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1. 发明专利

JP2010279427A X-ray computed tomographic system 审中-公开
标题翻译： X射线计算机图像系统
公开(公告)号：JP2010279427A
公开(公告)日：2010-12-16
申请号：JP2009133186
申请日：2009-06-02
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： AKINO SHIGEOMI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To contract a mask region to the utmost to expand a reconstitution region in the mask region reconstitution method for an X-ray CT.
SOLUTION: The X-ray CT includes an X-ray tube 101, a multi-row type X-ray detector 103, a support mechanism 102, a memory part 112 for storing a plurality of projection data sets detected by the multi-row type X-ray detector, a first reconstitution processing part 201 for reconstituting first image data according to a Feldkamp reconstitution method on the basis of a plurality of the projection data sets, a second reconstitution processing part 203 for reconstituting second image data according to a mask region reconstitution method on the basis of a plurality of the projection data sets, and a mask region setting part 209 for setting a mask region out of the target for the reconstitution processing according to the mask region reconstitution method on the basis of the absolute value sum or square sum of the difference between the first and second image data.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了在X射线CT的掩模区域重建方法中最大限度地收缩掩模区域以扩展重构区域。解决方案：X射线CT包括X射线管101，多列X射线检测器103，支撑机构102，用于存储由多重检测器检测的多个投影数据集的存储部112 第一重构处理部分201，用于根据多个投影数据集根据费尔德坎普重构方法重构第一图像数据;第二重构处理部分203，用于根据第二重构处理部分203重新构建第二图像数据; 基于多个投影数据组的掩模区域重构方法，以及掩模区域设置部分209，用于根据掩模区域重构方法，根据绝对值来设置用于重构处理的目标的掩模区域值之和或第一和第二图像数据之间的差的平方和。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010063878A X-ray computer tomography apparatus 有权
标题翻译： X射线计算机图形设备
公开(公告)号：JP2010063878A
公开(公告)日：2010-03-25
申请号：JP2009184761
申请日：2009-08-07
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： AKINO SHIGEOMI
IPC分类号： A61B6/03
CPC分类号： G06T11/008 , G06T11/006 , G06T2211/421
摘要： PROBLEM TO BE SOLVED: To improve the image quality of a masked region in a circular trajectory cone beam reconstruction method.
SOLUTION: The X-ray computer tomography apparatus comprises: an X-ray tube 101 for generating cone-shaped X ray beams; a two-dimensional array type X-ray detector 103 for detecting X rays transmitting a subject to generate projection data; a rotating mechanism 102 to support the X-ray tube in such a way as rotatable around the subject together with the X-ray detector; a reconstruction part 119 for reconstructing the full-scan image based on the projection data of the view count corresponding to one rotation out of the projection data and reconstructing the short-scan image based on the projection data of the view count less than the view count corresponding to one rotation; a CT value shift distribution generating part 121 for generating a CT value shift distribution for generating a spatial distribution of CT value shifts originating from the smaller view count based on the full-scan image and the short-scan image; and a correction part 123 for correcting the short-scan image based on the CT value shift distribution.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：在圆弧轨迹锥束重建方法中提高掩蔽区域的图像质量。解决方案：X射线计算机断层摄影装置包括：用于产生锥形X射线束的X射线管101; 二维阵列型X射线检测器103，用于检测发射对象的X射线以产生投影数据; 旋转机构102，以与X射线检测器一起围绕被检体旋转的方式支撑X射线管; 重建部分119，用于基于与投影数据中的一个旋转相对应的视图数量的投影数据重建全扫描图像，并且基于小于视图计数的视图计数的投影数据重建短扫描图像对应一个旋转; CT值偏移分布生成部121，用于生成用于基于全扫描图像和短扫描图像生成来自较小视点数的CT值偏移的空间分布的CT值偏移分布; 以及用于基于CT值偏移分布来校正短扫描图像的校正部123。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2010000240A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2010000240A
