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31. 发明申请

US20130049753A1 MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：磁共振成像装置
公开(公告)号：US20130049753A1
公开(公告)日：2013-02-28
申请号：US13642573
申请日：2011-04-20
申请人： Yo Taniguchi , Yoshitaka Bito , Tetsuhiko Takahashi , Takenori Murase
发明人： Yo Taniguchi , Yoshitaka Bito , Tetsuhiko Takahashi , Takenori Murase
IPC分类号： G01R33/56
CPC分类号： A61B5/055 , A61B5/0042 , A61B2576/026 , G01R33/5608 , G01R33/5613 , G06T5/009 , G06T2207/10088
摘要： The present invention provides an image processing technique which enables various contrast control, by quantitatively handling a degree of phase enhancement in a contrast control as a post-processing of the image reconstruction. A complex operation is performed on each pixel value of a complex image obtained by an MRI, thereby generating an image with desired contrast. Intensity is controlled by increasing or decreasing the argument of the pixel value of each pixel by a constant amount, and the degree of phase enhancement is controlled by multiplying the phase (argument) of each pixel by a constant.
摘要翻译：本发明提供一种图像处理技术，其能够通过定量地处理对比度控制中的相位增强程度来进行各种对比度控制，作为图像重构的后处理。对通过MRI获得的复合图像的每个像素值执行复杂操作，从而生成具有期望对比度的图像。通过将每个像素的像素值的自变量增加或减小恒定量来控制强度，并且通过将每个像素的相位（自变量）乘以常数来控制相位增强的程度。

32. 发明授权

US09476956B2 Magnetic resonance imaging apparatus with correction of magnetic field gradient waveform distortion 有权
标题翻译：具有校正磁场梯度波形失真的磁共振成像装置
公开(公告)号：US09476956B2
公开(公告)日：2016-10-25
申请号：US13984537
申请日：2012-01-19
申请人： Yo Taniguchi , Suguru Yokosawa , Yoshitaka Bito
发明人： Yo Taniguchi , Suguru Yokosawa , Yoshitaka Bito
IPC分类号： G01R33/56 , A61B5/055 , G01R33/565 , G01R33/561
CPC分类号： G01R33/56 , A61B5/055 , G01R33/5614 , G01R33/5616 , G01R33/56554 , G01R33/56572
摘要： In order to improve image quality, a technique for obtaining information for eliminating distortions of the k-space in the readout direction and the phase encoding direction caused by the waveform distortion of the gradient magnetic field pulse is provided. A pulse sequence for the main scan is used to repeatedly measure echoes with changing the time integral value of the dephasing pulse for the readout gradient magnetic field. In the above measurement, the phase encoding pulse is not made zero, but two-dimensional data are measured in the same manner as that of the main scan. By using the measured two-dimensional data, correction information for eliminating distortions of the k-space in the readout direction and the phase encoding direction caused by the waveform distortion of the gradient magnetic field pulse is calculated in each of the readout direction and the phase encoding direction.
摘要翻译：为了提高图像质量，提供了一种用于获得用于消除由梯度磁场脉冲的波形失真引起的读出方向和相位编码方向上的k空间的失真的信息的技术。用于主扫描的脉冲序列用于通过改变读出梯度磁场的去相位脉冲的时间积分值来重复测量回波。在上述测量中，相位编码脉冲不为零，而是以与主扫描相同的方式测量二维数据。通过使用所测量的二维数据，在每个读出方向和相位上计算用于消除由梯度磁场脉冲的波形失真引起的读出方向上的k空间的失真和相位编码方向的校正信息编码方向。

33. 发明授权

US08083679B1 Ultrasonic imaging apparatus 失效
标题翻译：超声波成像装置
公开(公告)号：US08083679B1
公开(公告)日：2011-12-27
申请号：US11572322
申请日：2005-07-20
申请人： Takashi Azuma , Shinichiro Umemura , Yo Taniguchi
发明人： Takashi Azuma , Shinichiro Umemura , Yo Taniguchi
IPC分类号： A61B8/14
CPC分类号： A61B8/0883 , A61B8/13 , G01S15/8984
摘要： An ultrasonic image capturing apparatus is disclosed for transmitting ultrasonic pulses from an ultrasonic probe in which elements are arranged two-dimensionally to a subject, receiving the ultrasonic pulses reflected by the subject, and displaying a slice image of the subject. A vector Doppler processor detects motion of the subject along the direction of an aperture of a receiving beam former, and a displacement detector detects motion of a focus region in the subject based on a result of computation of the vector Doppler processor. A scanning plate setting section determines an image capturing region by using ultrasonic waves by the displacement detector.
摘要翻译：公开了一种用于从超声波探头发射超声波脉冲的超声波图像捕获装置，其中元件被二维地布置到被摄体，接收被检体反射的超声波脉冲，并显示被检体的切片图像。矢量多普勒处理器根据接收束形成器的孔径的方向来检测被摄体的运动，位移检测器基于矢量多普勒处理器的计算结果来检测被摄体中的对焦区域的运动。扫描板设置部分通过使用位移检测器的超声波来确定图像捕获区域。

