公开(公告)号：US10074197B2

公开(公告)日：2018-09-11

申请号：US14842111

申请日：2015-09-01

申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION

发明人： Shuhei Nitta ,  Taichiro Shiodera ,  Tomoyuki Takeguchi ,  Hidenori Takeshima ,  Toshiyuki Ono ,  Takashi Ida ,  Hiroaki Nakai

IPC分类号： A61B6/03 ,  G06T11/00 ,  G01N23/046 ,  A61B6/00 ,  G01N23/087

CPC分类号： G06T11/005 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/481 ,  A61B6/482 ,  A61B6/5205 ,  G01N23/046 ,  G01N23/087 ,  G06T2211/408

摘要： An X-ray computed-tomography (CT) apparatus of an embodiment includes an X-ray tube, an X-ray detector, and processing circuitry. The X-ray tube is configured to generate an X-ray. The X-ray detector includes a plurality of X-ray detection elements configured to output a signal based on the X-ray entered therein. The processing circuitry is configured to derive a constraint condition by using at least one piece of projection data out of a plurality of pieces of projection data corresponding energy bins of which differ at least partially, calculate an effective length that is a total length for which the X-ray has passed through a region in which a material to be decomposed is present, and generate image data showing information about the material by using the projection data and the effective length.

公开(公告)号：US10955505B2

公开(公告)日：2021-03-23

申请号：US15351886

申请日：2016-11-15

申请人： Toshiba Medical Systems Corporation

发明人： Kanako Saito ,  Hidenori Takeshima

IPC分类号： G01R33/561 ,  G01R33/563 ,  G01R33/56 ,  G01R33/48

摘要： A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry and processing circuitry. The sequence controlling circuitry is configured to acquire k-space data by executing a pulse sequence while performing undersampling. The processing circuitry is configured to generate an output target image by generating a folded image by applying a Fourier transform to the k-space data and further unfolding the folded image by performing a process that uses a regularization term. The processing circuitry applies a weight to the regularization term on the basis of whether or not each of the pixels in the output target image is included in an observation target region.

公开(公告)号：US10591567B2

公开(公告)日：2020-03-17

申请号：US14835077

申请日：2015-08-25

申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION

发明人： Kanako Saito ,  Hidenori Takeshima

IPC分类号： G01R33/563 ,  G01R33/56

摘要： An image processing apparatus according to an embodiment includes conversion circuitry, magnitude image generating circuitry and phase image generating circuitry. The conversion circuitry is configured to convert time-series k-space data into first time-series x-space data, the x-space representing a spatial position. The magnitude image generating circuitry is configured to generate a magnitude image from second time-series x-space data, the second time-series x-space data being acquired by applying a first filter to the first time-series x-space data. The phase image generating circuitry is configured to generate a phase image from third time-series x-space data, the third time-series x-space data being acquired by applying, to the first time-series x-space data, a second filter that is different from the first filter.

公开(公告)号：US10481231B2

公开(公告)日：2019-11-19

申请号：US15342576

申请日：2016-11-03

申请人： Toshiba Medical Systems Corporation

发明人： Hidenori Takeshima ,  Masao Yui ,  Takashi Shigeta

IPC分类号： G01R33/48 ,  G01R33/56 ,  G01R33/561 ,  G01R33/50

摘要： A magnetic resonance imaging apparatus according to an embodiment includes first processing circuitry and second processing circuitry. The first processing circuitry executes a pulse sequence in a acquisition pattern set such that sampling densities of a plurality of pieces of k space data are made different in accordance with a predetermined imaging parameter when the pieces of k space data having different values of the imaging parameter are acquired while changing the values of the imaging parameter. The second processing circuitry generates an image based on the pieces of k space data.

公开(公告)号：US10043293B2

公开(公告)日：2018-08-07

申请号：US14728042

申请日：2015-06-02

申请人： Toshiba Medical Systems Corporation

发明人： Takashi Ida ,  Toshiyuki Ono ,  Shuhei Nitta ,  Taichiro Shiodera ,  Hidenori Takeshima ,  Tomoyuki Takeguchi ,  Hiroaki Nakai

IPC分类号： G06T11/00 ,  A61B6/00 ,  A61B6/03

摘要： An image processing device to reduce noise in a medical image includes first and second generators, a detector, and a corrector. A first image is generated based on data corresponding to photons with a first energy from among data that is obtained based on an energy of radiation that has passed through a subject and a second image is generated based on data corresponding to photons with a second energy. The detector finds, in the second image, a second block having a similar pattern of pixel values to a first block included in the second image. The corrector reduces noise by correcting pixel values of a third block in the first image corresponding to the first block based on new pixel values of the third block that are calculated by using pixel values included in a fourth block in the first image.

公开(公告)号：US09213075B2

公开(公告)日：2015-12-15

申请号：US13677716

申请日：2012-11-15

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

发明人： Mitsue Miyazaki ,  Hidenori Takeshima ,  Tsutomu Hoshino ,  Satoshi Sugiura

IPC分类号： G01V3/00 ,  G01R33/54 ,  G01R33/34 ,  G01R33/56 ,  G01R33/561 ,  G01R33/563 ,  G01R33/567

CPC分类号： G01R33/543 ,  G01R33/34 ,  G01R33/5608 ,  G01R33/5611 ,  G01R33/5614 ,  G01R33/56325 ,  G01R33/56341 ,  G01R33/5673

摘要： A magnetic resonance imaging apparatus includes: a sequence controlling unit that, by controlling an execution of a pulse sequence, acquires magnetic resonance (MR) signals corresponding to a plurality of channels in the pulse sequence executed as a series, the MR signals being configured to be arranged into a first region of a k-space at first intervals and into a second region larger than the first region at second intervals larger than the first intervals; an arranging unit that arranges the MR signals corresponding to the channels into the k-space as k-space data; and an image generating unit that generates first-interval k-space data corresponding to the channels based on the second-interval k-space data acquired by executing the pulse sequence and generates a magnetic resonance image based on the generated first-interval k-space data, the first-interval k-space data acquired by executing the pulse sequence, and sensitivity distributions corresponding to the channels.

