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1. 发明申请

US20090110139A1 X-RAY COMPUTED TOMOGRAPHY APPARATUS 有权
标题翻译： X射线计算机图像设备
公开(公告)号：US20090110139A1
公开(公告)日：2009-04-30
申请号：US12256855
申请日：2008-10-23
申请人： Yasuhiro NOSHI , Satoru Nakanishi , Satoshi Saito
发明人： Yasuhiro NOSHI , Satoru Nakanishi , Satoshi Saito
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/027 , G06T11/006 , G06T2211/421
摘要： A control unit performs helical scanning an subject while moving a top along a direction substantially parallel to a body axis. An acquisition unit acquires projection data via an X-ray detector. A projection data extraction unit extracts a projection data set necessary for the reconstruction of image data associated with a predetermined slice position from the projection data. A weighting unit assigns a smaller weight to first projection data of the extracted projection data than a weight assigned to second projection data, the first projection data being acquired outside a predetermined period including a predetermined acquisition time of the projection data at the predetermined slice position, the second projection data being acquired within the predetermined period. A reconstruction processing unit reconstructs image data on the basis of the first projection data and the second projection data to which the weights are assigned.
摘要翻译：控制单元沿着基本上平行于体轴的方向移动顶部，执行对象的螺旋扫描。获取单元通过X射线检测器获取投影数据。投影数据提取单元从投影数据中提取与预定切片位置相关联的图像数据的重建所需的投影数据集。加权单元将分配给所提取的投影数据的第一投影数据的权重分配给比分配给第二投影数据的权重更小的权重，所述第一投影数据在包含预定切片位置处的投影数据的预定获取时间的预定周期之外获取，所述第二投影数据在所述预定时段内获取。重建处理单元基于第一投影数据和分配权重的第二投影数据来重构图像数据。

2. 发明授权

US08094774B2 X-ray computed tomography apparatus 有权
标题翻译： X射线计算机断层摄影装置
公开(公告)号：US08094774B2
公开(公告)日：2012-01-10
申请号：US12256855
申请日：2008-10-23
申请人： Yasuhiro Noshi , Satoru Nakanishi , Satoshi Saito
发明人： Yasuhiro Noshi , Satoru Nakanishi , Satoshi Saito
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , G06T11/006 , G06T2211/421
摘要： A control unit performs helical scanning an subject while moving a top along a direction substantially parallel to a body axis. An acquisition unit acquires projection data via an X-ray detector. A projection data extraction unit extracts a projection data set necessary for the reconstruction of image data associated with a predetermined slice position from the projection data. A weighting unit assigns a smaller weight to first projection data of the extracted projection data than a weight assigned to second projection data, the first projection data being acquired outside a predetermined period including a predetermined acquisition time of the projection data at the predetermined slice position, the second projection data being acquired within the predetermined period. A reconstruction processing unit reconstructs image data on the basis of the first projection data and the second projection data to which the weights are assigned.
摘要翻译：控制单元沿着基本上平行于体轴的方向移动顶部，执行对象的螺旋扫描。获取单元通过X射线检测器获取投影数据。投影数据提取单元从投影数据中提取与预定切片位置相关联的图像数据的重建所需的投影数据集。加权单元将分配给所提取的投影数据的第一投影数据的权重分配给比分配给第二投影数据的权重更小的权重，所述第一投影数据在包含预定切片位置处的投影数据的预定获取时间的预定周期之外获取，所述第二投影数据在所述预定时段内获取。重建处理单元基于第一投影数据和分配权重的第二投影数据来重构图像数据。

3. 发明授权

US08755585B2 X-ray computed tomography apparatus 有权
标题翻译： X射线计算机断层摄影装置
公开(公告)号：US08755585B2
公开(公告)日：2014-06-17
申请号：US13107368
申请日：2011-05-13
申请人： Satoru Nakanishi , Yasuhiro Noshi
发明人： Satoru Nakanishi , Yasuhiro Noshi
IPC分类号： G06K9/00
CPC分类号： A61B6/5258 , A61B6/032 , A61B6/583 , G06T11/006
摘要： According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, and a rotating unit. The first reconstruction processing reconstructs a clinical image based on projection data detected by the X-ray detector. The second reconstruction processing reconstructs a noise image based on noise data. The clinical image is combined with the noise image.
摘要翻译：根据一个实施例，X射线计算机断层摄影装置包括X射线管，X射线检测器和旋转单元。第一重建处理基于由X射线检测器检测到的投影数据重建临床图像。第二重建处理基于噪声数据重建噪声图像。临床图像与噪声图像相结合。

4. 发明申请

US20060274877A1 Medical image display apparatus and medical image display system 有权
标题翻译：医用图像显示装置及医学图像显示系统
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。

5. 发明授权

US08724879B2 Medical image processing apparatus, a medical imaging apparatus, and a method of processing medical images 有权
标题翻译：医用图像处理装置，医疗成像装置以及处理医用图像的方法
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。

