公开(公告)号：US20100054395A1

公开(公告)日：2010-03-04

申请号：US12553594

申请日：2009-09-03

申请人： Yasuhiro Noshi ,  Yasuo Saito ,  Manabu Hiraoka ,  Tatsuo Maeda

发明人： Yasuhiro Noshi ,  Yasuo Saito ,  Manabu Hiraoka ,  Tatsuo Maeda

IPC分类号： H05G1/30

CPC分类号： A61B6/06 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4021

摘要： An X-ray computer tomography apparatus includes an X-ray tube, a two-dimensional array type X-ray detector, a rotating mechanism, a pair of collimators, a collimator moving mechanism which separately moves the pair of collimators in a direction almost parallel to a rotation axis, a reconstruction processing unit which reconstructs image data in a reconstruction range, and a collimator control unit. The collimator control unit controls the position of each collimator in accordance with the distance between an X-ray central plane corresponding to a cone angle 0° and an end face of the reconstruction range. The collimator moving mechanism moves each of the pair of collimators in the range from the outermost position corresponding to the maximum cone angle to the innermost position offset from a position corresponding to a cone angle of nearly 0° to the opposite side.

摘要翻译： X射线计算机断层摄影装置包括X射线管，二维阵列型X射线检测器，旋转机构，一对准直仪，准直仪移动机构，其将该对准直仪分开地沿大致平行的方向移动 重建在重建范围内的图像数据的重建处理单元和准直器控制单元。 准直仪控制单元根据与锥角0°对应的X射线中心面与重建范围的端面之间的距离来控制每个准直仪的位置。 准直器移动机构将对应于最大锥角的最外侧位置的范围内的一对准直仪的每一个移动到与对应于相对于近似0°的锥角的位置偏移的最内侧位置。

公开(公告)号：US08094775B2

公开(公告)日：2012-01-10

申请号：US12553594

申请日：2009-09-03

申请人： Yasuhiro Noshi ,  Yasuo Saito ,  Manabu Hiraoka ,  Tatsuo Maeda

发明人： Yasuhiro Noshi ,  Yasuo Saito ,  Manabu Hiraoka ,  Tatsuo Maeda

IPC分类号： A61B6/03 ,  G21K1/04

CPC分类号： A61B6/06 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4021

摘要： An X-ray computer tomography apparatus includes an X-ray tube, a two-dimensional array type X-ray detector, a rotating mechanism, a pair of collimators, a collimator moving mechanism which separately moves the pair of collimators in a direction almost parallel to a rotation axis, a reconstruction processing unit which reconstructs image data in a reconstruction range, and a collimator control unit. The collimator control unit controls the position of each collimator in accordance with the distance between an X-ray central plane corresponding to a cone angle 0° and an end face of the reconstruction range. The collimator moving mechanism moves each of the pair of collimators in the range from the outermost position corresponding to the maximum cone angle to the innermost position offset from a position corresponding to a cone angle of nearly 0° to the opposite side.

摘要翻译： X射线计算机断层摄影装置包括X射线管，二维阵列型X射线检测器，旋转机构，一对准直仪，准直仪移动机构，其将该对准直仪分开地沿大致平行的方向移动 重建在重建范围内的图像数据的重建处理单元和准直器控制单元。 准直仪控制单元根据与锥角0°对应的X射线中心面与重建范围的端面之间的距离来控制每个准直仪的位置。 准直器移动机构将对应于最大锥角的最外侧位置的范围内的一对准直仪的每一个移动到与对应于相对于近似0°的锥角的位置偏移的最内侧位置。

公开(公告)号：US07885374B2

公开(公告)日：2011-02-08

申请号：US11685985

申请日：2007-03-14

申请人： Yasuhiro Noshi ,  Tatsuo Maeda ,  Miwa Okumura ,  Shinsuke Tsukagoshi

发明人： Yasuhiro Noshi ,  Tatsuo Maeda ,  Miwa Okumura ,  Shinsuke Tsukagoshi

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B5/0456 ,  A61B6/027 ,  A61B6/4085 ,  A61B6/488 ,  A61B6/504 ,  A61B6/541

摘要： An X-ray computed tomography (CT) apparatus having an X-ray tube emitting an X-ray, a detector detecting X-rays transmitted through a subject to be examined, and a bed on which said subject to be examined is placed, said X-ray CT apparatus reconstructing the image of the subject to be examined from a transmission data obtained by emitting X-rays to the subject to be examined. The X-ray computed tomography (CT) apparatus further having an input part, a scan controlling part, a detecting part, a memory part, a segmentation part, a biological-signal synchronization reconstructing part, a biological-signal asynchronization reconstructing part, and a combining part.