34. 发明申请

US20110112393A1 MAGNETIC RESONANCE IMAGING DEVICE 有权
标题翻译：磁共振成像装置
公开(公告)号：US20110112393A1
公开(公告)日：2011-05-12
申请号：US13054155
申请日：2009-07-22
申请人： Yo Taniguchi , Yoshitaka Bito , Shoichi Miyawaki , Hiroyuki Takeuchi , Suguru Yokosawa
发明人： Yo Taniguchi , Yoshitaka Bito , Shoichi Miyawaki , Hiroyuki Takeuchi , Suguru Yokosawa
IPC分类号： A61B5/055
CPC分类号： G01R33/56518 , A61B5/055 , A61B5/7257 , G01R33/5616 , G01R33/56341 , G01R33/56563
摘要： In the diffusion-weighted imaging, amounts of distortion and amounts of phase offset of k-space data due to a temporally changing magnetic field error induced by eddy currents and vibrations associated with application of a diffusion-weighted gradient magnetic field pulse are corrected with good precision to improve image quality. Characteristic data for correcting distortion of k-space data are calculated for every position in the slice direction as peak shifts of projections observed between the cases of applying and not applying an MPG pulse. As the characteristic data, amounts of distortion in the read-out direction and the phase encoding direction and phase offset amounts in a slice plane are calculated.
摘要翻译：在扩散加权成像中，由于由涡流引起的瞬时变化的磁场误差和与施加扩散加权梯度磁场脉冲相关的振动引起的k空间数据的失真量和相位偏移量被校正为良好精度提高图像质量。针对切片方向上的每个位置计算用于校正k空间数据的失真的特征数据，作为施加和不施加MPG脉冲的情况之间观察到的投影的峰值偏移。作为特征数据，计算读取方向上的失真量和切片平面中的相位编码方向和相位偏移量。

35. 发明授权

US07723987B2 Magnetic resonance imaging system 有权
标题翻译：磁共振成像系统
公开(公告)号：US07723987B2
公开(公告)日：2010-05-25
申请号：US12071896
申请日：2008-02-27
申请人： Yoshitaka Bito , Yo Taniguchi , Toru Shirai , Shinji Kurokawa
发明人： Yoshitaka Bito , Yo Taniguchi , Toru Shirai , Shinji Kurokawa
IPC分类号： G01V3/00
CPC分类号： G01R33/4833 , G01R33/4835 , G01R33/561
摘要： A magnetic resonance measurement technique is provided which shortens the measurement time while suppressing artifacts caused by body movement of a measuring object and enables high-speed imaging. An excitation pulse which excites a plurality of slice planes and an excitation pulse which excites slice planes perpendicular to the slice planes are applied and a plurality of substantially parallel linear crossing areas are simultaneously measured. Spatial information of a linear direction of the crossing areas is acquired by modulating a magnetic resonance signal from the crossing areas by a gradient magnetic field. A spatial information of a direction perpendicular to the linear direction is acquired by changing the position of the plane and an image is reconstructed.
摘要翻译：提供一种磁共振测量技术，其可以在抑制由测量对象的身体移动引起的伪像的同时缩短测量时间并且能够进行高速成像。激励激发多个切片平面的激励脉冲和激发与切片平面垂直的切片平面的激励脉冲，同时测量多个基本上平行的线性交叉区域。交叉区域的线性方向的空间信息是通过梯度磁场调制来自交叉区域的磁共振信号而得到的。通过改变平面的位置并且重建图像来获取垂直于线性方向的方向的空间信息。