6. 发明授权

US08290233B2 X-ray computed tomography apparatus and image processing method 有权
标题翻译： X射线计算机断层摄影装置及图像处理方法
公开(公告)号：US08290233B2
公开(公告)日：2012-10-16
申请号：US12882876
申请日：2010-09-15
申请人： Yasuhiro Noshi , Satoru Nakanishi
发明人： Yasuhiro Noshi , Satoru Nakanishi
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/4233 , A61B6/466 , A61B6/5241
摘要： According to one embodiment, an X-ray computed tomography apparatus includes an X-ray generating unit and an area detector. The reconstruction processing unit reconstructs first and second volume data including an overlap region. The extraction unit extracts first and second slice images from the first and the second volume data respectively. The calculation unit calculates the difference value between a sum of pixel values in the first slice images and the sum of pixel values in the second slice images. The determination unit determines whether the difference value falls within a predetermined range. The combining unit combines the first and second volume data and sets a pixel value in the overlap region to a pixel value of the first volume data, a pixel value of the second volume data, or a value derived from pixel values of the first and second volume data.
摘要翻译：根据一个实施例，X射线计算机断层摄影装置包括X射线产生单元和区域检测器。重构处理单元重建包括重叠区域的第一和第二体数据。提取单元分别从第一和第二卷数据提取第一和第二切片图像。计算单元计算第一切片图像中的像素值之和与第二切片图像中的像素值之和的差值。确定单元确定差值是否在预定范围内。组合单元组合第一和第二体积数据，并将重叠区域中的像素值设置为第一体积数据的像素值，第二体积数据的像素值或从第一和第二体积数据的像素值导出的值卷数据。

7. 发明申请

US20120288178A1 MEDICAL IMAGE PROCESSING APPARATUS, A MEDICAL IMAGING APPARATUS, AND A METHOD OF PROCESSING MEDICAL IMAGES 有权
标题翻译：医学图像处理装置，医学成像装置和处理医学图像的方法
公开(公告)号：US20120288178A1
公开(公告)日：2012-11-15
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： G06K9/40
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。

8. 发明授权

US07693252B2 Medical image display apparatus and medical image display system 有权
标题翻译：医用图像显示装置及医学图像显示系统
公开(公告)号：US07693252B2
公开(公告)日：2010-04-06
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： A61B6/00
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。

9. 发明申请

US20060198490A1 X-ray computed tomographic apparatus, image processing apparatus, and image processing method 有权
标题翻译： X射线计算机断层摄影装置，图像处理装置和图像处理方法
公开(公告)号：US20060198490A1
公开(公告)日：2006-09-07
申请号：US11367461
申请日：2006-03-06
申请人： Masaharu Tsuyuki , Satoru Nakanishi , Satoshi Saito
发明人： Masaharu Tsuyuki , Satoru Nakanishi , Satoshi Saito
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , A61B6/541 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/412
摘要： An X-ray computed tomographic apparatus includes a gantry unit having a detector having X-ray detection element rows along a slice direction and an X-ray tube and acquiring projection data from a subject by helical scanning, an extraction unit extracting first and second projection data sets corresponding to first and second heartbeat periods from the acquired projection data, each of the first and second projection data sets covering an angle range required for the reconstruction of one frame image, a processing unit weighting each of the extracted first and second projection data sets with a weight corresponding to a data acquisition position and generating a third data set by combining the weighted first and second projection data sets, and a reconstruction processing unit reconstructing one frame image data set on the basis of the generated third data set.
摘要翻译：一种X射线计算机断层摄影装置，具备：具有检测器的台架单元，具有沿切片方向的X射线检测元件列和X射线管，并且通过螺旋扫描获取来自被检体的投影数据;提取单元，提取第一和第二投影从获取的投影数据对应于第一和第二心跳周期的数据集，第一和第二投影数据集中的每一个覆盖重建一帧图像所需的角度范围;处理单元，对提取的第一和第二投影数据以对应于数据获取位置的权重设置，并通过组合加权的第一和第二投影数据集合产生第三数据集，以及重构处理单元，基于所生成的第三数据集重建一帧图像数据集。

10. 发明申请

US20100150421A1 X-RAY COMPUTED TOMOGRAPHY APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS, X-RAY COMPUTED TOMOGRAPHY METHOD, AND MEDICAL IMAGE PROCESSING METHOD 有权
标题翻译： X射线计算机图像设备，医学图像处理设备，X射线计算机图像方法和医学图像处理方法
公开(公告)号：US20100150421A1
公开(公告)日：2010-06-17
申请号：US12631338
申请日：2009-12-04
申请人： Satoru Nakanishi , Satoshi Saito
发明人： Satoru Nakanishi , Satoshi Saito
IPC分类号： G06K9/00 , H05G1/60
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4085 , G06T11/006 , Y10S378/901
摘要： An X-ray computed tomography apparatus includes, an X-ray source which irradiates an object with X-rays spreading in a slice direction, an X-ray detector including a plurality of X-ray detection elements which are juxtaposed in the slice direction and detect X-rays transmitted through the object, a reconstruction unit which includes a back-projection unit which obtains back-projection data relating to each of a plurality of pixels defined in an imaging area by performing back projection of data acquired by the X-ray detector and an interpolation unit which interpolates the data, and performs reconstruction processing for an image, and a setting unit which sets central positions of a plurality of pixels in the imaging area in the reconstruction processing to positions offset from positions corresponding to centers of the X-ray detection elements in the slice direction.
摘要翻译： X射线计算机断层摄影装置包括：X射线源，X射线源，其以切片方向散射X射线照射物体; X射线检测器，其包括在切片方向上并列的多个X射线检测元件;以及检测通过物体传输的X射线，重建单元，其包括背投影单元，其通过执行通过X射线获取的数据的反投影来获得与在成像区域中定义的多个像素中的每一个相关的背投影数据检测器和内插单元，其对数据进行内插并对图像执行重建处理;以及设置单元，其将重建处理中的成像区域中的多个像素的中心位置设置为偏离与X的中心位置相对的位置在切片方向上检测元件。

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