摘要翻译： 磁共振成像装置包括：序列控制单元，其通过控制脉冲序列的执行获取与以串行执行的脉冲序列中的多个通道对应的磁共振（MR）信号，MR信号被配置为 以第一间隔被布置到k空间的第一区域中，并且以大于第一间隔的第二间隔进入比第一区域大的第二区域; 布置单元，将与所述通道相对应的MR信号布置为k空间数据; 以及图像生成单元，其基于通过执行所述脉冲序列获取的所述第二间隔k空间数据生成与所述通道对应的第一间隔k空间数据，并且基于所生成的第一间隔k空间生成磁共振图像 数据，通过执行脉冲序列获取的第一间隔k空间数据，以及对应于信道的灵敏度分布。

公开(公告)号：US10274567B2

公开(公告)日：2019-04-30

申请号：US14513736

申请日：2014-10-14

申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION

发明人： Hidenori Takeshima

IPC分类号： G01V3/00 ,  G01R33/385 ,  G01R33/561 ,  G01R33/48 ,  G01R33/565

摘要： A magnetic resonance imaging apparatus according to one embodiment includes an arranger, a sensitivity deriver, and an image generator. The arranger arranges time-series data at a part of sampling points out of sampling points of a k-space determined based on an imaging parameter. The sensitivity deriver derives a sensitivity distribution in a time-space, in which the time-series data transformed in a time direction is expressed with a coefficient value, based on the time-series data. The image generator generates an image of the time-series data using the time-series data and the sensitivity distribution.

公开(公告)号：US10163231B2

公开(公告)日：2018-12-25

申请号：US15248414

申请日：2016-08-26

申请人： Toshiba Medical Systems Corporation

发明人： Kanako Saito ,  Hidenori Takeshima

IPC分类号： G06T11/00 ,  G01R33/48 ,  G06K9/62 ,  G01R33/565 ,  G01R33/561

摘要： A magnetic resonance (MR) imaging apparatus of embodiments includes processing circuitry. The processing circuitry generates a third k-space data group including a first k-space data group and a second k-space data group, by adding the second k-space data group that is arranged in a second range adjacent to a first range, to the first k-space data group that is arranged in the first range and that is undersampled along at least one of the axes in k-space as well as in any axis that is different from the axes in the k-space. The processing circuitry generates an MR image group by performing a reconstruction process on the third k-space data group.

公开(公告)号：US10001537B2

公开(公告)日：2018-06-19

申请号：US14588604

申请日：2015-01-02

申请人： TOSHIBA MEDICAL SYSTEMS CORPORATION

发明人： Hidenori Takeshima ,  Tomoyuki Takeguchi

IPC分类号： G01V3/00 ,  G01R33/48 ,  G01R33/565 ,  G01R33/561

CPC分类号： G01R33/4818 ,  G01R33/482 ,  G01R33/5611 ,  G01R33/56509

摘要： A magnetic resonance imaging apparatus according to an embodiment includes a sequence controller and an image generator. The sequence controller acquires k-space data corresponding to a predetermined quantity of encoding processes. The image generator extracts a plurality of data sets arranged in a time series from the k-space data, selects a data set from among the extracted plurality of data sets on the basis of a movement of a subject, and generates an image by using the selected data set.

公开(公告)号：US20150348289A1

公开(公告)日：2015-12-03

申请号：US14728042

申请日：2015-06-02

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

发明人： Takashi IDA ,  Toshiyuki Ono ,  Shuhei Nitta ,  Taichiro Shiodera ,  Hidenori Takeshima ,  Tomoyuki TAKEGUCHI ,  Hiroaki Nakai

IPC分类号： G06T11/00

CPC分类号： G06T11/005 ,  A61B6/032 ,  A61B6/481 ,  A61B6/482 ,  A61B6/5258

摘要： According to an embodiment, a device includes first and second generators, a detector, and a corrector. The first generator is configured to generate a first image based on data corresponding to photons with a first energy from among data that is obtained based on an energy of radiation that has passed through a subject. The second generator is configured to generate a second image based on data corresponding to photons with a second energy. The detector is configured to detect, in the second image, a second block having a similar pattern of pixel values to a first block included in the second image. The corrector is configured to correct pixel values of a third block in the first image corresponding to the first block based on new pixel values of the third block that are calculated by using pixel values included in a fourth block in the first image.

摘要翻译： 根据实施例，装置包括第一和第二发生器，检测器和校正器。 第一生成器被配置为基于从基于已经通过对象的辐射能量获得的数据中的具有第一能量的对应于光子的数据生成第一图像。 第二发生器被配置为基于与具有第二能量的光子对应的数据来生成第二图像。 检测器被配置为在第二图像中检测具有与第二图像中包括的第一块相似的像素值图案的第二块。 校正器被配置为基于通过使用包括在第一图像中的第四块中的像素值计算的第三块的新像素值来校正对应于第一块的第一图像中的第三块的像素值。