36. 发明授权

US5382902A Method for eliminating motional artifacts in magnetic resonance imaging 失效
标题翻译：消除磁共振成像中运动伪影的方法
公开(公告)号：US5382902A
公开(公告)日：1995-01-17
申请号：US985645
申请日：1992-12-07
申请人： Yo Taniguchi , Etsuji Yamamoto
发明人： Yo Taniguchi , Etsuji Yamamoto
IPC分类号： A61B5/055 , G01R33/32 , G01R33/563 , G01R33/567 , G01V3/00
CPC分类号： G01R33/5676
摘要： A magnetic resonance imaging method for obtaining an image of an object laid in a space in which a static magnetic field is applied, so as to substantially eliminate motional artifacts. The method includes sequentially measuring a plurality of magnetic resonance views with a plurality of encodings by repeating a measurement sequence of exciting nuclear spins in said object, applying a phase-encoding field gradient along a first direction with programmed time integral to encode the excited spins, and detecting the encoded spins in the presence of a readout field gradient along a second direction to generate a magnetic resonance view so that measurements of magnetic resonance views with at least low-order encoding are obtained during the repetition of the measurement sequence. Thereafter respective magnetic resonance views are subjected to a first Fourier transformation so as to generate a plurality of projection views with a plurality of encodings forming a data matrix in a hybrid domain, displacements in respective projection views due to motion of the object are corrected using displacement information obtained from projection views with low-order encodings so as to generate a corrected data matrix in the hybrid domain, and the corrected data matrix is subjected to a second Fourier transformation so as to generate the image of the object.
摘要翻译：一种磁共振成像方法，用于获得放置在施加静磁场的空间中的物体的图像，以便基本上消除运动伪像。该方法包括通过重复所述物体中激发的核自旋的测量序列来顺序地测量具有多个编码的多个磁共振视图，沿着第一方向施加相位编码场梯度以编程的时间积分来编码激励的自旋，以及在沿着第二方向存在读出场梯度的情况下检测编码的旋转以产生磁共振视图，使得在重复测量序列期间获得具有至少低阶编码的磁共振视图的测量。然后对各磁共振视图进行第一傅里叶变换，以便在混合域中产生多个形成数据矩阵的编码的多个投影视图，由于对象的运动而在各个投影视图中的位移使用位移进行校正从具有低阶编码的投影视图获得的信息，以便在混合域中产生校正数据矩阵，并且对经校正的数据矩阵进行第二傅立叶变换，以便生成对象的图像。

37. 发明授权

US08614574B2 Nuclear magnetic resonance imaging apparatus 有权
标题翻译：核磁共振成像装置
公开(公告)号：US08614574B2
公开(公告)日：2013-12-24
申请号：US12993905
申请日：2009-05-22
申请人： Suguru Yokosawa , Yo Taniguchi , Yoshitaka Bito , Hiroyuki Itagaki
发明人： Suguru Yokosawa , Yo Taniguchi , Yoshitaka Bito , Hiroyuki Itagaki
IPC分类号： G01V3/00 , A61B5/05 , G01R33/48
CPC分类号： A61B5/055 , A61B5/7285 , A61B5/7289 , A61B5/7292 , G01R33/288 , G01R33/543 , G01R33/5614 , G01R33/56325 , G01R33/5635
摘要： A magnetic resonance imaging apparatus is provided, which is capable of reducing SAR while maintaining S/N ratio and image contrast in a GrE-type pulse sequence, regardless of whether a synchronous imaging is performed or not.The present invention controls a flip angle as to each measurement set 409 that is obtained by division according to the size of phase encoding and a body motion cycle of a subject in the GrE-type pulse sequence. In a set 501 which measures echoes with phase encoding having a minimum absolute value, the flip angle is maximized as to the RF pulse having a minimum phase encoding amount and at least one RF pulse irradiated immediately before. As for the other RF pulses, the flip angle varies within a range less than the maximum, irrespective of the non-imaging mode, the imaging mode, or the size of phase encoding.
摘要翻译：提供一种磁共振成像装置，其能够在保持GrE型脉冲序列中的S / N比和图像对比度的同时减小SAR，而不管是否执行同步成像。本发明通过根据GrE型脉冲序列中的对象的相位编码的大小和体动周期进行分割而获得的每个测量组409来控制翻转角。在测量具有最小绝对值的相位编码回波的组501中，对于具有最小相位编码量的RF脉冲和紧接着照射的至少一个RF脉冲，翻转角度最大化。对于其他RF脉冲，翻转角度在小于最大值的范围内变化，而与非成像模式，成像模式或相位编码的大小无关。

38. 发明授权

US08188739B2 Nuclear magnetic resonance imaging apparatus 有权
标题翻译：核磁共振成像装置
公开(公告)号：US08188739B2
公开(公告)日：2012-05-29
申请号：US12519197
申请日：2007-06-29
申请人： Toru Shirai , Yoshitaka Bito , Yo Taniguchi , Satoshi Hirata
发明人： Toru Shirai , Yoshitaka Bito , Yo Taniguchi , Satoshi Hirata
IPC分类号： G01V3/00
CPC分类号： G01R33/485 , G01R33/483 , G01R33/5602 , G01R33/5607
摘要： A method for obtaining the most appropriate amplitude of signal suppression pulse, which suppresses unnecessary signals from the substance not subjected to measurement, highly accurately, swiftly and stably, and an MRI apparatus that enables the optimization are provided.A pulse amplitude adjusting means equipped in the MRI apparatus acquires signals while changing the amplitude of signal suppression pulse and calculates signal absolute values and phase values, and computes reference signals, which are polarized signal absolute values, based on the changes in signal phase values. This reference signals are subjected to polynomial fitting. A value which makes this fitting curve is 0 or closes to 0 is set as the optimal pulse amplitude.
摘要翻译：提供了一种用于获得信号抑制脉冲的最适当振幅的方法，其能够高度准确，快速且稳定地抑制不被测量的物质的不必要的信号，并且提供能够进行优化的MRI装置。装备在MRI装置中的脉冲幅度调整装置在改变信号抑制脉冲的振幅的同时获取信号，并且计算信号绝对值和相位值，并且基于信号相位值的变化来计算作为极化信号绝对值的参考信号。该参考信号经过多项式拟合。使该拟合曲线为0或接近0的值被设定为最佳脉冲幅度。