公开(公告)日：2010-01-07
申请号：JP2008161944
申请日：2008-06-20
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： AKINO SHIGEOMI , NAKANISHI SATORU , ARAKIDA KAZUMASA , OKUMURA YOSHIKAZU
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus appropriately performing correction without correcting the image quality by misidentifying contrast medium having a different composition as a bone. SOLUTION: A pretreatment section 23 in this X-ray CT apparatus detects a region where the contrast medium flows in, and a correction process section 30 corrects beam hardening from a correction component acquired on the region of the contrast medium and the region other than the contrast medium region in a subject P based on the detected contrast medium region. An image of only the correction component acquired by the beam hardening correction and an image constituted by a reconstruction process section 25 are added to provide a reconstruction image after the correction. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了通过错误地识别具有不同组成的造影剂作为骨来提供适当地执行校正而不校正图像质量的X射线CT装置。解决方案：该X射线CT装置中的预处理部23检测造影剂流入的区域，校正处理部30根据在造影剂和区域的区域取得的校正成分来校正光束硬化基于检测到的对比度介质区域，不同于对象P中的造影剂区域。添加仅通过光束硬化校正获取的校正分量的图像和由重构处理部分25构成的图像，以在校正之后提供重建图像。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2012085729A Image processor and x-ray ct apparatus 有权
标题翻译：图像处理器和X射线CT装置
公开(公告)号：JP2012085729A
公开(公告)日：2012-05-10
申请号：JP2010233518
申请日：2010-10-18
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： GOTO TAKAHIRO , AKINO SHIGEOMI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus that improves a quality of a segment image by setting each of segment phases with a small shape difference for each heart rate in consideration of the shape difference between the heart rates.SOLUTION: The X-ray CT apparatus 1 includes: a storage device for storing view data on each view, which is generated on the basis of a subject's transparent data over a plurality of heart rates, in such a manner that the view data corresponds to heart rate information; a base-line heart rate setting section 61 for setting a base-line heart rate from the plurality of heart rates, on the basis of the stored view data; a reference phase setting section 62 for setting a reference phase from a plurality of phases included in the base-line heart rate; a phase setting section 64 for setting each of the segment phases for reconstituting a segment, for each non-base-line heart rate except the base-line heart rate among the plurality of heart rates; and a segment reconstitution section 55 for performing segment reconstitution for the plurality of heart rates on the basis of the view data on the view included in a reference phase segment and the view data on the view included in the segment phase.
摘要翻译：要解决的问题：提供一种X射线CT装置，其考虑到心率之间的形状差异，通过将每个心率的每个分段相位设置为小的形状差来提高分段图像的质量。解决方案：X射线CT装置1包括：存储装置，用于存储基于多个心率的被摄体的透明数据而生成的每个视图上的视图数据，使得视图数据对应于心率信息; 基线心率设定部61，用于根据存储的观看数据，从多个心率设定基线心率; 参考相位设定部分62，用于从包括在基线心率中的多个相位设置参考相位; 相位设定单元64，用于对于多个心率之外的除了基线心率之外的每个非基线心率，设定用于重建段的每个段相位; 以及片段重构部分55，用于基于包括在参考相位片段中的视图的视图数据和包括在片段相位中的视图的视图数据，执行针对多个心率的片段重组。版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2010042096A X-ray computed tomography apparatus 审中-公开
标题翻译： X射线计算机图像设备
公开(公告)号：JP2010042096A
公开(公告)日：2010-02-25
申请号：JP2008207019
申请日：2008-08-11
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： AKINO SHIGEOMI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To reconstruct a mask region while suppressing a possibility of deteriorating strain-shape reproducibility in a circular-orbit cone-beam reconstruction method.