摘要翻译： 一种X射线计算机断层摄影（CT）装置，其具有发射X射线的X射线管，检测器通过待检查对象透射的X射线检测器和放置所述待检查对象的床，所述 X射线CT装置从通过对待检查对象发射X射线获得的透射数据重建待检查对象的图像。 X射线计算机断层摄影（CT）装置还具有输入部分，扫描控制部分，检测部分，存储部分，分割部分，生物信号同步重构部分，生物信号异步重建部分和 组合部分。

公开(公告)号：US20070217567A1

公开(公告)日：2007-09-20

申请号：US11685985

申请日：2007-03-14

申请人： Yasuhiro Noshi ,  Tatsuo Maeda ,  Miwa Okumura ,  Shinsuke Tsukagoshi

发明人： Yasuhiro Noshi ,  Tatsuo Maeda ,  Miwa Okumura ,  Shinsuke Tsukagoshi

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： A61B6/032 ,  A61B5/0456 ,  A61B6/027 ,  A61B6/4085 ,  A61B6/488 ,  A61B6/504 ,  A61B6/541

摘要： The X-ray CT apparatus that performs a scan after a pre-scan, comprising a reconstruction part reconstructing the pre-scan image of said subject to be examined from transmission data detected by said detector during said pre-scan, and also reconstructing the scan image of said subject to be examined from the transmission data detected by said detector during said scan; and a scan controlling part initiating a scan by directly changing the helical pitch of said bed from the stopped position for said pre-scan to the position toward an ending edge of the reconstruction area of the image. The scan controlling part initiates the scan at a first helical pitch by which X-rays for a predetermined number of views can be emitted at a starting edge of the reconstruction area of the image, and, after X-rays for the predetermined number of views is emitted, the scan at a second helical pitch continues.

摘要翻译： X射线CT装置，其在预扫描之后执行扫描，包括：重构部分，在所述预扫描期间，由所述检测器检测到的传输数据，重建所述待检测对象的预扫描图像;以及重构扫描 在所述扫描期间由所述检测器检测到的传输数据检查所述被检体的图像; 以及扫描控制部分，通过将所述床的螺旋间距从用于所述预扫描的停止位置直接改变到图像的重建区域的结束边缘的位置来启动扫描。 扫描控制部分以第一螺旋间距开始扫描，通过该第一螺距，在图像的重建区域的起始边缘处可以发射预定数量视图的X射线，并且在X射线之后，对于预定数量的视图 被发射，继续以第二螺距进行扫描。

公开(公告)号：US20130021335A1

公开(公告)日：2013-01-24

申请号：US13552002

申请日：2012-07-18

申请人： Kazumasa Arakita ,  Yasuhiro Noshi ,  Tatsuo Maeda ,  Go Mukumoto ,  Takahiro Yoda ,  Yoshiaki Yaoi ,  Tomonori Ozaki

发明人： Kazumasa Arakita ,  Yasuhiro Noshi ,  Tatsuo Maeda ,  Go Mukumoto ,  Takahiro Yoda ,  Yoshiaki Yaoi ,  Tomonori Ozaki

IPC分类号： G06T15/00

CPC分类号： G02B27/2214 ,  A61B6/462 ,  A61B6/466 ,  A61B6/469 ,  A61B6/501 ,  A61B6/5223 ,  G02B3/14 ,  H04N13/111 ,  H04N13/305 ,  H04N13/361

摘要： In an image processing system according to an embodiment, an image processing device in the embodiment includes a receiving unit, a flat image generator, and an output unit. The receiving unit receives setting of a region of interest on parallax images of a subject that are displayed stereoscopically. The flat image generator generates a flat image of a cut surface of the subject that is generated by cutting the subject along a plane corresponding to the region of interest received by the receiving unit based on volume data of the subject stored in a predetermined storage device. The output unit outputs the flat image generated by the flat image generator.

