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1. 发明授权

US08706191B2 Magnetic resonance imaging apparatus and magnetic resonance angiography method 有权
标题翻译：磁共振成像装置和磁共振血管造影法
公开(公告)号：US08706191B2
公开(公告)日：2014-04-22
申请号：US11667462
申请日：2006-10-03
申请人： Yoshio Machida
发明人： Yoshio Machida
IPC分类号： A61B5/05
CPC分类号： G01R33/56383 , A61B5/0555 , A61B5/7257 , G01R33/546 , G01R33/5601 , G01R33/5635
摘要： A magnetic resonance imaging apparatus acquires 3D data of a subject, extracts 2D data for ky=constant out of the 3D data concurrently with the collection of 3D data, Fourier-transforms in a z-axis direction the extracted 2D data for ky=constant and rearranges the same on a kx-z space concurrently with the collecting of 3D data, performs a one-dimensional Fourier transform on z-data completed in a kx direction and acquires a 2D image for real space concurrently with the collection of 3D data, and displays a 2D image on a monitor concurrently with the collection of 3D data. Meanwhile, the the 3D data in the z-axis direction is Fourier-transformed and rearranged on a kx-ky-z space, a two-dimensional Fourier transform is performed on the z-data completed in a kx/ky direction and a 3D image is acquired for real space.
摘要翻译：磁共振成像装置获取被摄体的3D数据，并与3D数据的采集同时提取3D数据中的ky =常数的2D数据，在z轴方向上傅立叶变换提取的用于ky =常数的2D数据，在收集3D数据的同时在kx-z空间上重新排列相同，对在kx方向上完成的z数据执行一维傅立叶变换，并与3D数据的采集同时获取用于真实空间的2D图像，以及与3D数据的收集同时在监视器上显示2D图像。同时，在z轴方向上的3D数据被傅里叶变换并在kx-ky-z空间上重新排列，对以kx / ky方向完成的z数据和3D图像进行二维傅立叶变换图像被实时获取。

2. 发明授权

US07205765B2 Parallel imaging based on expanded unfolding technique 有权
标题翻译：基于扩展展开技术的并行成像
公开(公告)号：US07205765B2
公开(公告)日：2007-04-17
申请号：US11210659
申请日：2005-08-25
申请人： Yoshio Machida , Nobuyasu Ichinose , Shinichi Uchizono
发明人： Yoshio Machida , Nobuyasu Ichinose , Shinichi Uchizono
IPC分类号： G01V3/00
CPC分类号： G01R33/5611
摘要： Parallel imaging is performed by a magnetic resonance imaging system provided with a multiple RF coil composed of plural element coils. As part of parallel imaging conditions, a desired imaging FOV and a reduction rate of data acquisition time for the parallel imaging are specified by an operator. An unfolding FOV to which an unfolding scale is assigned is specified. The unfolding scale is larger in value than the reduction rate, thus the unfolding FOV is larger in the size than the imaging FOV. Using an acquisition FOV specified based on the imaging FOV and the reduction rate, a scan for parallel imaging is performed and images are reconstructed corresponding to the respective element coils. The reconstructed images are unfolded into an unfolding-FOV image at the unfolding scale. An image having the imaging FOV is cut out, as a desired final image, from the unfolded image.
摘要翻译：并行成像由具有由多个元件线圈构成的多个RF线圈的磁共振成像系统进行。作为并行成像条件的一部分，操作者指定并行成像的期望成像FOV和数据采集时间的缩小率。指定展开刻度的展开FOV。展开尺度的值比减小率大，因此展开的FOV在尺寸上比成像FOV大。使用基于成像FOV指定的采集FOV和缩小率，执行对并行成像的扫描，并且对应于各个元件线圈重建图像。重建的图像在展开的尺度上展开成展开的FOV图像。具有成像FOV的图像作为期望的最终图像从展开的图像切出。

