公开(公告)号：EP2521925A1

公开(公告)日：2012-11-14

申请号：EP10790572.1

申请日：2010-12-16

申请人： Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.

发明人： SIEGERT, Thomas ,  SCHULZ, Jessica ,  TURNER, Robert ,  REIMER, Enrico

IPC分类号： G01R33/567 ,  G01R33/565

CPC分类号： G01R33/56509 ,  G01R33/5673

摘要： The invention relates to a method for compensating patient movements in MRI scans in real time and to a device suitable for carrying out said method. The method involves the following steps: optically sensing a marking element (5) connected to a patient (3) by means of an image sensor module (7) of an MRI-compatible camera (2) which is positioned inside an MRI device; transferring the image data detected by the image sensor module (7) to a micro-controller module (11) which is integrated in the MRI-compatible camera (2); calculating position data of the marking element (5) in the micro-controller module (11); and transmitting the position data to an external analyzing unit or to the MRI device in real time.

公开(公告)号：EP2499508A1

公开(公告)日：2012-09-19

申请号：EP10805822.3

申请日：2010-11-10

申请人： Insightec Ltd

发明人： LEVY, Yoav ,  HANANEL, Arik ,  FREUNDLICH, David ,  HALEVY, Gilad ,  ASSIF, Benny ,  ZISO, Hadas

IPC分类号： G01R33/48

CPC分类号： G01R33/4804 ,  A61B5/055 ,  G01R33/4814 ,  G01R33/56509 ,  G01R33/56536

摘要： Techniques for correcting measurement artifacts in MR thermometry predict or anticipate movements of objects (e.g. a thermal treatment device) and/or movements of the patient (e.g. respiratory motion) in or near an MR imaging region that may potentially affect a phase background and then acquire a library of reference phase images corresponding to different phase backgrounds that result from the predicted movements. For each phase image subsequently acquired, one reference phase image is selected from the library of reference phase images to serve as the baseline image for temperature measurement purposes. To avoid measurement artifacts that arise from phase wrapping, the phase shift associated with each phase image is calculated incrementally, that is, by accumulating phase increments from each pair of consecutively scanned phase images.

公开(公告)号：EP1825808B1

公开(公告)日：2012-09-19

申请号：EP05727413.6

申请日：2005-03-30

申请人： Keio University

发明人： OSHIO, Koichi

IPC分类号： A61B5/055 ,  G01R33/567 ,  G01R33/563 ,  G01R33/565

CPC分类号： G01R33/5676 ,  G01R33/4822 ,  G01R33/4824 ,  G01R33/4835 ,  G01R33/5614 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/5673

公开(公告)号：EP2392936A1

公开(公告)日：2011-12-07

申请号：EP11176447.8

申请日：2007-09-12

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

发明人： Ikedo, Masato ,  Kimura, Tokunori

IPC分类号： G01R33/563 ,  G01R33/565

CPC分类号： G01R33/56316 ,  G01R33/543 ,  G01R33/5602 ,  G01R33/5607 ,  G01R33/5611 ,  G01R33/5615 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/56545

摘要： A magnetic resonance imaging diagnostic apparatus for flow-sensitive susceptibility-weighted MRI includes a generating unit (6,7) which generates a slice gradient magnetic field, a phase-encode gradient magnetic field and a read-out gradient magnetic field that extend in a slice axis, a phase-encode axis and a read-out axis, respectively, a setting unit (16) which sets a dephase amount for weighting a signal-level decrease resulting from flows in the arteries and veins present in a region of interest of a subject (200), with respect to at least one axis selected form the slice axis, phase-encode axis and read-out axes, and a control unit (10,16) which controls the generating unit (6,7) by using a pulse sequence for a gradient echo system, which includes a dephase gradient-magnetic-field pulse that corresponds to the dephase amount set by the setting unit (16) for the at least one axis.

摘要翻译： 用于流敏敏感度加权MRI的磁共振成像诊断装置包括生成单元（6,7），其生成切片梯度磁场，相位编码梯度磁场和读出梯度磁场，其在 切片轴，相位编码轴和读出轴;设定单元（16），其设定用于对存在于感兴趣区域中的动脉和静脉中的流动导致的信号级别降低进行加权的去相位值 主题（200），相对于从切片轴选择的至少一个轴，相位编码轴和读出轴，以及控制单元（10,16），其通过使用 用于梯度回波系统的脉冲序列，其包括对应于由所述设置单元（16）为所述至少一个轴设置的去相位量的去相位梯度 - 磁场脉冲。

公开(公告)号：EP2269084A1

公开(公告)日：2011-01-05

申请号：EP09732457.8

申请日：2009-04-14

申请人： Koninklijke Philips Electronics N.V.

发明人： OGINO, Tetsuo

IPC分类号： G01R33/54 ,  G01R33/565 ,  G01R33/567

CPC分类号： G01R33/5676 ,  G01R33/4835 ,  G01R33/56509

摘要： A magnetic resonance imaging apparatus comprises a data acquisition system with motion compensation means for acquiring an image data set in respect of a moving object within an imaging region, the image data set comprising a plurality of acquisitions each in respect of one or more slice planes. Further there are means for averaging, on a slice- by-slice basis, said plurality of acquisitions to generate a single, average image set of said moving object. Also means are provided for calculating the actual scan location of all of said slice planes from all of said acquisitions, means for averaging a selected set of slice planes to generate a single, average image set of a static object within said imaging region. This averaging results in a high image quality in respect of the moving object (12) because for the static object, slice locations change for each acquisition.

