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1. 发明申请

US20060140337A1 X-ray ct device 有权
标题翻译： X射线ct装置
公开(公告)号：US20060140337A1
公开(公告)日：2006-06-29
申请号：US10544907
申请日：2004-02-13
申请人： Osamu Miyazaki , Tetsuo Nakazawa , Hiroto Kokubun
发明人： Osamu Miyazaki , Tetsuo Nakazawa , Hiroto Kokubun
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： A61B6/032 , A61B6/027 , A61B6/5288 , A61B6/542
摘要： An X-ray CT apparatus comprises: motion information acquisition means that acquires periodical motion information on a motion portion of an object to be examined; a detector that rotates together with an X-ray source and detects X-rays applied to the object from the X-ray source to acquire projection data per collection region; and reconstruction means that processes the projection data resulting from the detector to reconstruct a tomogram of the object, wherein the X-ray CT apparatus further includes delay time determination means that determines a delay time by adding a time width of the collection region and a processing delay time in the X-ray CT apparatus and a time interval from the moment when the phase of the measured periodical motion information is matched with the phase of the rotation period of the X-ray CT apparatus to the moment when they are matched next time, and collection means that correlates, with the periodical motion information obtained by the motion information acquisition means, and successively collects the projection data obtained from the detector, with the reconstruction means starting reconstruction of the tomogram after the delay time.
摘要翻译： X射线CT装置包括：运动信息获取装置，其获取关于待检查对象的运动部分的周期运动信息; 检测器，其与X射线源一起旋转，并且检测从X射线源施加到物体的X射线以获取每个收集区域的投影数据; 并且重建装置处理由检测器产生的投影数据，以重构物体的断层图像，其中，所述X射线CT装置还包括延迟时间确定装置，其通过加入所述收集区域的时间宽度和处理来确定延迟时间 X射线CT装置的延迟时间和从测定的周期运动信息的相位与X射线CT装置的旋转周期的相位相匹配的时刻到下一次匹配的时刻以及与由运动信息获取装置获得的周期运动信息相关联的收集装置，并且连续地收集从检测器获得的投影数据，重建装置在延迟时间之后开始重建断层图像。

2. 发明申请

US20080056547A1 Image Data Collection Control Method and Image Data Collection System 失效
标题翻译：图像数据采集控制方法和图像数据采集系统
公开(公告)号：US20080056547A1
公开(公告)日：2008-03-06
申请号：US10593359
申请日：2005-03-11
申请人： Hiroto Kokubun , Osamu Miyazaki , Tetsuo Nakazawa
发明人： Hiroto Kokubun , Osamu Miyazaki , Tetsuo Nakazawa
IPC分类号： G06K9/00 , A61B6/03
CPC分类号： A61B6/541 , A61B6/032 , A61B6/5264
摘要： A method includes a periodic motion data input step S208 of receiving input of periodic motion data indicating changes of the periodic motion with time in an object to be examined who is a target of image data collection, a step S214 of estimating fluctuations in the time resolution of the image data with time based on the periodic motion data, designating an image collection range in the object, and adjusting the collection position of the image data such that the image data is collected in the image collection range at a suitable time of image data collection, the estimated time resolution being set in a predetermined suitable range, and an image data collection position control step S216 of relatively moving at least a part of the image data collection range and the collection position of the image data such that the part of the range and the position are superimposed on each other within a time when the image data of the image data collection range has a time resolution within the desired range based on the image data collection conditions.
摘要翻译：一种方法包括周期性运动数据输入步骤S 208，其接收指示被检测对象物体中的周期性运动随时间的变化的周期运动数据的输入，该对象是图像数据收集的目标;步骤S 214，基于周期运动数据随时间分辨图像数据，指定对象中的图像采集范围，以及调整图像数据的收集位置，使得图像数据在图像采集范围内被收集在合适的时间图像数据收集，估计时间分辨率被设置在预定的适当范围内;以及图像数据收集位置控制步骤S 216，其相对移动图像数据收集范围的至少一部分和图像数据的收集位置，使得在图像数据收集范围的图像数据的时间分辨率在t内的时间内，范围和位置的一部分彼此叠加他根据图像数据收集条件预期范围。

