among the imaged elements and reduced background noises, providing thee nuclear magnetic resonance images in which the preliminary processing using thresholds in various image processings becomes easier, and reducing the imaging time in obtaining the SAS image of high contrast resolution and satisfactory three dimensional quality. In the apparatus, a predetermined imaging pulse sequence is carried out in order to obtain nuclear magnetic resonance image data; a nonlinear operation is applied on the nuclear magnetic resonance image data in order to obtain contrast enhanced image data; and an image given by the contrast enhanced image data is displayed.
摘要翻译：核磁共振成像的方法和装置一般可以减少处理时间，为成像元件提供改善的对比度的核磁共振图像和降低的背景噪声，提供核磁共振图像，其中初步处理使用阈值在各种图像处理中变得更容易，并且在获得高对比度分辨率的SAS图像和令人满意的三维质量的同时减少成像时间。在该装置中，为了获得核磁共振图像数据，执行预定的成像脉冲序列; 对核磁共振图像数据应用非线性操作，以获得对比度增强的图像数据; 并且显示由对比度增强图像数据给出的图像。

4. 发明授权

US4799013A Method for detecting and processing magnetic resonance signals 失效
标题翻译：检测和处理磁共振信号的方法
公开(公告)号：US4799013A
公开(公告)日：1989-01-17
申请号：US147157
申请日：1988-01-21
申请人： Masahiko Hatanaka
发明人： Masahiko Hatanaka
IPC分类号： G01R33/28 , A61B5/055 , A61B10/00 , G01R33/44 , G01R33/48 , G01R33/54 , G01R33/561 , G01R33/565 , G01R33/20
CPC分类号： G01R33/482 , G01R33/56554 , G01R33/5617
摘要： First and second MR (magnetic resonance) echo signals are detected from the subject by means of a spin echo method. These MR echo signals have been provided with different phase encoding data by applying the gradient magnetic fields. As a result, first and second MR echo signal data are acquired from a single Fourier plane. These MR echo signal data are amplitude-corrected and phase-corrected. Then, they are subjected to Fourier transform, thereby forming an MR image of the subject within a short time.
摘要翻译：通过自旋回波法从对象检测第一和第二MR（磁共振）回波信号。这些MR回波信号通过施加梯度磁场而被提供有不同的相位编码数据。结果，从单个傅立叶平面获取第一和第二MR回波信号数据。这些MR回波信号数据进行幅度校正和相位校正。然后，进行傅里叶变换，从而在短时间内形成被检体的MR图像。

5. 发明授权

US5377679A Magnetic resonance imaging system 失效
标题翻译：磁共振成像系统
公开(公告)号：US5377679A
公开(公告)日：1995-01-03
申请号：US796924
申请日：1991-11-22
申请人： Yoshio Machida , Masahiko Hatanaka , Shinichi Kitane
发明人： Yoshio Machida , Masahiko Hatanaka , Shinichi Kitane
IPC分类号： G01R33/483 , G01R33/54 , A61B5/055
CPC分类号： G01R33/4835 , G01R33/4828
摘要： An MRI system includes static and gradient field generators for respectively generating static and gradient fields to be applied to an object, a radio-frequency (RF) field transmitter/receiver for transmitting and receiving an RF field, a sequence controller for applying the gradient field and the RF field to the object at a predetermined timing while the object is being applied with the static field, thereby causing a predetermined MR phenomenon, a signal processor for performing predetermined processing of MR signal data detected through the RF field transmitter/receiver to obtain an MR image, and a display for displaying the image obtained by the signal processor. The sequence controller comprises a multi-slice controller for executing a multi-slice method using a sequence with a relatively long echo time so that an MR signal of a proton of a fat is suppressed and an MR signal of a proton of a CSF is emphasized. The signal processor comprises a summation processor for synthesizing multi-slice images as a plurality of slice images by summation to obtain a synthesized image.
摘要翻译： MRI系统包括用于分别产生要应用于对象的静态和梯度场的静态和梯度场发生器，用于发送和接收RF场的射频（RF）场发射机/接收机，用于应用梯度场的序列控制器并且在物体被施加静电场的同时以预定的定时向对象发射RF场，从而导致预定的MR现象，信号处理器用于执行通过RF场发射机/接收机检测到的MR信号数据的预定处理以获得 MR图像和用于显示由信号处理器获得的图像的显示器。序列控制器包括多片控制器，用于使用具有相对长的回波时间的序列来执行多片方法，从而抑制脂肪的质子的MR信号并且强调CSF的质子的MR信号。信号处理器包括一个求和处理器，用于通过求和合成多片图像作为多个切片图像，以获得合成图像。