3. 发明申请

US20060184004A1 Magnetic resonance imaging for a plurality of selective regions set to object continuously moved 有权
标题翻译：用于连续移动的多个选择区域的磁共振成像
公开(公告)号：US20060184004A1
公开(公告)日：2006-08-17
申请号：US11341536
申请日：2006-01-30
申请人： Yoshio Machida
发明人： Yoshio Machida
IPC分类号： A61B5/05
CPC分类号： G01R33/4833 , A61B5/055 , A61B6/469 , A61B6/541 , G01R33/4835 , G01R33/563 , G01R33/56509
摘要： MRI echo data is acquired by performing selective-excitation on regions composed of multi-slices of an object, while the object is moved continuously. The positions of the multi-slices are moved within a predetermined imaging range fixedly determined by an MRI system, according to object movement. This allows positions of the multi-slices to be changed in compliance with the moved object, so that the multi-slices positionally track with the object within the imaging range. Accordingly, a multi-slice imaging technique can be provided, which is executable during even continuous movement of the object.
摘要翻译：在物体连续移动的同时，对由多个物体的多个部分组成的区域进行选择性激发来获取MRI回波数据。根据物体运动，多片的位置在由MRI系统固定地确定的预定成像范围内移动。这允许根据移动的对象改变多片的位置，使得多片与成像范围内的对象进行位置跟踪。因此，可以提供可在对象的连续移动期间执行的多切片成像技术。

4. 发明申请

US20060087320A1 Parallel MR imaging with use of multi-coil made of plural element coils 有权
公开(公告)号：US20060087320A1
公开(公告)日：2006-04-27
申请号：US11250490
申请日：2005-10-17
申请人： Yoshio Machida , Yoshinori Hamamura , Yoshimori Kassai , Kazuya Okamoto , Kazuhiro Soma
发明人： Yoshio Machida , Yoshinori Hamamura , Yoshimori Kassai , Kazuya Okamoto , Kazuhiro Soma
IPC分类号： G01V3/00
CPC分类号： G01R33/3664 , G01R33/3415 , G01R33/5611
摘要： A magnetic resonance imaging system includes an MR signal reception apparatus comprising a receiving multi-coil and a switchover member. The receiving multi-coil receives MR signals and is composed of a plurality of element coils. The switchover member is configured to switch reception states of the MR signals received by the plurality of element coils in response to imaging conditions. The switchover member connects output paths of the MR signals from the plurality of element coils to a receiver, to reception channels in the receiver in response to the imaging conditions. The reception channels is less in number than the element coils. The imaging conditions are for example directed to parallel MR imaging.

5. 发明申请

US20060064004A1 Magnetic resonance imaging apparatus and magnetic resonance imaging method 有权
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US20060064004A1
公开(公告)日：2006-03-23
申请号：US11226324
申请日：2005-09-15
申请人： Yoshio Machida
发明人： Yoshio Machida
IPC分类号： A61B5/05
CPC分类号： A61B5/055 , G01R33/4828 , G01R33/5605 , G01R33/5607 , G01R33/563 , G01R33/5635
摘要： A magnetic resonance imaging apparatus comprising an imaging condition setting unit, a gradient coil, a radio frequency coil, a data acquisition unit, an image reconstructing unit and an image data generating unit. The imaging condition setting unit sets a first imaging condition and a second imaging condition at least. The data acquisition unit acquires first magnetic resonance signal data corresponding to the first imaging condition and second magnetic resonance signal data corresponding to the second imaging condition. The image reconstructing unit reconstructs first three dimensional image data in accordance with the first magnetic resonance signal data and second three dimensional image data in accordance with the second magnetic resonance signal data. The image data generating unit combines the first three dimensional image data and the second three dimensional image data to generate third three dimensional image data.
摘要翻译：一种磁共振成像设备，包括成像条件设置单元，梯度线圈，射频线圈，数据获取单元，图像重建单元和图像数据生成单元。成像条件设置单元至少设置第一成像条件和第二成像条件。数据获取单元获取与第一成像条件相对应的第一磁共振信号数据和与第二成像条件对应的第二磁共振信号数据。图像重建单元根据第二磁共振信号数据根据第一磁共振信号数据和第二三维图像数据重构第一三维图像数据。图像数据生成单元组合第一三维图像数据和第二三维图像数据，以生成第三三维图像数据。

