-
公开(公告)号：US20080181478A1
公开(公告)日：2008-07-31
申请号：US12022732
申请日：2008-01-30
IPC分类号： G06K9/00
CPC分类号： G06K9/40 , G06K2209/05 , G06T5/002 , G06T5/10 , G06T5/50 , G06T2207/10072 , G06T2207/20064
摘要： An image processing apparatus includes a storing section which stores data of a digital image, a rotation processing section which generates a plurality of rotated digital images having different rotation angles from the digital image, an image processing section which generates a plurality of image-processed digital images from the rotated digital images, a reverse processing section which generates a plurality of reversed digital images from the image-processed digital images, and a combining section which combines the reversed digital images into one digital image.
摘要翻译： 一种图像处理装置，包括存储数字图像数据的存储部分，从数字图像生成具有不同旋转角度的多个旋转数字图像的旋转处理部分，产生多个图像处理数字 来自旋转的数字图像的图像，从图像处理的数字图像生成多个反转的数字图像的反向处理部分，以及将反转的数字图像组合成一个数字图像的组合部分。
-
公开(公告)号：US08126288B2
公开(公告)日：2012-02-28
申请号：US12022732
申请日：2008-01-30
CPC分类号： G06K9/40 , G06K2209/05 , G06T5/002 , G06T5/10 , G06T5/50 , G06T2207/10072 , G06T2207/20064
摘要： An image processing apparatus includes a storing section which stores data of a digital image, a rotation processing section which generates a plurality of rotated digital images having different rotation angles from the digital image, an image processing section which generates a plurality of image-processed digital images from the rotated digital images, a reverse processing section which generates a plurality of reversed digital images from the image-processed digital images, and a combining section which combines the reversed digital images into one digital image.
摘要翻译： 图像处理装置包括存储数字图像数据的存储部分，从数字图像生成具有不同旋转角度的多个旋转数字图像的旋转处理部分，产生多个图像处理数字 来自旋转的数字图像的图像，从图像处理的数字图像生成多个反转的数字图像的反向处理部分，以及将反转的数字图像组合成一个数字图像的组合部分。
-
公开(公告)号：US07420176B2
公开(公告)日：2008-09-02
申请号：US11244283
申请日：2005-10-06
申请人： Nobutoku Motomura , Hisato Maeda
发明人： Nobutoku Motomura , Hisato Maeda
IPC分类号： G21G4/00
CPC分类号： A61B6/12 , A61B5/4839 , A61B6/037 , G01T1/1647
摘要： A SPECT apparatus has a two-dimensional detector that detects radiations from RIs in a patient via a collimator. A correction processing unit corrects plural two-dimensional projection distributions with different projection angles, which are detected by the detector, on a three-dimensional frequency space according to plural correction functions corresponding to plural distances, respectively. Consequently, a fall in spatial resolution having dependency on distances between the respective RIs and the detector is reduced. A reconfiguring unit reconfigures a three-dimensional RI distribution from the plural two-dimensional projection distributions corrected.
摘要翻译： SPECT装置具有二维检测器，其通过准直器检测来自患者的RI的辐射。 校正处理单元分别根据对应于多个距离的多个校正功能，在三维频率空间上校正由检测器检测到的具有不同投影角度的多个二维投影分布。 因此，降低了依赖于相应的RI和检测器之间的距离的空间分辨率的下降。 重新配置单元从修正的多个二维投影分布重新配置三维RI分布。
-
公开(公告)号：US20060078082A1
公开(公告)日：2006-04-13
申请号：US11244283
申请日：2005-10-06
申请人： Nobutoku Motomura , Hisato Maeda
发明人： Nobutoku Motomura , Hisato Maeda
IPC分类号： H05G1/60
CPC分类号： A61B6/12 , A61B5/4839 , A61B6/037 , G01T1/1647
摘要： A SPECT apparatus has a two-dimensional detector that detects radiations from RIs in a patient via a collimator. A correction processing unit corrects plural two-dimensional projection distributions with different projection angles, which are detected by the detector, on a three-dimensional frequency space according to plural correction functions corresponding to plural distances, respectively. Consequently, a fall in spatial resolution having dependency on distances between the respective RIs and the detector is reduced. A reconfiguring unit reconfigures a three-dimensional RI distribution from the plural two-dimensional projection distributions corrected.