6. 发明授权

US5331279A Method and apparatus for imaging blood vessels employing magnetic resonance 失效
标题翻译：使用磁共振成像血管的方法和装置
公开(公告)号：US5331279A
公开(公告)日：1994-07-19
申请号：US109452
申请日：1993-08-19
申请人： Masahiko Hatanaka
发明人： Masahiko Hatanaka
IPC分类号： G01R33/54 , G01R33/563 , G01R33/20
CPC分类号： G01R33/563 , G01R33/4835
摘要： A magnetic resonance blood flow imaging method employs a field-echo technique and a gapless multi-slice acquisition technique in which a selective excitation pulse with a flip angle of less than 90 degrees is utilized and a pulse repetition time is set shorter than usual. Imaging data are acquired from multiple slices of a subject under examination while the multiple slices are shifted in sequence in position. A cross-sectional image is reconstructed for each of the multiple slices. Images obtained by performing subtractions on plural images for the same slice are gathered to thereby produce an image of blood vessels of the subject under examination which contain at least two blood vessels which run substantially in parallel and are opposite to each other in the direction of blood flow therein.
摘要翻译：磁共振血流成像方法采用场回波技术和无间隙多切片采集技术，其中使用具有小于90度的翻转角的选择性激励脉冲，并且将脉冲重复时间设置为比通常更短。从检查对象的多个片段获取成像数据，同时多个片段在位置上顺序移位。为每个多个切片重建横截面图像。收集通过对相同切片的多个图像进行减法而获得的图像，从而产生检查对象的血管图像，该图像包含至少两个基本平行且相对于血液方向相反的血管流入其中。

7. 发明授权

US5157214A Musical sound synthesizing apparatus 失效
标题翻译：音乐合成装置
公开(公告)号：US5157214A
公开(公告)日：1992-10-20
申请号：US505150
申请日：1990-04-05
申请人： Masahiro Nakanishi , Daisuke Mori , Mizuho Seki , Katsuyoshi Fujii , Masahiko Hatanaka
发明人： Masahiro Nakanishi , Daisuke Mori , Mizuho Seki , Katsuyoshi Fujii , Masahiko Hatanaka
IPC分类号： G10H5/00
CPC分类号： G10H5/007 , G10H2250/051 , G10H2250/445 , G10H2250/451 , G10H2250/521 , Y10S84/10 , Y10S84/26
摘要： A musical sound synthesizing apparatus which simulates a sound generating mechanism of a string instrument by using an electronic circuit comprises a driver for applying data, an adder, a delay unit for storing data temporarily, a low pass filter for processing data, and a word length designating unit for designating a word length (address width) of the delay unit. The adder, delay unit and low pass filter form a loop-shaped circuit, with their corresponding input ends and output ends connected with each other. The word length designating unit corrects a word length of the delay unit in accordance with a phase delay of the low pass filter or in accordance with the number of stages of the pipeline structure of the loop. In the case where a musical sound of the type generated by touching or hitting strings is synthesized, the driver reads at least two series of data stored beforehand and applies the read data to one of the inputs to the adder. While, in the case where a musical sound of the type generated by rubbing strings is synthesized, the driver applies, to one of the inputs to the adder, data calculated on the basis of at least two data read out from mutually different addresses in the delay unit and data (corresponding to the velocity of a bow) inputted thereto externally.
摘要翻译：一种通过使用电子电路模拟弦乐器的声音产生机构的音乐声音合成装置包括用于应用数据的驱动器，加法器，临时存储数据的延迟单元，用于处理数据的低通滤波器和字长指定单元，用于指定延迟单元的字长（地址宽度）。加法器，延迟单元和低通滤波器形成一个环形电路，其相应的输入端和输出端相互连接。字长指定单元根据低通滤波器的相位延迟或根据循环的流水线结构的级数来校正延迟单元的字长。在合成通过触摸或击打串产生的类型的音乐声音的情况下，驾驶员读取预先存储的至少两个系列的数据，并将读取的数据应用于加法器的一个输入。而在由摩擦弦产生的类型的音乐合成的情况下，驾驶员向加法器的一个输入端施加基于从相互不同的地址读出的至少两个数据计算出的数据延迟单元和数据（对应于弓的速度）。

