公开(公告)号：US07920671B2

公开(公告)日：2011-04-05

申请号：US12566247

申请日：2009-09-24

申请人： Miwa Okumura ,  Satoru Nakanishi

发明人： Miwa Okumura ,  Satoru Nakanishi

IPC分类号： A61B6/00

CPC分类号： A61B6/4233 ,  A61B6/032 ,  A61B6/4085

摘要： An X-ray CT apparatus has a setting unit, a generating unit, a calculation unit, and a determination unit. The setting unit sets a required width of a group of X-ray detection elements in a row direction, which is relatively insusceptible to an influence of a cone angle of a cone-beam X-ray. The generating unit generates accumulation data by accumulating first projection data, based on first X-ray detection elements within the required width included in the group, with same channel in the row direction in preference to second projection data based on second X-ray detection elements outside the required width included in the group. The calculation unit obtains a motion amount for each heartbeat phase based on the accumulation data. The determination unit determines a specific heartbeat phase based on the motion amount for the each heartbeat phase.

摘要翻译： X射线CT装置具有设定部，生成部，计算部以及判定部。 设置单元设置一组X射线检测元件在行方向上的所需宽度，这对于锥形束X射线的锥角的影响是相对不易察觉的。 生成单元优先于基于第二X射线检测元件的第二投影数据，通过累积第一投影数据，基于组中包含的所需宽度内的第一X射线检测元件，在行方向上具有相同的通道， 在组中包含的所需宽度之外。 计算单元基于积累数据获得每个心跳相位的运动量。 确定单元基于每个心跳阶段的运动量确定特定的心跳相位。

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。

公开(公告)号：US20100014759A1

公开(公告)日：2010-01-21

申请号：US12517509

申请日：2007-12-03

申请人： Tomoharu Suzuki ,  Takashi Hiramaki ,  Kenichi Ohue ,  Kentaro Takahashi ,  Satoru Nakanishi ,  Shinichi Kojima

发明人： Tomoharu Suzuki ,  Takashi Hiramaki ,  Kenichi Ohue ,  Kentaro Takahashi ,  Satoru Nakanishi ,  Shinichi Kojima

IPC分类号： G06K9/46

CPC分类号： G06K9/00248 ,  G06K9/00597

摘要： An eye part detecting device has an image input section (21) for acquiring a face image, an eyelid edge labeling section (24) for detecting upper eyelid candidates and lower eyelid candidates which satisfy predetermined conditions for upper eyelids or lower eyelids in the face image, and an eyelid determination section (27) for comparing combinations of the upper and lower eyelid candidates to determine the combination of the upper and lower eyelid candidates whose relation best satisfies a predetermined condition as the upper and lower eyelids. The eyelid edge labeling section (24) classifies the horizontal edges and vertical edges calculated by an edge calculating section (23) into the upper eyelid candidates and the lower eyelid candidates according to a degree of how well the predetermined conditions are satisfied. A lower eyelid candidate evaluating section (26) may be provided for excluding a lower eyelid candidate when it has at least one horizontal edge present in a lateral direction of the lower eyelid candidate. A lower eyelid candidate discriminating section (25) may be provided for discriminating that of the lower eyelid candidates whose vertical edge does not satisfy the predetermined condition as a lower eyelid preliminary candidate.

摘要翻译： 眼部检测装置具有用于获取面部图像的图像输入部（21），用于检测上眼睑候选的眼睑边缘标签部（24）和满足面部图像中的上眼睑或下眼睑的预定条件的下眼睑候选 以及用于比较上眼睑和下眼睑候选的组合的眼睑确定部（27），以确定其最佳满足预定条件的上眼睑候选物和下眼睑候选物的组合作为上眼睑和下眼睑。 眼睑边缘标签部（24）根据预定条件的满足程度将由边缘计算部（23）计算出的水平边缘和垂直边缘分类为上眼睑候选和下眼睑候选。 可以提供下眼睑候选评价部（26），用于当下眼睑候选者具有存在于下眼睑候选物的横向方向上的至少一个水平边缘时排除下眼睑候选。 可以提供下眼睑候选鉴别部（25），用于将垂直边缘不满足预定条件的下眼睑候选物的下眼皮预备候选区分开。

公开(公告)号：US07564937B2

公开(公告)日：2009-07-21

申请号：US12038205

申请日：2008-02-27

申请人： Satoru Nakanishi

发明人： Satoru Nakanishi

IPC分类号： A61B6/00

CPC分类号： A61B6/542 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/5241 ,  Y10S378/901

摘要： An X-ray CT device generates an X-ray beam in the shape of a cone along the body axis of a subject from an X-ray tube to the subject and detects the X-rays that pass the subject by a two-dimensional detection system during a linear track scan. In addition, the X-ray CT device detects X-rays from a relative rotation movement of the X-ray tube and the subject during the linear track scan under the same condition. A reconstruction device reconstructs an image by back projection of the data of the subject based on the X-rays detected in the two scans.

摘要翻译： X射线CT装置从X射线管向被检体生成沿着被检体的体轴的圆锥形状的X射线束，并且通过二维检测来检测通过被检体的X射线 系统在线性轨迹扫描期间。 此外，X射线CT装置在相同条件下在线性轨迹扫描期间，从X射线管和被摄体的相对旋转运动中检测X射线。 重建装置通过基于在两次扫描中检测到的X射线的背投影对象来重建图像。

公开(公告)号：US20080212850A1

公开(公告)日：2008-09-04

申请号：US12026959

申请日：2008-02-06

申请人： Jun Adachi ,  Yukihiko Yoshinaga ,  Tomoharu Suzuki ,  Takashi Hiramaki ,  Kenichi Ogawa ,  Kenichi Ohue ,  Kentaro Takahashi ,  Shigeyasu Uozumi ,  Shinichi Kojima ,  Satoru Nakanishi

发明人： Jun Adachi ,  Yukihiko Yoshinaga ,  Tomoharu Suzuki ,  Takashi Hiramaki ,  Kenichi Ogawa ,  Kenichi Ohue ,  Kentaro Takahashi ,  Shigeyasu Uozumi ,  Shinichi Kojima ,  Satoru Nakanishi

IPC分类号： G06K9/00

CPC分类号： A61B3/113 ,  G06K9/00248 ,  G06K9/00604

摘要： An eyelid detection apparatus includes a face image storing means storing a plurality of face images of a subject captured at different timings, a change detecting means detecting changes in each face image caused by blinking after processing the plurality of face images stored by the face image storing means, and an eyelid detecting means detecting a position of an eyelid of the subject based on the changes detected by the change detecting means.

摘要翻译： 一种眼睑检测装置，包括：存储以不同时刻拍摄的被检体的多个脸部图像的面部图像存储单元;变更检测单元，检测由所述面部图像存储部存储的多个面部图像处理后的闪烁引起的每个面部图像的变化 以及眼睑检测装置，其基于由变化检测装置检测到的变化来检测被检体的眼睑的位置。