摘要翻译： SPECT装置具有二维检测器，其通过准直器检测来自患者的RI的辐射。 校正处理单元分别根据对应于多个距离的多个校正功能，在三维频率空间上校正由检测器检测到的具有不同投影角度的多个二维投影分布。 因此，降低了依赖于相应的RI和检测器之间的距离的空间分辨率的下降。 重新配置单元从修正的多个二维投影分布重新配置三维RI分布。
-
公开(公告)号：US06175118B1
公开(公告)日：2001-01-16
申请号：US09119624
申请日：1998-07-21
IPC分类号： G01T1161
CPC分类号： G01T1/1647 , A61B6/037 , A61B6/4258 , G01T1/1642
摘要： According to the present invention, sub-windows using a TEW technique are centered to energies corresponding to 1/n and 1/m of maximal photon number in a standard energy spectrum without any scattering component. It is thus possible to improve a count coefficiency, while broadening a main window to a maximal possible extent, without underestimating the scattering component and crosstalk component.
摘要翻译： 根据本发明，使用TEW技术的子窗口集中在对应于标准能谱中没有任何散射分量的1 / n和1 / m的最大光子数的能量。 因此，可以提高计数系数，同时将主窗口扩大到最大可能程度，而不会低估散射分量和串扰分量。
-
6.发明授权Method and apparatus for reconstructing SPECT image by utilizing two separate reconstruction filter functions 失效通过利用两个独立的重建滤波器函数来重建SPECT图像的方法和装置
公开(公告)号：US5434416A
公开(公告)日：1995-07-18
申请号：US217102
申请日：1994-03-24
CPC分类号： G06T11/005 , A61B6/037 , G06T2211/421
摘要： A method and an apparatus for reconstructing SPECT image capable of improving the SPECT image resolution. The apparatus includes: a detector, including a fan-beam collimator, for detecting gamma (.gamma.) rays emitted from a radio isotope injected into a biological body; a rotation unit for effecting relative rotation between the biological body and the detector about a center of rotation to thereby acquire projection data from a different direction; a first reconstructing unit for convoluting the projection data obtained from the detector, by a first convolution function, and for back-projecting the convoluted projection data to a specific region which lies in a sufficiently close vicinity of the detector; a second reconstructing unit for convoluting the projection data by a second convolution function, and for back-projecting the secondly convoluted projection data to another specific region; and display means for displaying thereon a distribution image reconstructed by the first and second reconstructing units.
摘要翻译： 一种用于重建能够改善SPECT图像分辨率的SPECT图像的方法和装置。 该装置包括：检测器，包括扇形光束准直器，用于检测从注入生物体的放射性同位素发射的伽马射线; 旋转单元，用于围绕旋转中心实现生物体和检测器之间的相对旋转，从而从不同方向获取投影数据; 第一重建单元，用于通过第一卷积函数卷积从所述检测器获得的投影数据，以及将所述卷积投影数据反投影到位于所述检测器的所述特定区域的特定区域; 第二重建单元，用于通过第二卷积函数卷积投影数据，以及用于将第二卷积投影数据反投影到另一特定区域; 以及显示装置，用于在其上显示由第一和第二重建单元重建的分布图像。
-
公开(公告)号：US09129370B2
公开(公告)日：2015-09-08
申请号：US12704924
申请日：2010-02-12
申请人： Nobutoku Motomura , Yasunobu Yamada
发明人： Nobutoku Motomura , Yasunobu Yamada
CPC分类号： G06T7/0028 , A61B6/037 , G06T7/33 , G06T2207/10081 , G06T2207/10104 , G06T2207/10108 , G06T2207/30056
摘要： The CT image processor determines the position of the liver in the body of a subject based on CT image. The PET image processor determines the position of the liver in the body of a subject based on PET image. The CT image processor calculates the displacement in the positions of the liver determined by the CT and PET images. The CT image processor extracts the contour of the liver from a CT image. The CT image processor generates a correction CT image by modifying a CT image by moving a CT image to decrease the displacement of the extracted contour in the internal area. The PET image processor performs decrease correction based on the modified CT image.
摘要翻译： CT图像处理器基于CT图像来确定对象体内肝脏的位置。 PET图像处理器基于PET图像来确定对象体内肝脏的位置。 CT图像处理器计算由CT和PET图像确定的肝脏位置的位移。 CT图像处理器从CT图像提取肝脏的轮廓。 CT图像处理器通过移动CT图像来修改CT图像以减小内部区域中提取的轮廓的位移来生成校正CT图像。 PET图像处理器基于经修改的CT图像执行减少校正。
-
8.发明授权公开(公告)号：US07720518B2
公开(公告)日：2010-05-18
申请号：US11020280
申请日：2004-12-27
IPC分类号： A61B5/05
摘要： A nuclear medical diagnostic equipment wherein radiation which is emitted by a nuclide administered into the body of a patient is detected as projection data by a gamma camera, and an image which indicates the distribution of the nuclide within the body of the patient is obtained on the basis of the projection data. The equipment comprises a rotation unit which rotates the radiation detector round the patient, a respiration identification unit which identifies breathing of the patient and non-breathing thereof based on breath holding, a data storage unit in which the radiation detection data acquired by the radiation detector are stored in an identifiable manner on the basis of a result of the identification by the respiration identification unit, and an image generation unit which generates the image from the radiation detection data stored in the data storage unit on the basis of the result of the identification by the respiration identification unit.