6. 发明授权

US5084818A Method and system for Fourier transforming 3 dimensional MR data in predetermined position of interest by using phase-correction in MRI 失效
标题翻译：通过MRI中的相位校正对感兴趣的预定位置的三维MR数据进行傅里叶变换的方法和系统
公开(公告)号：US5084818A
公开(公告)日：1992-01-28
申请号：US361159
申请日：1989-06-05
申请人： Yoshio Machida
发明人： Yoshio Machida
IPC分类号： A61B5/055 , A61B10/00 , G01R33/32 , G01R33/54
CPC分类号： G01R33/4833 , G01R33/4822
摘要： In an MRI system, a region including a portion of interest is selectively excited in a predetermined pulse sequence to acquire 3 dimensional MR data. When the portion of interest is shifted from the center position of imaging, i.e., the center position of a gradient field, the 3 dimensional MR data is phase-corrected in accordance with the shift. The phase-corrected 3 dimensional MR data is 3-dimensional Fourier-transformed to obtain an MR image of a predetermined slice portion.
摘要翻译：在MRI系统中，包含感兴趣部分的区域被选择性地以预定脉冲序列激发，以获得三维MR数据。当感兴趣的部分从成像的中心位置（即梯度场的中心位置）移位时，根据该移位对3维MR数据进行相位校正。对相位校正后的3维MR数据进行3维傅里叶变换，得到预定切片部的MR图像。

7. 发明授权

US4878499A Magnetic resonance imaging system 失效
标题翻译：磁共振成像系统
公开(公告)号：US4878499A
公开(公告)日：1989-11-07
申请号：US256110
申请日：1988-10-11
申请人： Hirokazu Suzuki , Yoshio Machida , Yuji Yuasa
发明人： Hirokazu Suzuki , Yoshio Machida , Yuji Yuasa
IPC分类号： A61B10/00 , A61B5/055 , G01R33/28 , G01R33/48 , G01R33/54 , G01R33/567
CPC分类号： G01R33/5673 , G01R33/283 , G01R33/546
摘要： In a magnetic resonance imaging system of this invention, a static magnetic field is applied to a patient, and a gradient magnetic field and an excitation pulse signal are applied to the patient in accordance with a predetermined pulse sequence, so as to cause a magnetic resonance phenomenon in a selected slice of the patient. The magnetic resonance data of the magnetic resonance phenomenon is acquired, and the magnetic resonance image is obtained from the magnetic resonance data. The system has an announcement section for intermittently urging the patient to stop a body movement. In this system, a data acquisition section is operated under the control of a control section only while the patient stands still in response to the announcement of the announcement section, thereby intermittently acquiring magnetic resonance data in units of a predetermined volume.
摘要翻译：在本发明的磁共振成像系统中，对患者施加静磁场，并且根据预定脉冲序列向患者施加梯度磁场和激励脉冲信号，以产生磁共振在患者的选定切片中的现象。获得磁共振现象的磁共振数据，并从磁共振数据获得磁共振图像。该系统具有间歇地促使患者停止身体运动的通知部分。在该系统中，数据采集部分仅在控制部分的控制下操作，同时响应于通知部分的通知，病人静止，从而间歇地以预定量为单位获取磁共振数据。

8. 发明授权

US4740750A Reception signal processing apparatus in nuclear magnetic resonance diagnostic apparatus 失效
标题翻译：核磁共振诊断装置中的接收信号处理装置
公开(公告)号：US4740750A
公开(公告)日：1988-04-26
申请号：US827675
申请日：1986-02-10
申请人： Yoshio Machida
发明人： Yoshio Machida
IPC分类号： G01R33/34 , A61B5/055 , A61B10/00 , G01N24/08 , G01R33/32 , G01R33/36 , G01R33/56 , G06T1/00 , G01R33/20
CPC分类号： G01R33/3621 , G01R33/5608
摘要： Reception signal processing apparatus in nuclear magnetic resonance diagnostic apparatus to display as an image the distribution of the spin density or relaxation time of specific atomic nuclei existing in an object utilizing nuclear magnetic resonance phenomena including a phase demodulator for phase demodulating a nuclear magnetic resonance signal evoked by nuclear magnetic resonance phenomena in accordance with two reference waves, the phases of which are different by 90.degree., an analog-to-digital convertor for digitalizing the separated two signals obtained by the phase demodulator, and a noise correction processor for eliminating the low frequency component noises included in the demodulated signals from the phase demodulator to obtain an image without artifacts.
摘要翻译：核磁共振诊断装置中的接收信号处理装置，使用包含用于相位解调产生核磁共振信号的相位解调器的核磁共振现象显示作为图像的存在于物体中的特定原子核的自旋密度或弛豫时间的分布通过根据两相参考波的核磁共振现象，它们的相位相差90°，用于对由相位解调器获得的分离的两个信号进行数字化的模拟 - 数字转换器，以及用于消除低电平的噪声校正处理器来自相位解调器的解调信号中包含的频率分量噪声，以获得没有伪像的图像。