8. 发明授权

US4601052A Voice analysis composing method 失效
标题翻译：语音分析组合方法
公开(公告)号：US4601052A
公开(公告)日：1986-07-15
申请号：US447899
申请日：1982-12-08
申请人： Hiroshi Saito , Kiyotaka Nagai , Daisuke Mori , Masahiko Hatanaka , Hideo Shibuya , Tomoaki Abe , Minoru Toyoda
发明人： Hiroshi Saito , Kiyotaka Nagai , Daisuke Mori , Masahiko Hatanaka , Hideo Shibuya , Tomoaki Abe , Minoru Toyoda
IPC分类号： G10L13/08 , G10L1/00
CPC分类号： G10L13/08
摘要： In a speech analysis and synthesis (composing) method, a phoneme transition waveform is generated to smoothly couple phoneme PHA to PHB having different pitch periods. The method involves obtaining the differential value (difference phoneme .DELTA.PH or difference phoneme .DELTA.PHI and difference clock or pitch period), and in composition merely adding phoneme PHA and difference phoneme .DELTA.PHI and clock period and difference clock period.
摘要翻译：在语音分析和合成（合成）方法中，产生音素转变波形以将音素PHA平滑地耦合到具有不同音调周期的PHB。该方法包括获得差分值（差分音素DELTA PH或差分音素DELTA PHI和差时钟或音调周期），并且在组成中仅添加音素PHA和差分音素DELTA PHI以及时钟周期和差时钟周期。

9. 发明授权

US4644473A Correction circuit for a static magnetic field of an NMR apparatus and NMR apparatus for utilizing the same 失效
标题翻译：用于NMR装置的静磁场的校正电路和利用其的NMR装置
公开(公告)号：US4644473A
公开(公告)日：1987-02-17
申请号：US603726
申请日：1984-04-25
申请人： Fumitoshi Kojima , Masahiko Hatanaka
发明人： Fumitoshi Kojima , Masahiko Hatanaka
IPC分类号： A61B10/00 , A61B5/055 , G01R33/24 , G01R33/385 , G01R33/389 , G01R33/565 , G01N27/00 , G01R33/08
CPC分类号： G01R33/24 , G01R33/389 , G01R33/56563
摘要： In the NMR apparatus the resonant conditions may be kept constant by adjusting the strength of the static magnetic field. The echo signal that is induced under the specific conditions is processed so as to obtain the deviation of the resonant frequency in the correction circuit. The shift of the given static magnetic field is calculated based upon the deviation of the resonant frequency. The DC energizing current for the H.sub.O power supply is varied based upon the magnetic field shift so as to maintain the NMR phenomenon at the desirable resonant conditions.
摘要翻译：在NMR装置中，通过调整静磁场的强度，可以使谐振条件保持恒定。处理在特定条件下感应的回波信号，以获得校正电路中的谐振频率的偏差。基于谐振频率的偏差计算给定静态磁场的偏移。用于HO电源的DC通电电流基于磁场偏移而变化，以将NMR现象保持在期望的谐振条件。

10. 发明授权

US07542616B2 Apparatus and method for compressing image data 失效
标题翻译：用于压缩图像数据的装置和方法
公开(公告)号：US07542616B2
公开(公告)日：2009-06-02
申请号：US10721389
申请日：2003-11-25
申请人： Masahiko Hatanaka , Hisayoshi Zenke , Shusuke Miyaji
发明人： Masahiko Hatanaka , Hisayoshi Zenke , Shusuke Miyaji
IPC分类号： G06K9/36
CPC分类号： H04N19/124 , H04N19/149 , H04N19/15 , H04N19/172 , H04N19/194 , H04N19/60
摘要： An image data compressing apparatus includes an image data compressor for compressing image data input thereto at first and second compression rates to produce first and second compressed data, respectively, an approximate-expression selector having an approximate-expression table including approximate expressions corresponding to sample data sizes, respectively, and a compression rate determining unit for determining the second compression rate. The approximate-expression selector selects an approximate expression from the approximate expressions. The first approximate expression corresponds to a first sample data size nearest a data size of the first compressed data among the sample data sizes. Each of the approximate expressions indicates a change of a data size in response to a compression rate. The compression rate determining unit determines the second compression rate based on the selected approximate expression. The image data compressing apparatus provides a desired size of the compressed image data by maximum two of the compressing operations.
摘要翻译：图像数据压缩装置包括图像数据压缩器，用于分别以第一和第二压缩率压缩输入到其中的图像数据，以分别产生第一和第二压缩数据;近似表达式选择器，具有包括与样本数据相对应的近似表达式的近似表达式表以及压缩率确定单元，用于确定第二压缩率。近似表达式选择器从近似表达式中选择近似表达式。第一近似表达式对应于样本数据大小中最接近第一压缩数据的数据大小的第一样本数据大小。每个近似表达式表示响应于压缩率的数据大小的改变。压缩率确定单元基于所选择的近似表达式来确定第二压缩率。图像数据压缩装置通过最多两个压缩操作来提供压缩图像数据的期望大小。

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