39. 发明申请

US20120093385A1 MEDICAL IMAGING APPARATUS 有权
标题翻译：医学成像设备
公开(公告)号：US20120093385A1
公开(公告)日：2012-04-19
申请号：US13380201
申请日：2010-06-22
申请人： Suguru Yokosawa , Yo Taniguchi , Yoshitaka Bito
发明人： Suguru Yokosawa , Yo Taniguchi , Yoshitaka Bito
IPC分类号： G06K9/62
CPC分类号： A61B5/055 , A61B5/0037 , A61B5/0042 , A61B5/4528 , A61B5/4533 , A61B2576/026 , G01R33/4833 , G01R33/543 , G01R33/546
摘要： There is provided a technique for, in a medical imaging apparatus enabling imaging of an arbitrary plane in a three-dimensional space, enabling automatic calculation of a slice position and automatic calculation of an extracting slice in MPR, without prolonging examination time. Two-dimensional scout scan similar to that used for manual setting of a slice position is performed, and the obtained scout images are processed to calculate a recommended slice position. Algorithms for the processing and various image processing procedures used for the processing are stored beforehand for every type of imaging region and every type of examination.
摘要翻译：本发明提供一种技术，在能够对三维空间中的任意平面进行成像的医疗成像装置中，能够自动计算切片位置并自动计算MPR中的提取切片，而不延长检查时间。执行类似于用于手动设置切片位置的二维侦察扫描，并且对所获得的侦察图像进行处理以计算推荐切片位置。用于处理的算法和用于处理的各种图像处理程序预先存储在每种类型的成像区域和每种类型的检查中。

40. 发明授权

US5754047A Inspection method and apparatus using nuclear magnetic resonance 失效
标题翻译：使用核磁共振的检查方法和装置
公开(公告)号：US5754047A
公开(公告)日：1998-05-19
申请号：US778251
申请日：1997-01-08
申请人： Yukari Onodera , Etsuji Yamamoto , Hiroyuki Itagaki , Yo Taniguchi
发明人： Yukari Onodera , Etsuji Yamamoto , Hiroyuki Itagaki , Yo Taniguchi
IPC分类号： G01R33/3875 , G01R33/54 , G01V3/00
CPC分类号： G01R33/3875 , G01R33/4835
摘要： An inspection method by means of an inspection apparatus using nuclear magnetic resonance and having magnetic field generating apparatus for generating a static magnetic field, gradient magnetic fields and an RF magnetic field; magnetic field generating apparatus by means of additional shim coils, which vary homogeneity of the static magnetic field by varying current flowing therethrough; signal detecting apparatus for detecting nuclear magnetic resonance signals from an object to be inspected; an apparatus for processing signals detected by the signal detecting apparatus; and control apparatus for controlling currents flowing through the shim coils, which method using nuclear magnetic resonance comprises a step of storing shim currents corresponding to each of a plurality of slices, capable of improving homogeneity of the static magnetic field for each of the plurality of slices, and a step of switching over the shim currents to those corresponding to a relevant slice to be measured prior to measurements of nuclear magnetic resonance signals from the slice. This inspection method can be applied also to a case where measurements of other slices are effected in intervals of measurements of the relevant slice.
摘要翻译：使用核磁共振的检查装置的检查方法，具有用于产生静磁场的磁场产生装置，梯度磁场和RF磁场; 通过附加的垫片线圈产生磁场产生装置，其通过改变流过其中的电流来改变静态磁场的均匀性; 信号检测装置，用于检测来自被检体的核磁共振信号; 用于处理由信号检测装置检测的信号的装置; 以及用于控制流过所述垫片线圈的电流的控制装置，所述使用核磁共振的方法包括存储对应于多个片中的每一个的片状电流的步骤，能够提高所述多个片中的每一个的静态磁场的均匀性以及在来自切片的核磁共振信号的测量之前，将垫片电流切换到与要测量的相关切片相对应的片电流的步骤。这种检查方法也可以应用于其他切片的测量在相关切片的测量间隔中实现的情况。

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