SOLUTION: This X-ray computed tomography apparatus includes an X-ray tube 101 generating cone-beam-shaped X rays, a two-dimensional array-type X-ray detector 103 detecting the X rays transmitting through a subject to generate projection data, a rotary mechanism 102 rotating the X-ray tube around the circumference of the subject along with the X-ray detector, a reconstruction processing section 119 reconstructing image data using a reconstruction area as an object based on the projection data, and a projection data selection section 117 which selects the projection data for use in the reconstruction for changing a view number of the projection data used for the reconstruction of the image data in both ends of the reconstruction area according to the reconstruction position on the rotary shaft.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：重建掩模区域同时抑制在圆轨道锥束重建方法中使应变形再现性恶化的可能性。解决方案：该X射线计算机断层摄影装置包括产生锥形束X射线的X射线管101，二维阵列型X射线检测器103，检测通过对象发射的X射线以产生投影数据，将X射线管与X射线检测器一起围绕被检体的周围旋转的旋转机构102，使用基于投影数据的重建区域作为对象重建图像数据的重建处理部119，以及投影数据选择部117，其根据旋转轴上的重建位置，选择重建中使用的投影数据，以改变用于重建重建区域的两端的图像数据的投影数据的视图数。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009045449A 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：JP2009045449A
公开(公告)日：2009-03-05
申请号：JP2008188980
申请日：2008-07-22
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： HORIUCHI TETSUYA , NAKANISHI SATORU , AKINO SHIGEOMI
IPC分类号： A61B6/03 , G06T1/00 , G06T5/20
CPC分类号： A61B6/032 , G06T11/006 , G06T2211/421 , G06T2211/432
摘要： PROBLEM TO BE SOLVED: To suppress cone beam artifacts to the level of full reconstruction while maintaining the time resolution in half reconstruction. SOLUTION: The X-ray computed tomography apparatus includes a gantry 100, reconstruction processing units 117, 118 which generates first volume data on the basis of a projection data set which covers an angle range of 180°+fan angle and also generates second volume data on the basis of a projection data set which covers an angle range of 360°, a correction data generating unit 119 which generates correction data for reducing a cone beam artifact on the basis of a difference between the first volume data and the second volume data, and a correction unit 120 which corrects the first volume data on the basis of the correction data. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：将锥束伪影抑制到完全重建的水平，同时在半重建中保持时间分辨率。解决方案：X射线计算机断层摄影装置包括台架100，重建处理单元117,118，其基于覆盖180°+角度范围的角度范围的投影数据集产生第一体积数据，并且还产生基于覆盖360°的角度范围的投影数据组的第二体积数据;校正数据生成单元119，其根据第一体积数据和第二体积数据之间的差产生用于减少锥束伪影的校正数据; 音量数据，以及基于校正数据校正第一音量数据的校正单元120。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2008220653A X-ray ct apparatus, method for estimating outline of subject and method for reconstituting image 审中-公开
标题翻译： X射线CT装置，用于估计主题的方法和重建图像的方法
公开(公告)号：JP2008220653A
公开(公告)日：2008-09-25
申请号：JP2007063450
申请日：2007-03-13
申请人： Toshiba Corp , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社 , 株式会社東芝
发明人： AKINO SHIGEOMI , NAKANISHI SATORU , HORIUCHI TETSUYA
IPC分类号： A61B6/03
CPC分类号： G06T11/005 , A61B6/03 , G06T7/564 , G06T2207/10116
摘要： PROBLEM TO BE SOLVED: To provide a technique for estimating an outline which precisely calculates an outline of a subject during a real scanning and improves real-time property during image reconstitution, and also to provide a technique for reconstituting an image which reconstitutes an image of good quality on the basis of the calculated outline.
SOLUTION: X-ray transmission data of a specific direction is extracted from X-ray transmission data obtained by rotating an X-ray tube irradiating an X-ray around a subject. The outline of the subject is then calculated on the basis of the X-ray transmission data of the specific direction. The X-ray transmission data are corrected on the basis of this outline, and an image of the inside of the subject is reconstructed from the corrected X-ray transmission data.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于估计在真实扫描期间精确计算对象的轮廓并提高图像重构期间的实时性的轮廓的技术，并且还提供一种用于重构重建的图像的技术在计算大纲的基础上形成质量好的图像。解决方案：从通过旋转照射被检体周围的X射线的X射线管获得的X射线透射数据中提取特定方向的X射线透射数据。然后基于特定方向的X射线透射数据来计算被检体的轮廓。基于该轮廓校正X射线透射数据，并且从校正的X射线透射数据重建对象的内部的图像。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2014061278A X-ray ct device 有权
标题翻译： X射线CT设备
公开(公告)号：JP2014061278A
公开(公告)日：2014-04-10
申请号：JP2013177495
申请日：2013-08-29
申请人： Toshiba Corp , 株式会社東芝 , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社
发明人： NAKANISHI SATORU , AKINO SHIGEOMI , UEBAYASHI YOSHINORI , GOTO TAKAHIRO
IPC分类号： A61B6/03
CPC分类号： A61B6/54 , A61B6/032 , A61B6/5205 , A61B6/5241 , A61B6/541 , G06T11/005 , G06T11/006 , G06T2207/20004 , G06T2211/412
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT device capable of easily determining a reconstruction method according to a photographing condition.SOLUTION: An X-ray CT device includes an irradiation part for irradiating an analyte with an X-ray, a detection part for detecting the X-ray that has transmitted the analyte, and a rotation part for rotating the irradiation part and the detection part around the analyte, and generates an image by performing synchronous photography upon receipt of a biological signal of the analyte. The X-ray CT device also includes a storage part, a calculation part, a determination part, and a processing part. The storage part stores a predetermined threshold beforehand. The calculation part calculates an amount of detection data in which the amount of detection data detected by the detection part is represented by the number of rotations of the rotation part based on the photographing condition related to the synchronous photography. The determination part determines reconstruction processing to be applied to the detection data based on the amount of detection data by the calculation part and the threshold by the storage part. The processing part subjects the detection data to the reconstruction processing determined by the determination part, and generates an image.