9. 发明授权

US4709211A Nuclear magnetic resonance system 失效
标题翻译：核磁共振系统
公开(公告)号：US4709211A
公开(公告)日：1987-11-24
申请号：US884504
申请日：1986-07-11
申请人： Yoshio Machida , Takao Kasugai
发明人： Yoshio Machida , Takao Kasugai
IPC分类号： A61B10/00 , A61B5/055 , G01R33/48 , G01R33/565 , G01R33/20
CPC分类号： G01R33/56518
摘要： A Fourier transformation imaging technique is used for NMR imaging. Spins in a selected plane are excited by selective RF pulses and an associated G.sub.z gradient and the selected spins are subjected to three mutually orthogonal gradients which provide the resonance signal with spatial resolution along each axis produced by phase encoding. The signals sampled and read out in the presence of a readout gradient are associated with spatial frequencies determined by the applied gradient fields. The Fourier transformation of the spin-echo signals obtained from repetition of the pulse sequences gives a two-dimensional image. The linear phase-encoding gradient is applied starting with a preliminary phase-encoding gradient which maximizes the spin-echo signals.
摘要翻译：傅里叶变换成像技术用于NMR成像。所选平面中的自旋由选择性RF脉冲和相关联的Gz梯度激发，并且所选择的自旋经受三个相互正交的梯度，其提供具有沿着由相位编码产生的每个轴的空间分辨率的谐振信号。在存在读出梯度的情况下采样和读出的信号与由应用的梯度场确定的空间频率相关联。从重复脉冲序列获得的自旋回波信号的傅里叶变换得到二维图像。从初始相位编码梯度开始施加线性相位编码梯度，其使自旋回波信号最大化。

10. 发明申请

US20090253984A1 MEDICAL IMAGING METHOD AND MEDICAL IMAGING SYSTEM 审中-公开
标题翻译：医学成像方法和医学成像系统
公开(公告)号：US20090253984A1
公开(公告)日：2009-10-08
申请号：US12412897
申请日：2009-03-27
申请人： Masao YUI , Junichi Makita , Yoshio Machida
发明人： Masao YUI , Junichi Makita , Yoshio Machida
IPC分类号： A61B5/055
CPC分类号： A61B5/055 , A61B5/417 , A61B5/7285 , A61B6/541 , G01R33/5601 , G01R33/5608 , G01R33/56308 , G01R33/5635
摘要： In a medical imaging method of taking a tomographic image of a sample into which a contrast medium is injected by the use of a medical imaging system, a monitoring operation is performed on the sample into which the contrast medium is injected and then an imaging scan for reconstructing the tomographic image is performed. The monitoring operation is to repeat the steps of: (1) performing a monitoring scan for collecting data representing a concentration distribution of the contrast medium in a monitoring region of the sample, (2) reconstructing a reconstructed image representing the concentration distribution of the contrast medium in the monitoring region from the data acquired by the monitoring scan, (3) calculating a maximum signal value from a reconstructed image newly reconstructed and the reconstructed image previously reconstructed every pixel and generating a monitoring image including the maximum signal value calculated every pixel whenever the reconstructed image is newly reconstructed, and (4) monitoring whether a start time of the imaging scan comes in, until the start time comes in.
摘要翻译：在通过使用医学成像系统拍摄造影剂注射的样品的断层图像的医学成像方法中，对投射有造影剂的样品进行监视操作，然后对成像扫描进行成像扫描重建断层图像被执行。监视操作是重复以下步骤：（1）执行监视扫描，以收集表示样本的监视区域中的造影剂的浓度分布的数据，（2）重建表示对比度的浓度分布的重建图像从监测扫描获取的数据中监测监测区域的介质，（3）从新重建的重构图像和每个像素预先重构的重构图像计算最大信号值，并产生包括每个像素计算的最大信号值的监测图像重新构建重建图像，并且（4）监视成像扫描的开始时间是否进入，直到开始时间到来。

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