摘要翻译： 在根据实施例的图像处理系统中，本实施例中的图像处理装置包括接收单元，平面图像生成器和输出单元。 接收单元在立体显示的对象的视差图像上接收感兴趣区域的设置。 平面图像生成器基于存储在预定存储装置中的被摄体的体积数据，生成通过沿对应于由接收单元接收的感兴趣区域的平面切割被摄体而产生的被摄体的切面的平坦图像。 输出单元输出由平面图像发生器产生的平面图像。

公开(公告)号：US09239393B2

公开(公告)日：2016-01-19

申请号：US13688531

申请日：2012-11-29

申请人： Manabu Teshigawara ,  Yasuhiro Noshi ,  Takuzo Takayama

发明人： Manabu Teshigawara ,  Yasuhiro Noshi ,  Takuzo Takayama

IPC分类号： G01T1/29 ,  G01T1/164 ,  A61B6/03

CPC分类号： G01T1/2985 ,  A61B6/037 ,  G01T1/1647

摘要： A positron emission computed tomography apparatus according to an embodiment includes a detector, a coincidence counting information generating unit, and a body movement detecting unit. The detector detects annihilation radiation released from a subject. The coincidence counting information generating unit searches for sets of counting information, which counted a pair of annihilation radiations at substantially the same time, from a counting information list that is generated from output signals of the detector; generates a set of coincidence counting information for each retrieved set of counting information; and generates a time series list of coincidence counting information. Based on the time series list of coincidence counting information, the body movement detecting unit detects temporal changes in the body movement of the subject.

摘要翻译： 根据实施例的正电子发射计算机断层摄影装置包括检测器，重合计数信息生成单元和身体运动检测单元。 检测器检测从受试者释放的湮灭辐射。 符合计数信息生成单元从从检测器的输出信号生成的计数信息列表中，搜索基本相同的时间对一对湮灭辐射进行计数的计数信息组; 为每个检索的计数信息集合生成一组重合计数信息; 并生成符合计数信息的时间序列列表。 身体运动检测部基于符合计数信息的时间序列列表来检测被检体的身体动作的时间变化。

公开(公告)号：US09050002B2

公开(公告)日：2015-06-09

申请号：US12861319

申请日：2010-08-23

申请人： Yasuhiro Noshi ,  Satoshi Saito

发明人： Yasuhiro Noshi ,  Satoshi Saito

IPC分类号： G06K9/00 ,  A61B6/03 ,  G06T11/00 ,  A61B6/00

CPC分类号： A61B6/032 ,  A61B6/503 ,  A61B6/541 ,  G06T11/006 ,  G06T2211/412

摘要： According to one embodiment, an apparatus includes a reconstructing unit, a first control unit, a detecting unit, a generating unit, and a second control unit. The first control unit controls the reconstructing unit to reconstruct first images based on projection data collected in first periods. The detecting unit detects second periods which belong to pulsation cycles different from one another and in which an organ to be imaged is in the substantially same form, based on the first images. The generating unit generates data for reconstruction including projection data for the required angle range by combining projection data collected in third periods close to the second periods. The second control unit controls the reconstructing unit to reconstruct a second image based the data for reconstruction.

摘要翻译： 根据一个实施例，一种装置包括重建单元，第一控制单元，检测单元，生成单元和第二控制单元。 第一控制单元基于在第一周期中收集的投影数据来控制重建单元重构第一图像。 检测单元基于第一图像检测属于彼此不同的脉动周期的第二周期，并且其中要成像的器官基本相同的形式。 生成单元通过组合在接近第二周期的第三周期中收集的投影数据来生成包括所需角度范围的投影数据的重建数据。 第二控制单元基于重建数据控制重建单元重建第二图像。

公开(公告)号：US08284893B2

公开(公告)日：2012-10-09

申请号：US12560197

申请日：2009-09-15

申请人： Yasuhiro Noshi

发明人： Yasuhiro Noshi

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/03 ,  A61B6/5282

摘要： An X-ray computer tomography apparatus includes an X-ray tube, an X-ray detector, a rotating mechanism, a reconstruction unit which reconstructs multislice or volume image data based on the projection data detected by the X-ray detector, a profile generating unit which generates a CT value profile in the slice direction for each pixel by using image data, a profile portion extraction unit which extracts a profile portion exceeding a predetermined threshold from each of the CT value profiles, a scattered radiation distribution estimation unit which estimates a scattered radiation distribution centered on the profile portion based on the CT value integral and width of the profile portion, and a scattered radiation correction unit which corrects the image data based on the estimated scattered radiation distribution.

