公开(公告)号：US20120235676A1

公开(公告)日：2012-09-20

申请号：US13414073

申请日：2012-03-07

申请人： Masao YUI ,  Hiroshi KUSAHARA

发明人： Masao YUI ,  Hiroshi KUSAHARA

IPC分类号： G01R33/24 ,  G01R33/32

CPC分类号： G01R33/56518 ,  G01R33/5616

摘要： According to one embodiment, a magnetic resonance imaging apparatus includes a data acquisition unit, an eddy magnetic field measuring unit and an imaging unit. The data acquisition unit is configured to acquire magnetic resonance signals at mutually different timings with applying a gradient magnetic field for generating an eddy magnetic field. The eddy magnetic field measuring unit is configured to acquire eddy magnetic field information including a time constant of the eddy magnetic field based on phase information of the magnetic resonance signals acquired at the timings. The imaging unit is configured to perform imaging under an imaging condition or a data processing condition according to the eddy magnetic field information.

摘要翻译： 根据一个实施例，磁共振成像装置包括数据采集单元，涡流磁场测量单元和成像单元。 数据采集​​单元被配置为通过施加用于产生涡流磁场的梯度磁场在相互不同的定时获取磁共振信号。 涡电磁场测量单元被配置为基于在该定时获取的磁共振信号的相位信息来获取包括涡流磁场的时间常数的涡流磁场信息。 成像单元被配置为根据涡流磁场信息在成像条件或数据处理条件下执行成像。

公开(公告)号：US20110038520A1

公开(公告)日：2011-02-17

申请号：US12854426

申请日：2010-08-11

申请人： Masao YUI

发明人： Masao YUI

IPC分类号： G06K9/00 ,  G01R33/48

CPC分类号： G01R33/5676 ,  G01R33/4835

摘要： In a magnetic resonance imaging apparatus according to the present embodiment, the sequence execution control unit alternately executes an imaging sequence of collecting data for generating a diagnostic image and a navigator sequence of collecting data for generating a navigator image that is an image for motion detection. The slice position detecting unit analyzes the navigator image generated from the data collected in the navigator sequence each time the navigator sequence is executed, and thereby detects the position of a mark indicating a slice excited by the imaging sequence executed prior to the navigator sequence. The respiratory motion estimating unit estimates the motion of a portion due to the subject's respiration, based on the detected position of the mark.

摘要翻译： 在根据本实施例的磁共振成像装置中，序列执行控制单元交替执行用于生成用于生成诊断图像的数据的收集数据和用于生成作为用于运动检测的图像的导航图像的收集数据的导航器序列的成像序列。 切片位置检测单元在每次执行导航器序列时分析从导航器序列中收集的数据生成的导航图像，从而检测指示由导航器序列之前执行的成像序列激发的切片的标记的位置。 呼吸运动估计单元基于检测到的标记位置估计由于受试者的呼吸引起的部分的运动。

公开(公告)号：US20130113486A1

公开(公告)日：2013-05-09

申请号：US13669703

申请日：2012-11-06

申请人： Naho IMAMURA ,  Masao YUI

发明人： Naho IMAMURA ,  Masao YUI

IPC分类号： G01R33/58 ,  G01R33/341

CPC分类号： G01R33/58 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/543 ,  G01R33/56383

摘要： In one embodiment, an MRI apparatus (20) includes a main scan executing unit for executing a main scan, an image reconstruction unit (90) for reconstructing image data based on MR signals acquired in the main scan, a calibration scan setting unit (100), a calibration scan executing unit, and a condition determining unit. The calibration scan setting unit calculates a condition of a calibration scan for determining “an imaging condition of the main scan” or “a condition of correction processing of the image data”, based on a type of an RF coil device and an imaging part. The calibration scan executing unit executes the calibration scan based on the condition of the calibration scan. The condition determining unit determines “the imaging condition of the main scan” or “the condition of the correction processing”, based on an execution result of the calibration scan.

摘要翻译： 在一个实施例中，MRI装置（20）包括用于执行主扫描的主扫描执行单元，用于基于在主扫描中获取的MR信号重建图像数据的图像重建单元（90），校准扫描设置单元 ），校准扫描执行单元和条件确定单元。 校准扫描设置单元基于RF线圈装置和成像部件的类型来计算用于确定“主扫描的成像条件”或“图像数据的校正处理的条件”的校准扫描的条件。 校准扫描执行单元根据校准扫描的条件执行校准扫描。 条件确定单元基于校准扫描的执行结果确定“主扫描的成像条件”或“校正处理的条件”。

公开(公告)号：US20090160440A1

公开(公告)日：2009-06-25

申请号：US12336708

申请日：2008-12-17

申请人： Masao YUI

发明人： Masao YUI

IPC分类号： G01R33/48

CPC分类号： G01R33/561 ,  G01R33/543 ,  G01R33/5614 ,  G01R33/56527 ,  G01R33/56563

摘要： A magnetic resonance imaging apparatus includes an input unit, a data acquisition unit and an image generating unit. The input unit inputs information indicating a matter of which resonance frequency is a center frequency of an excitation pulse. The data acquisition unit acquires magnetic resonance data with obtaining a steady state free precession. Each of the plural excitation pulses has a transmission phase varying by a variation amount determined based on a difference between a resonance frequency and the center frequency. The image generating unit generates an image of the desired matter based on the magnetic resonance data.