3. 发明授权

US07006593B2 Method of producing cardiac tomogram and tomograph using x-ray ct apparatus 有权
标题翻译：使用X射线摄影装置制作心脏断层图像和断层摄影术的方法
公开(公告)号：US07006593B2
公开(公告)日：2006-02-28
申请号：US10496420
申请日：2002-11-28
申请人： Hiroto Kokubun , Tetsuo Nakazawa , Osamu Miyazaki
发明人： Hiroto Kokubun , Tetsuo Nakazawa , Osamu Miyazaki
IPC分类号： A61B6/03
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503 , Y10S378/901
摘要： In an X-ray CT apparatus having a multi-slice detector, the retrospective ECG (Electrocardiography) gating imaging is applied to helical scans. Discontinuity of projection data generated in the scans is interpolated using data at a heartbeat time phase in 180-degree opposite relation to reduce motion artifacts. Further, projection data at an arbitrary slicing position and in at arbitrary heartbeat time phase are formed utilizing continuous divided projection data obtained above, and by properly combining or gathering them, a tomogram of whole heart, a three-dimensional image thereof, and further, a three-dimensional cardiac moving image in heartbeat time phases with an arbitrary time interval can be continuously and smoothly created.
摘要翻译：在具有多切片检测器的X射线CT装置中，回顾性ECG（心电图）门控成像应用于螺旋扫描。在扫描中产生的投影数据的不连续性使用180度相对关系的心跳时间相位上的数据进行内插，以减少运动伪像。此外，利用上面获得的连续划分的投影数据，并且通过适当地组合或收集全心脏的断层图像及其三维图像，形成任意切片位置和任意心跳时间相位的投影数据，可以连续平稳地创建具有任意时间间隔的心跳时间相位的三维心脏运动图像。

4. 发明申请

US20050069081A1 Cardiac tomography and tomogram using x-ray ct apparatus 有权
标题翻译：心脏断层扫描和X线片断层扫描仪
公开(公告)号：US20050069081A1
公开(公告)日：2005-03-31
申请号：US10496420
申请日：2002-11-28
申请人： Hiroto Kokubun , Tetsuo Nakazawa , Osamu Miyazaki
发明人： Hiroto Kokubun , Tetsuo Nakazawa , Osamu Miyazaki
IPC分类号： A61B6/00 , A61B6/03 , H05G1/60 , G01N23/00 , G21K1/12
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503 , Y10S378/901
摘要： In an X-ray CT apparatus having a multi-slice detector, the retrospective ECG (Electrocardiography) gating imaging is applied to helical scans. Discontinuity of projection data generated in the scans is interpolated using data at a heartbeat time phase in 180-degree opposite relation to reduce motion artifacts. Further, projection data at an arbitrary slicing position and in at arbitrary heartbeat time phase are formed utilizing continuous divided projection data obtained above, and by properly combining or gathering them, a tomogram of whole heart, a three-dimensional image thereof, and further, a three-dimensional cardiac moving image in heartbeat time phases with an arbitrary time interval can be continuously and smoothly created.
摘要翻译：在具有多切片检测器的X射线CT装置中，回顾性ECG（心电图）门控成像应用于螺旋扫描。在扫描中产生的投影数据的不连续性使用180度相对关系的心跳时间相位上的数据进行内插，以减少运动伪像。此外，利用上面获得的连续划分的投影数据，并且通过适当地组合或收集全心脏的断层图像及其三维图像，形成任意切片位置和任意心跳时间相位的投影数据，可以连续平稳地创建具有任意时间间隔的心跳时间相位的三维心脏运动图像。