公开(公告)号：EP2249171A1

公开(公告)日：2010-11-10

申请号：EP10174318.5

申请日：2006-09-22

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

发明人： Miyazaki, Mitsue ,  Kanazawa, Hitoshi

IPC分类号： G01R33/563 ,  G01R33/567 ,  G01R33/565

CPC分类号： G01R33/5635 ,  G01R33/543 ,  G01R33/5608 ,  G01R33/5617 ,  G01R33/56316 ,  G01R33/56509 ,  G01R33/5673

摘要： A magnetic resonance imaging apparatus includes a blood flow velocity acquiring unit that acquires a flow velocity of the blood flow of an object, a capturing condition setting unit that, on the basis of the flow velocity of the blood flow acquired by the blood flow velocity acquiring unit, sets at least one of a transmitting phase of a transmitted exciting pulse, a transmitting phase of a refocusing pulse, a shift amount of the relative phase difference between the transmitted exciting phase and the refocusing pulse, and an intensity of a gradient pulse in a readout direction as a capturing condition, and a blood flow image capturing unit that creates a blood flow image of the object by performing an imaging scan on the basis of the capturing condition set by the capturing condition setting unit.

摘要翻译： 本发明提供一种磁共振成像装置，其具备：血流速度取得部，其取得被检体的血流的流速;摄像条件设定部，其基于由血流速度取得部所取得的血流的流速 单元，设置发射的激励脉冲的发射相位，重聚焦脉冲的发射相位，发射的激发相位和重聚焦脉冲之间的相对相位差的偏移量以及梯度脉冲的强度中的至少一个 作为拍摄条件的读出方向;以及血流图像拍摄单元，其基于由拍摄条件设定单元设定的拍摄条件进行成像扫描，从而生成被拍摄体的血流图像。

公开(公告)号：EP1901082A3

公开(公告)日：2010-01-06

申请号：EP07017886.8

申请日：2007-09-12

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

发明人： Ikedo, Masato ,  Kimura, Tokunori

IPC分类号： G01R33/563 ,  G01R33/565

CPC分类号： G01R33/56316 ,  G01R33/543 ,  G01R33/5602 ,  G01R33/5607 ,  G01R33/5611 ,  G01R33/5615 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/56545

摘要： A magnetic resonance imaging diagnostic apparatus (100) includes a generating unit (6,7) which generates a slice gradient magnetic field, a phase-encode gradient magnetic field and a read-out gradient magnetic field that extend in a slice axis, a phase-encode axis and a read-out axis, respectively, a setting unit (16) which sets a dephase amount for weighting a signal-level decrease resulting from flows in the arteries and veins present in a region of interest of a subject (200), with respect to at least one axis selected form the slice axis, phase-encode axis and read-out axes, and a control unit (10,16) which controls the generating unit (6,7) by using a pulse sequence for a gradient echo system, which includes a dephase gradient-magnetic-field pulse that corresponds to the dephase amount set by the setting unit (16) for the at least one axis.
The apparatus may be used for flow imaging, susceptibility-weighted imagning and in the context of black blood preparation, gradient moment nulling and parallel MRI.

公开(公告)号：EP1371328A4

公开(公告)日：2009-11-25

申请号：EP02705186

申请日：2002-03-14

申请人： HITACHI MEDICAL CORP

发明人： TSUDA MUNETAKA ,  YOSHINO HITOSHI ,  TAKEUCHI HIROYUKI ,  MIYAWAKI SHOUICHI

IPC分类号： G01R33/389 ,  A61B5/055 ,  G01R33/3815

CPC分类号： G01R33/3873 ,  G01R33/3815 ,  G01R33/389 ,  G01R33/56509

公开(公告)号：EP1825808A4

公开(公告)日：2009-11-11

申请号：EP05727413

申请日：2005-03-30

申请人： UNIV KEIO

发明人： OSHIO KOICHI

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/28 ,  G01R33/54 ,  G01R33/563 ,  G01R33/565 ,  G01R33/567

CPC分类号： G01R33/5676 ,  G01R33/4822 ,  G01R33/4824 ,  G01R33/4835 ,  G01R33/5614 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/5673

公开(公告)号：EP2095147A1

公开(公告)日：2009-09-02

申请号：EP07859376.1

申请日：2007-12-13

申请人： Koninklijke Philips Electronics N.V.

发明人： HARVEY, Paul R.

IPC分类号： G01R33/567 ,  G01R33/565

CPC分类号： G01R33/56509 ,  G01R33/481

摘要： A diagnostic imaging arrangement comprises a magnetic resonance examination (1) system to acquire magnetic resonance signals and an emission tomography system (2) to acquire nuclear decay signals. An analysis module (4) is provided to derive motion correction(s) from the magnetic resonance signals. A reconstruction module (5) reconstructs a motion corrected emission tomographic image from the nuclear decay signals on the basis of the motion correction. Also a therapeutic arrangement is disclosed with a diagnostic imaging arrangement and a therapy module, with a system controller is further coupled to the therapy module and has the function to control the therapy module on the basis of image information generated by the diagnostic imaging system.