公开(公告)号：US20050122108A1

公开(公告)日：2005-06-09

申请号：US10950698

申请日：2004-09-28

申请人： Yasutake Yasuhara ,  Kazuya Okamoto ,  Masaaki Yamanaka ,  Manabu Ishii ,  Tsutomu Igarashi ,  Shigehide Kuhara

发明人： Yasutake Yasuhara ,  Kazuya Okamoto ,  Masaaki Yamanaka ,  Manabu Ishii ,  Tsutomu Igarashi ,  Shigehide Kuhara

IPC分类号： G01R33/341 ,  G01V3/00

CPC分类号： G01R33/341

摘要： A magnetic resonance imaging apparatus of the invention comprises a static magnetic field generation unit which generates a static magnetic field in a gantry, a gradient magnetic field generation unit which applies a gradient magnetic field to a object in the static magnetic field, a radio frequency coil which receives a magnetic resonance signal from the object to which the gradient magnetic field is applied, a contour detection unit which detects a contour of the object, a coil movement unit which moves the radio frequency coil on the basis of the detected contour while the radio frequency coil is placed near and far relative to the object, and an image generation unit which generates a magnetic resonance image on the basis of the received magnetic resonance signal.

摘要翻译： 本发明的磁共振成像装置包括在台架中产生静磁场的静磁场产生单元，向静磁场中的物体施加梯度磁场的梯度磁场产生单元，射频线圈 其接收来自施加有梯度磁场的物体的磁共振信号，检测物体的轮廓的轮廓检测单元，在无线电状态下基于检测到的轮廓移动射频线圈的线圈移动单元 频率线圈被放置在靠近物体的近处和远处;以及图像生成单元，其基于接收的磁共振信号产生磁共振图像。

公开(公告)号：US06566663B1

公开(公告)日：2003-05-20

申请号：US09788123

申请日：2001-02-16

申请人： Koichi Kamijo ,  Shinichi Kojima ,  Katsushi Nakano ,  Kazuya Okamoto

发明人： Koichi Kamijo ,  Shinichi Kojima ,  Katsushi Nakano ,  Kazuya Okamoto

IPC分类号： H01J37141

CPC分类号： H01J37/141 ,  H01J2237/3175

摘要： Charged-particle-beam (CPB) optical components (e.g., electromagnetic lenses and deflectors) are disclosed that exhibit very low to no image displacement or loss of focus accompanying changes in temperature of the optical components during use. An optical component includes a unit of ferrite (typically in a ferrite stack). The ferrite is configured to exhibit substantially no permeability change with a change in temperature relative to normal operating temperature, thereby maintaining image displacement caused by permeability changes to below a predetermined threshold. As the ferrite temperature T rises to T′, the saturation magnetic flux density Bs of the ferrite decreases while the initial permeability &mgr;i increases. Thus, the initial magnetization curves of the ferrite intersect at a particular magnetic field intensity H, which exhibits substantially no change from T to T′. With HAC being the particular magnetic field intensity, the ferrite is selected so that the magnetic field intensity acting on the ferrite during operation is near HAC.

摘要翻译： 公开了带电粒子束（CPB）的光学部件（例如，电磁透镜和偏转器），其在使用期间伴随着光学部件的温度变化而表现出非常低至无图像位移或失焦。 光学部件包括铁氧体单元（通常为铁氧体叠层）。 铁氧体被配置为相对于正常工作温度而基本上不显示温度变化的磁导率变化，从而将由磁导率引起的图像位移维持在低于预定阈值以下。 当铁氧体温度T上升到T'时，铁氧体的饱和磁通密度Bs降低，而初始磁导率μi增加。 因此，铁素体的初始磁化曲线在特定的磁场强度H处相交，其从T到T'基本上没有变化。 使用HAC作为特定的磁场强度，选择铁氧体，使得在操作期间作用在铁氧体上的磁场强度接近HAC。

公开(公告)号：US06194899B1

公开(公告)日：2001-02-27

申请号：US09251488

申请日：1999-02-17

申请人： Yasutoshi Ishihara ,  Masaaki Umeda ,  Hidehiro Watanabe ,  Kazuya Okamoto

发明人： Yasutoshi Ishihara ,  Masaaki Umeda ,  Hidehiro Watanabe ,  Kazuya Okamoto

IPC分类号： G01V300

CPC分类号： G01R33/4804

摘要： An absolute temperature measuring pulse sequence is executed and, subsequently, a relative temperature measuring pulse sequence is repeatedly executed. Since while a relative temperature can be measured from phase information, an absolute temperature requires frequency information, a time required in the relative temperature measuring pulse can be made shorter than that required in the absolute temperature measuring pulse sequence. Since the relative temperature reveals a temperature variation, if an absolute temperature at a given time is known, an absolute temperature at a subsequent time can be calculated from the relative temperature. Thus, a local internal temperature of the subject can be measured, with a shorter temporal resolution, with the use of the absolute temperature and relative temperature.