5. 发明授权

US07426255B2 X-ray CT device 有权
标题翻译： X射线CT装置
公开(公告)号：US07426255B2
公开(公告)日：2008-09-16
申请号：US10544907
申请日：2004-02-13
申请人： Osamu Miyazaki , Tetsuo Nakazawa , Hiroto Kokubun
发明人： Osamu Miyazaki , Tetsuo Nakazawa , Hiroto Kokubun
IPC分类号： H05G1/60
CPC分类号： A61B6/032 , A61B6/027 , A61B6/5288 , A61B6/542
摘要： An X-ray CT apparatus comprises: motion information acquisition means that acquires periodical motion information on a motion portion of an object to be examined; a detector that rotates together with an X-ray source and detects X-rays applied to the object from the X-ray source to acquire projection data per collection region; and reconstruction means that processes the projection data resulting from the detector to reconstruct a tomogram of the object, wherein the X-ray CT apparatus further includes delay time determination means that determines a delay time by adding a time width of the collection region and a processing delay time in the X-ray CT apparatus and a time interval from the moment when the phase of the measured periodical motion information is matched with the phase of the rotation period of the X-ray CT apparatus to the moment when they are matched next time, and collection means that correlates, with the periodical motion information obtained by the motion information acquisition means, and successively collects the projection data obtained from the detector, with the reconstruction means starting reconstruction of the tomogram after the delay time.
摘要翻译： X射线CT装置包括：运动信息获取装置，其获取关于待检查对象的运动部分的周期运动信息; 检测器，其与X射线源一起旋转，并且检测从X射线源施加到物体的X射线以获取每个收集区域的投影数据; 并且重建装置处理由检测器产生的投影数据，以重构物体的断层图像，其中，所述X射线CT装置还包括延迟时间确定装置，其通过加入所述收集区域的时间宽度和处理来确定延迟时间 X射线CT装置的延迟时间和从测定的周期运动信息的相位与X射线CT装置的旋转周期的相位相匹配的时刻到下一次匹配的时刻以及与由运动信息获取装置获得的周期运动信息相关联的收集装置，并且连续地收集从检测器获得的投影数据，重建装置在延迟时间之后开始重建断层图像。

6. 发明授权

US08055045B2 Method and system for collecting image data from image data collection range including periodically moving part 失效
标题翻译：从图像数据收集范围收集图像数据的方法和系统，包括周期性移动部分
公开(公告)号：US08055045B2
公开(公告)日：2011-11-08
申请号：US10593359
申请日：2005-03-11
申请人： Hiroto Kokubun , Osamu Miyazaki , Tetsuo Nakazawa
发明人： Hiroto Kokubun , Osamu Miyazaki , Tetsuo Nakazawa
IPC分类号： G06K9/00
CPC分类号： A61B6/541 , A61B6/032 , A61B6/5264
摘要： A method includes a periodic motion data input step S208 of receiving input of periodic motion data indicating changes of the periodic motion with time in an object to be examined who is a target of image data collection, a step S214 of estimating fluctuations in the time resolution of the image data with time based on the periodic motion data, designating an image collection range in the object, and adjusting the collection position of the image data such that the image data is collected in the image collection range at a suitable time of image data collection, the estimated time resolution being set in a predetermined suitable range, and an image data collection position control step S216 of relatively moving at least a part of the image data collection range and the collection position of the image data such that the part of the range and the position are superimposed on each other within a time when the image data of the image data collection range has a time resolution within the desired range based on the image data collection conditions.
摘要翻译：一种方法包括周期性运动数据输入步骤S208，其接收指示作为图像数据收集目标的被检测对象中的周期性运动随时间的变化的周期运动数据的输入;估计时间分辨率的波动的步骤S214 基于周期运动数据的图像数据随时间的变化，指定对象中的图像采集范围，以及调整图像数据的收集位置，使得图像数据在图像数据的合适时间被收集在图像采集范围内将预定时间分辨率设置在预定的适当范围内的图像数据收集位置控制步骤S216，相对移动图像数据收集范围的至少一部分和图像数据的收集位置，使得部分在图像数据收集范围的图像数据具有时间分辨率的时间内，位置彼此叠加基于图像数据收集条件的期望范围。