摘要翻译： 磁共振成像装置包括输入单元，数据获取单元和图像生成单元。 输入单元输入指示哪个共振频率是激励脉冲的中心频率的信息。 数据采集​​单元获得稳态自由进动的磁共振数据。 多个激励脉冲中的每一个具有根据谐振频率和中心频率之间的差确定的变化量而变化的发送相位。 图像生成单元基于磁共振数据生成所需物体的图像。

公开(公告)号：US20080238422A1

公开(公告)日：2008-10-02

申请号：US12076387

申请日：2008-03-18

申请人： Masao YUI

发明人： Masao YUI

IPC分类号： G01R33/54

CPC分类号： G01R33/5614 ,  G01R33/4824 ,  G01R33/4828 ,  G01R33/4835 ,  G01R33/5602 ,  G01R33/5607 ,  G01R33/5635 ,  G01R33/56366

摘要： A magnetic resonance imaging apparatus includes a data acquisition unit and an image data generating unit. The data acquisition unit acquires data according to a sequence derived by adding a coherent control pulse on a Steady-State Free Precession pulse sequence for repeating plural radio frequency excitations with a constant interval. The coherent control pulse has a center at a substantially center time between adjacent radio frequency excitations and a zero-order moment of which amount is zero. The image data generating unit generates image data based on the data.

摘要翻译： 磁共振成像设备包括数据获取单元和图像数据生成单元。 数据获取单元根据通过在稳态自由进动脉冲序列上添加相干控制脉冲导出的序列来获取数据，以用于以恒定间隔重复多个射频激励。 相干控制脉冲具有在相邻射频激励之间的基本中心时间的中心和零量的零阶矩。 图像数据生成单元基于该数据生成图像数据。

公开(公告)号：US20120313943A1

公开(公告)日：2012-12-13

申请号：US13490589

申请日：2012-06-07

申请人： Shinsuke TSUKAGOSHI ,  Go MUKUMOTO ,  Masao YUI ,  Tatsuo MAEDA ,  Akira ADACHI

发明人： Shinsuke TSUKAGOSHI ,  Go MUKUMOTO ,  Masao YUI ,  Tatsuo MAEDA ,  Akira ADACHI

IPC分类号： G06T17/00

CPC分类号： H04N13/279 ,  A61B5/055 ,  A61B6/022 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/466 ,  A61B6/468 ,  A61B6/484 ,  A61B6/501 ,  A61B6/5217 ,  A61B6/5223 ,  A61B6/5235 ,  A61B8/13 ,  A61B8/466 ,  A61B8/483 ,  A61B8/523 ,  G02B27/2264 ,  G06F19/00 ,  G06T19/00 ,  G06T2210/41 ,  H04N5/445

摘要： An image processing system according to an embodiment includes a first image creating unit, a second image creating unit, and a display controller. The first image creating unit creates a first image by performing a rendering processing on volume data which is three-dimensional medical image data. The second image creating unit creates a second image having a different stereoscopic effect from the first image by performing the rendering processing on the volume data. The display controller that controls to display the first image and the second image in a designated region that is designated in a display surface of a display unit and a background region other than the designated region, respectively.

摘要翻译： 根据实施例的图像处理系统包括第一图像创建单元，第二图像创建单元和显示控制器。 第一图像创建单元通过对作为三维医学图像数据的卷数据执行渲染处理来创建第一图像。 第二图像创建单元通过对卷数据执行渲染处理，从第一图像创建具有不同立体效果的第二图像。 所述显示控制器分别控制在所述指定区域中显示所述第一图像和所述第二图像，所述区域指定在所述显示单元的显示表面和所述指定区域以外的背景区域。

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。

公开(公告)号：US20090148021A1

公开(公告)日：2009-06-11

申请号：US12330949

申请日：2008-12-09

申请人： Masao YUI

发明人： Masao YUI

IPC分类号： G06T7/00 ,  G06T15/00

CPC分类号： G01R33/56308 ,  G01R33/56316

摘要： A magnetic resonance imaging apparatus includes a data acquisition unit, a correction unit, a sorting unit and n image reconstruction unit. The data acquires data for imaging and projection data. The correction unit performs motion correction of the data using the breath levels obtained based on the projection data. The data sorting unit sorts the data after the motion correction into a cardiac time phase order based on electrocardiographic information. The image reconstruction unit reconstructs three dimensional image data based on the sorted data after the motion correction.

摘要翻译： 磁共振成像装置包括数据获取单元，校正单元，分类单元和n图像重建单元。 数据获取成像和投影数据的数据。 校正单元使用基于投影数据获得的呼吸水平来执行数据的运动校正。 数据排序单元基于心电图信息将运动校正后的数据分类为心脏时间相位顺序。 图像重建单元基于运动校正后的排序数据来重构三维图像数据。