摘要翻译： 执行绝对温度测量脉冲序列，随后重复执行相对温度测量脉冲序列。 由于可以从相位信息测量相对温度，所以绝对温度需要频率信息，相对温度测量脉冲所需的时间可以比绝对温度测量脉冲序列要短。 由于相对温度显示温度变化，如果在给定时间内的绝对温度是已知的，则可以从相对温度计算随后时间的绝对温度。 因此，可以使用绝对温度和相对温度，以较短的时间分辨率来测量受试者的局部内部温度。

公开(公告)号：US5694936A

公开(公告)日：1997-12-09

申请号：US528263

申请日：1995-09-14

申请人： Katsuhiko Fujimoto ,  Yoshiharu Ishibashi ,  Mariko Shibata ,  Takuji Suzuki ,  Satoshi Aida ,  Shiroh Saitoh ,  Kazuya Okamoto

发明人： Katsuhiko Fujimoto ,  Yoshiharu Ishibashi ,  Mariko Shibata ,  Takuji Suzuki ,  Satoshi Aida ,  Shiroh Saitoh ,  Kazuya Okamoto

IPC分类号： A61B17/00 ,  A61B17/22 ,  A61N7/00 ,  A61N7/02

CPC分类号： A61N7/02 ,  A61B2017/00176 ,  A61B2017/22009 ,  A61N2007/0065 ,  A61N2007/0073

摘要： An ultrasonic diagnosis apparatus for raising tissue temperature for hypothermic treatments, including an ultrasonic source for generating an ultrasonic treatment wave and a driving means for driving the ultrasonic source such that a frequency of the ultrasonic treatment wave generated by the ultrasonic source changes with time. The frequency of the ultrasonic treatment wave is changed along the time axis. By this change in frequency, some bubbles formed by cavitation as a result of the ultrasonic treatment wave are divided, and some bubbles are collapsed and therefore eliminated. Side effect cavitation and spread of a thermal degeneration area is suppressed, and thermal degeneration can be accurately induced in a desired area, thereby realizing a reliable, safe ultrasonic thermotherapy. Since cavitation is positively suppressed, the total treatment period can be shortened because cavitation would otherwise interfere with and slow down the thermal degeneration process. Therefore, treatment throughput can be improved as compared with a case in which cavitation is left to naturally break and disappear.

摘要翻译： 一种用于提高低温治疗的组织温度的超声波诊断装置，包括用于产生超声波处理波的超声波源和用于驱动超声波源的驱动装置，使得由超声波源产生的超声波处理波的频率随时间而变化。 超声波处理波的频率沿时间轴变化。 通过这种频率变化，由于超声波处理波而产生的由空穴形成的一些气泡被分割，并且一些气泡被折叠并因此被消除。 抑制热变性区域的副作用空化和扩散，可以在期望的区域中精确地诱导热变性，从而实现可靠，安全的超声波热疗。 由于气穴被积极地抑制，所以总处理时间可以缩短，因为空化会妨碍和减慢热变性过程。 因此，与空穴自然断裂和消失的情况相比，能够提高处理量。

公开(公告)号：US09157977B2

公开(公告)日：2015-10-13

申请号：US12914027

申请日：2010-10-28

申请人： Yoshiharu Ohiwa ,  Kazuya Okamoto ,  Masaaki Umeda

发明人： Yoshiharu Ohiwa ,  Kazuya Okamoto ,  Masaaki Umeda

IPC分类号： G01R33/54 ,  G01R33/483

CPC分类号： G01R33/54 ,  G01R33/4833 ,  G01R33/543

摘要： According to one embodiment, a magnetic resonance imaging apparatus includes; an imaging area setting unit configured to set an imaging area for a patient according to an imaging condition; an excitation angle determination unit configured to collect magnetic resonance signals from the imaging area by a pre-scan and to determine, on the basis of the collected magnetic resonance signal, an optimal excitation angle of a radio-frequency magnetic field for use in an imaging scan; and an imaging unit configured to acquire imaging data by carrying out the imaging scan of the set imaging area for the patient applying the radio-frequency magnetic field with the determined optimal excitation angle.

摘要翻译： 根据一个实施例，一种磁共振成像装置包括： 成像区域设定单元，被配置为根据成像条件设置患者的成像区域; 励磁角确定单元，被配置为通过预扫描从成像区域收集磁共振信号，并且基于所收集的磁共振信号确定用于成像的射频磁场的最佳激发角度 扫描 以及成像单元，被配置为通过对所述设置的成像区域进行成像扫描来获取成像数据，所述成像区域对于施加具有所确定的最佳激发角的所述射频磁场的患者进行。

公开(公告)号：US09052367B2

公开(公告)日：2015-06-09

申请号：US12939372

申请日：2010-11-04

申请人： Koji Akita ,  Takahiro Sekiguchi ,  Kazuya Okamoto ,  Sojuro Kato

发明人： Koji Akita ,  Takahiro Sekiguchi ,  Kazuya Okamoto ,  Sojuro Kato

IPC分类号： G01R33/36

CPC分类号： G01R33/3607 ,  G01R33/3621 ,  G01R33/3692

摘要： According to one embodiment, an apparatus includes a control unit and a coil unit. The control unit generates a first clock signal, generates a data signal to indicate an operating condition, modulates the first clock signal by the data signal to obtain a modulated signal, generates a clock transmission signal including the modulated signal, and emits the clock transmission signal. The coil unit converts the clock transmission signal into an electric signal, detects the modulated signal from the clock transmission signal, generates a second clock signal synchronous with the first clock signal from the modulated signal, detects an MR signal generated in a subject, digitizes, synchronously with the second clock signal, the MR signal, detects the data signal from the detected modulated signal by using of the second clock signal, controls the operating condition of the coil unit to be the operating condition indicated by the data signal.