7. 发明申请

US20070189436A1 Radiotomography apparatus 有权
标题翻译：放射摄影仪
公开(公告)号：US20070189436A1
公开(公告)日：2007-08-16
申请号：US11629756
申请日：2005-06-15
申请人： Taiga Goto , Osamu Miyazaki , Koichi Hirokawa , Hiroto Kokubun
发明人： Taiga Goto , Osamu Miyazaki , Koichi Hirokawa , Hiroto Kokubun
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/005 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503 , A61B6/541 , G06T2211/412
摘要： A radiotomography apparatus according to the present invention includes a radiation detection device that irradiates radiation from a radiation source in multiple directions around an object to be examined and detects radiation transmitted through the object from the multiple directions; a table on which the object lies and which can move the object in a body axis direction of the object; reconstruction parameter setting device that sets reconstruction parameters that include an amount of movement of the table in the body axis direction, and that are used to reconstruct an image of the object; a reconstruction view area calculating device that calculates a reconstruction view area for at least one data segment that is necessary for a reconstruction calculation that is determined for each spatial position that is reconstructed based on the set reconstruction parameters; a reference segment position setting device that sets a reference segment position in the calculated reconstruction view area according to a phase signal that is obtained by dynamic analysis of the object; an effective segment calculating device that calculates a data segment including the set reference segment position as an effective segment using a predetermined weight function; and an image creating device that creates an image by reconstructing the calculated effective segments. It is thus possible to provide a radiotomography apparatus that can both enhance temporal resolution and reduce ineffective radiation exposure.
摘要翻译：根据本发明的放射摄影术装置包括：放射线检测装置，其从围绕被检体的多个方向照射来自辐射源的辐射，并从多个方向检测透过物体的辐射; 物体所在的桌子，并且可以在物体的身体轴线方向上移动物体; 重建参数设置装置，其设置包括所述表在所述体轴方向上的移动量的重建参数，并且用于重建所述对象的图像; 重构视区计算装置，其根据所设置的重建参数，计算针对重建计算确定的每个空间位置所确定的至少一个数据段的重构视区; 参考分段位置设定装置，根据通过物体的动态分析获得的相位信号，在计算出的重建视区内设定基准分段位置; 有效段计算装置，其使用预定的权重函数来计算包括所设置的参考段位置的数据段作为有效段; 以及通过重建所计算的有效段来创建图像的图像创建装置。因此，可以提供能够增强时间分辨率并减少无效辐射暴露的放射摄影术设备。

8. 发明授权

US07620443B2 X-ray CT imaging method and X-ray CT device 有权
标题翻译： X射线CT成像方法和X射线CT装置
公开(公告)号：US07620443B2
公开(公告)日：2009-11-17
申请号：US10501121
申请日：2003-01-09
申请人： Hiroto Kokubun , Osamu Miyazaki
发明人： Hiroto Kokubun , Osamu Miyazaki
IPC分类号： A61B5/05 , G06K9/00 , H01J35/00
CPC分类号： A61B6/541 , A61B6/503
摘要： An X-ray CT apparatus can be configured such that an amount of artifacts of a tomographic image of a heart is reduced. For example, the X-ray CT apparatus can include detecting means for detecting a static cardiac time phase with a small amount of motion artifacts in a predetermined portion of the subject based on heartbeat information acquired in association with the projection data, and image reconstructing means for generating the tomographic image by reconstructing projection data corresponding to the static cardiac time phase detected by the detecting means.
摘要翻译：可以配置X射线CT装置，使得心脏的断层图像的伪像量减少。例如，X射线CT装置可以包括检测装置，用于基于与投影数据相关联地获取的心跳信息，在对象的预定部分中检测具有少量运动伪影的静态心脏时间相位，以及图像重建装置用于通过重建与由检测装置检测到的静态心脏时间相对应的投影数据来生成断层图像。