摘要翻译： X射线计算机断层摄影装置包括X射线管，X射线检测器，旋转机构，基于由X射线检测器检测出的投影数据重构多层或体积图像数据的重建单元，生成轮廓图 单位，其通过使用图像数据生成针对每个像素的切片方向的CT值轮廓;轮廓部分提取单元，从每个CT值轮廓提取超过预定阈值的轮廓部分;散射辐射分布估计单元，其估计 基于轮廓部分的CT值积分和宽度的轮廓部分中心的散射辐射分布;以及基于估计的散射辐射分布来校正图像数据的散射辐射校正单元。

公开(公告)号：US20060274877A1

公开(公告)日：2006-12-07

申请号：US11447117

申请日：2006-06-06

申请人： Yasuhiro Noshi ,  Satoru Nakanishi

发明人： Yasuhiro Noshi ,  Satoru Nakanishi

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： A61B6/032 ,  A61B6/00 ,  A61B6/465 ,  A61B6/469 ,  A61B6/583

摘要： Noise originating from the difference between a second dose as an X-ray dose used for simulation and a first dose as an X-ray dose associated with raw data obtained by past imaging operation is calculated. Simulation pure raw data as information associated with a photon count and noise which are predicted to be detected by a plurality of X-ray detection elements when imaging is performed by using X-rays of the second dose is generated on the basis of the calculated noise and the raw data obtained by past imaging operation. A simulation image predicted to be obtained by imaging operation using X-rays of the second dose is generated by using the simulation pure raw data and displayed.

摘要翻译： 计算来自作为用于模拟的X射线剂量的第二剂量与作为与通过过去成像操作获得的原始数据相关联的X射线剂量的第一剂量之间的差异的噪声。 当根据计算出的噪声产生作为通过使用第二剂量的X射线进行成像时由多个X射线检测元件检测到的光子计数和噪声相关联的信息的模拟纯原始数据 以及通过过去的成像操作获得的原始数据。 通过使用模拟纯原始数据生成预测通过使用第二剂量的X射线的成像操作获得的模拟图像并显示。

公开(公告)号：US08724879B2

公开(公告)日：2014-05-13

申请号：US13520052

申请日：2011-10-25

申请人： Yoshinori Uebayashi ,  Satoru Nakanishi ,  Yasuhiro Noshi

发明人： Yoshinori Uebayashi ,  Satoru Nakanishi ,  Yasuhiro Noshi

IPC分类号： G06K9/00

CPC分类号： A61B6/5258 ,  A61B8/5215 ,  A61B8/5269 ,  G06F19/00 ,  G06T5/002 ,  G06T5/40 ,  G06T5/50 ,  G06T2207/10081 ,  G06T2207/20224

摘要： A medical image processing apparatus includes a difference calculator, a removal part, a first statistical processing part, and an estimation part. The difference calculator receives a plurality of medical image data with different imaging positions and obtains the difference between the plurality of medical image data, thereby generating difference image data that represents the difference. The removal part removes the region corresponding to a structure from the difference image data. The first statistical processing part obtains the first standard deviation of pixel values of each pixel of the difference image data with the region corresponding to the structure removed. The estimation part estimates the second standard deviation of the medical image data based on the first standard deviation. The medical image processing apparatus can estimate noise level of medical image data.

摘要翻译： 医疗图像处理装置包括差分计算器，去除部分，第一统计处理部分和估计部分。 差分计算器接收具有不同成像位置的多个医学图像数据，并获得多个医学图像数据之间的差异，从而生成表示差异的差异图像数据。 去除部分从差分图像数据中去除与结构对应的区域。 第一统计处理部分获得差分图像数据的每个像素的像素值与去除结构的区域的第一标准偏差。 估计部分基于第一标准偏差来估计医学图像数据的第二标准偏差。 医疗图像处理装置可以估计医学图像数据的噪声水平。