摘要翻译： 根据一个实施例，一种装置包括控制单元和线圈单元。 控制单元产生第一时钟信号，产生数据信号以指示操作状态，通过数据信号调制第一时钟信号以获得调制信号，产生包括调制信号的时钟传输信号，并发出时钟传输信号 。 线圈单元将时钟传输信号转换为电信号，从时钟发送信号检测调制信号，从调制信号产生与第一时钟信号同步的第二时钟信号，检测在被摄体中产生的MR信号， 与第二时钟信号同步，MR信号通过使用第二时钟信号从检测到的调制信号中检测数据信号，将线圈单元的工作状态控制为由数据信号指示的工作状态。

公开(公告)号：US08816688B2

公开(公告)日：2014-08-26

申请号：US13214348

申请日：2011-08-22

申请人： Kohei Adachi ,  Masatoshi Hanawa ,  Kazuya Okamoto

发明人： Kohei Adachi ,  Masatoshi Hanawa ,  Kazuya Okamoto

IPC分类号： G01V3/00

CPC分类号： G01R33/583 ,  G01R33/5659

摘要： A magnetic resonance imaging apparatus includes an imaging condition acquisition unit and an imaging unit. The imaging condition acquisition unit acquires at least one of optimum amplitude and optimum phase of a radio frequency transmission signal so as to reduce a deviation of data in at least one region of interest set in an object. The imaging unit acquires image data by imaging according to an imaging condition including at least one of optimum amplitude and optimum phase.

摘要翻译： 磁共振成像装置包括成像条件获取单元和成像单元。 成像条件获取单元获取射频发送信号的最佳幅度和最佳相位中的至少一个，以便减少在对象中设置的至少一个感兴趣区域中的数据的偏差。 成像单元根据包括最佳幅度和最佳相位中的至少一个的成像条件进行成像来获取图像数据。

公开(公告)号：US08655630B2

公开(公告)日：2014-02-18

申请号：US13201854

申请日：2010-02-16

申请人： Yoshiharu Iwata ,  Ryohei Satoh ,  Keiji Kudo ,  Atsushi Taya ,  Kazuya Okamoto ,  Hidenori Murata ,  Koichiro Atsumi ,  Eiji Arai ,  Eiji Morinaga

发明人： Yoshiharu Iwata ,  Ryohei Satoh ,  Keiji Kudo ,  Atsushi Taya ,  Kazuya Okamoto ,  Hidenori Murata ,  Koichiro Atsumi ,  Eiji Arai ,  Eiji Morinaga

IPC分类号： G06F17/50

CPC分类号： G06Q10/06 ,  G06Q10/0633

摘要： A design workflow construction apparatus is provided for supporting design of an object having a plurality of design elements. In constructing the design workflow, the apparatus uses input variables, design variables, and intermediate variables. The design workflow construction apparatus includes means for acquiring object design elements and means for determining an order of designing the object design elements. The apparatus also includes means for determining the important design variables.

摘要翻译： 提供了一种用于支持具有多个设计元素的对象的设计的设计工作流构建装置。 在构建设计工作流程中，设备使用输入变量，设计变量和中间变量。 设计工作流程构建装置包括用于获取对象设计元素的装置和用于确定设计对象设计元素的顺序的装置。 该装置还包括用于确定重要设计变量的装置。

公开(公告)号：US08174264B2

公开(公告)日：2012-05-08

申请号：US12492960

申请日：2009-06-26

申请人： Kohei Adachi ,  Kazuya Okamoto

发明人： Kohei Adachi ,  Kazuya Okamoto

IPC分类号： G01V3/00

CPC分类号： G01R33/3692

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07965083B2

公开(公告)日：2011-06-21

申请号：US12458214

申请日：2009-07-02

申请人： Kazuya Okamoto ,  Takahiro Ishihara

发明人： Kazuya Okamoto ,  Takahiro Ishihara

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/365

摘要： An array coil including at least three conductive elements arranged at predetermined intervals, each of the conductive elements being in the form of a loop, and a plurality of switches that enable the conductive elements to be connected together according to a plurality of connecting patterns.

摘要翻译： 一种阵列线圈，其包括以预定间隔布置的至少三个导电元件，每个导电元件为环形，以及多个开关，其使导电元件能够根据多个连接图案连接在一起。