9. 发明授权

US07505550B2 Radiotomography apparatus 有权
标题翻译：放射摄影仪
公开(公告)号：US07505550B2
公开(公告)日：2009-03-17
申请号：US11629756
申请日：2005-06-15
申请人： Taiga Goto , Osamu Miyazaki , Koichi Hirokawa , Hiroto Kokubun
发明人： Taiga Goto , Osamu Miyazaki , Koichi Hirokawa , Hiroto Kokubun
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503 , A61B6/541 , G06T2211/412
摘要： A radiotomograph comprises radiation detecting means which applies radiation from a radiation source to a subject from many direction and detects radiation transmitted through the subject from the directions, a bed on which the subject lies and which can move the subject in the direction of the body axis of the subject, reconstruction parameter setting means which sets reconstruction parameters including the amount of movement of the bed in the direction of the body axis and used to reconstruct, an image of the subject, reconstruction view area calculating means which calculates the reconstruction view area for at least one data segment necessary for reconstruction calculation determined for each position in a space reconstructed according to the set reconstruction parameters, reference segment position setting means which sets a reference segment position in the calculated reconstruction view area according to a phase signal generated by dynamic state analysis of the subject, effective segment calculating means which calculates an effective segment from the data segment containing the set reference segment position using a predetermined weight function, and image creating means for creating an image by reconstructing the calculated effective segment. With this, a radiotomograph both having an improved time resolution and enabling reduced effective radiation exposure can be provided.
摘要翻译：放射图像仪包括辐射检测装置，其从多个方向向受检者施加辐射，并从被检者所在的方向上检测通过被检体的方向传播的辐射，并且可以沿着身体轴线的方向移动受检者重建参数设置装置，其重建参数，其包括床体在身体轴线方向上的运动量并用于重构对象的重建参数，重建视区计算装置，其计算重建视区，根据所设定的重建参数重建的空间中的每个位置确定重建计算所需的至少一个数据段，基准段位置设定装置，根据由动态生成的相位信号，在计算出的重建视区内设定基准段位置分析主题，效果 e段计算装置，其使用预定的权重函数从包含所述设置的参考段位置的数据段计算有效段;以及图像创建装置，用于通过重建所计算的有效段来创建图像。因此，可以提供具有改善的时间分辨率并且能够实现减少的有效辐射暴露的放射图像仪。

10. 发明申请

US20050129176A1 X-ray ct imaging method and x-ray ct device 有权
标题翻译： X射线成像方法和x射线ct装置
公开(公告)号：US20050129176A1
公开(公告)日：2005-06-16
申请号：US10501121
申请日：2003-01-09
申请人： Hiroto Kokubun , Osamu Miyazaki
发明人： Hiroto Kokubun , Osamu Miyazaki
IPC分类号： A61B6/03 , A61B6/00 , G06T1/00 , H05G1/10
CPC分类号： A61B6/541 , A61B6/503
摘要： To reduce an amount of artifacts of a tomographic image of a heart in an X-ray CT apparatus for generating a tomographic image by reconstructing projection data acquired by scanning a predetermined slice of a subject by providing the X-ray CT apparatus with a detecting means for detecting a static cardiac time phase with a small amount of motion artifacts in a predetermined portion of the subject based on heartbeat information acquired in association with the projection data, and an image reconstructing means for generating the tomographic image by reconstructing projection data corresponding to the static cardiac time phase detected by the detecting means.
摘要翻译：为了减少用于生成断层图像的X射线CT装置中的心脏的断层图像的伪像量，通过对X射线CT装置提供检测装置，重建通过扫描被检体的预定切片而获取的投影数据用于基于与所述投影数据相关联地获取的心跳信息来检测在所述对象的预定部分中的少量运动伪影的静态心脏时间相位;以及图像重建装置，用于通过重建与所述投影数据相对应的投影数据来生成所述断层图像由检测装置检测静态心脏时间相位。

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