摘要翻译： 核医学诊断设备，其中由被照射到患者体内的核素发射的辐射被伽马照相机检测为投影数据，并且在所述核医学诊断设备上获得指示所述核素在患者体内的分布的图像 投影数据的基础。 该设备包括旋转单元，该旋转单元使患者周围的辐射探测器旋转;呼吸识别单元，其基于呼吸保持识别患者的呼吸和不呼吸;数据存储单元，其中由辐射探测器获取的辐射检测数据 基于呼吸识别单元的识别结果，以可识别的方式存储;以及图像生成单元，其根据识别结果从存储在数据存储单元中的放射线检测数据生成图像 由呼吸识别单元。
-
公开(公告)号：US08558176B2
公开(公告)日：2013-10-15
申请号：US13152696
申请日：2011-06-03
申请人： Tomoyasu Komori , Nobutoku Motomura , Takuzo Takayama , Atsushi Fukano , Masao Yamahana , Tatsuya Watanabe
发明人： Tomoyasu Komori , Nobutoku Motomura , Takuzo Takayama , Atsushi Fukano , Masao Yamahana , Tatsuya Watanabe
IPC分类号： G01T1/00
CPC分类号： A61B6/037 , A61B6/032 , A61B6/4417 , G06T11/006 , G06T2211/421 , G06T2211/424
摘要： In a nuclear medicine imaging apparatus as a medical image diagnosis apparatus according to one embodiment, a PET detector is configured to detect a gamma ray emitted from a nuclide introduced into a body of a subject. A PET image reconstruction unit is configured to reconstruct a nuclear medicine image (PET image) as a medical image from the gamma ray projection data created based on the gamma ray detected by the PET detector using successive approximation. A controller is configured to control the PET image reconstruction unit to change the parameter used in the successive approximation depending on information regarding the scanning region in the body of the subject.
摘要翻译： 在根据一个实施例的作为医学图像诊断装置的核医学成像装置中，PET检测器被配置为检测从引入到对象体内的核素发射的γ射线。 PET图像重建单元被配置为从基于由PET检测器检测的伽马射线创建的伽马射线投影数据逐次逼近来重建作为医学图像的核医学图像（PET图像）。 控制器被配置为根据与被摄体的身体中的扫描区域有关的信息来控制PET图像重建单元改变在逐次逼近中使用的参数。
-
公开(公告)号：US20060222145A1
公开(公告)日：2006-10-05
申请号：US11396450
申请日：2006-04-04
申请人： Nobutoku Motomura , Akiyosi Kinda
发明人： Nobutoku Motomura , Akiyosi Kinda
CPC分类号： A61B6/032 , A61B6/5235 , G06T11/005 , G06T2211/432 , Y10S378/901
摘要： A radiodiagnostic apparatus includes a data collection unit, a primary correction unit, a body contour detection unit, a secondary correction unit, and a reconstruction unit. The data collection unit collects a first projection data obtained at a projection angle within a projection angle range in which the whole portion of an object is within an effective acquisition field of a detector, and a second projection data obtained at a projection angle within a projection angle range in which a part of a truncated portion is out of the effective acquisition field of the detector, when the effective acquisition field of the detector is defined as a range limited by a collimator. The primary correction unit calculates a plurality of primary extrapolation expression candidates for correcting the second projection data so as to obtain third projection data candidates formed from the second projection data and the plurality of primary extrapolation expression candidates and for obtaining third projection data from the plurality of third projection data candidates. The body contour detection unit detects position information of a body contour in the second projection data. The secondary correction unit acquires a secondary extrapolation expression and for obtaining fourth projection data. The reconstruction unit reconstructs images on a slice-by-slice basis on the basis of the first projection data and the fourth projection data.
摘要翻译： 放射诊断装置包括数据采集单元，主要校正单元，身体轮廓检测单元，次要校正单元和重建单元。 数据收集单元收集以投影角度范围获得的投影角度的第一投影数据，其中物体的整个部分在检测器的有效采集场内，以及在投影中以投影角度获得的第二投影数据 当检测器的有效采集场被定义为由准直仪限制的范围时，截断部分的一部分超出检测器的有效采集场的角度范围。 主校正单元计算用于校正第二投影数据的多个主外插表达式候选，以便获得由第二投影数据和多个主外推表达式候选形成的第三投影数据候选，并且从多个 第三投影数据候选人。 身体轮廓检测单元检测第二投影数据中的身体轮廓的位置信息。 二次校正单元获取第二外推表达式并获得第四投影数据。 重建单元基于第一投影数据和第四投影数据逐个切片地重建图像。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.027 秒)