摘要翻译：要解决的问题：提供一种能够根据拍摄条件容易地确定重建方法的X射线CT装置。解决方案：X射线CT装置包括用于用X射线照射分析物的照射部分，检测用于检测已经透射分析物的X射线的部分，以及用于旋转分析物周围的照射部分和检测部分的旋转部分，并且在接收到分析物的生物信号时进行同步摄影来生成图像。 X射线CT装置还包括存储部分，计算部分，确定部分和处理部分。存储部件预先存储预定阈值。计算部分基于与同步摄影相关的拍摄条件，计算由检测部分检测的检测数据量由旋转部分的转数表示的检测数据量。确定部分基于计算部分的检测数据量和存储部分来确定要应用于检测数据的重建处理。处理部使检测数据进行由确定部确定的重建处理，并生成图像。

9. 发明专利

JP2013099700A X-ray computed tomography apparatus, reconstruction processing apparatus, and image processing apparatus 有权
标题翻译： X射线计算机图像设备，重建处理设备和图像处理设备
公开(公告)号：JP2013099700A
公开(公告)日：2013-05-23
申请号：JP2013047086
申请日：2013-03-08
申请人： Toshiba Corp , 株式会社東芝 , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社
发明人： NAKANISHI SATORU , AKINO SHIGEOMI
IPC分类号： A61B6/03
CPC分类号： G06T11/008
摘要： PROBLEM TO BE SOLVED: To provide an X-ray computed tomography apparatus capable of approximately reducing a cone beam artifact, and to provide a reconstruction processing apparatus, and an image processing apparatus.SOLUTION: This X-ray computed tomography apparatus generates reference volume data on the basis of projection data collected by scanning a subject with cone beam X rays. This apparatus extracts a cone beam artifact component contained in the reference volume data on the basis of the shape and direction that are specific to the cone beam artifact. This apparatus generates resultant volume data with the reduced cone beam artifact by subtracting the cone beam artifact component from the reference volume data.
摘要翻译：要解决的问题：提供能够大大减少锥束伪影的X射线计算机断层摄影装置，以及提供重建处理装置和图像处理装置。解决方案：该X射线计算机断层摄影装置基于通过用锥束X射线扫描对象而收集的投影数据产生参考体积数据。该装置基于特定于锥形束伪影的形状和方向提取包含在参考体积数据中的锥形束伪影分量。该装置通过从参考体积数据中减去锥束伪影分量来产生具有减小的锥束伪影的合成体数据。版权所有（C）2013，JPO＆INPIT

10. 发明专利

JP2013005949A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2013005949A
公开(公告)日：2013-01-10
申请号：JP2011141209
申请日：2011-06-24
申请人： Toshiba Corp , 株式会社東芝 , Toshiba Medical Systems Corp , 東芝メディカルシステムズ株式会社
发明人： UEBAYASHI YOSHINORI , NAKANISHI SATORU , AKINO SHIGEOMI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To reduce cone beam artifacts more than before.SOLUTION: In one embodiment, an X-ray CT apparatus includes an extraction processing part, a direction determination part, a correction amount adjustment part, and an image generation part. The extraction processing part extracts a bone region of a high X-ray absorption rate as a high absorption region from image data generated before main scanning. The direction determination part determines a straight line indicating the direction of the high absorption region as a direction line, on the basis of input information or the shape of the high absorption region. The correction amount adjustment part calculates the inclination angle of the advancing direction of a cone beam X-ray in the main scanning and the direction line, and adjusts the correction amount of correction processing of the cone beam artifact on the basis of the inclination angle. The image generation part detects the cone beam X-ray which a subject has transmitted in the main scanning, collects projection data on the basis of detection signals, and executes reconstruction processing and the correction processing based on the adjusted correction amount to the projection data to generate the image data.
摘要翻译：要解决的问题：比以前更多地减少锥束伪影。解决方案：在一个实施例中，X射线CT装置包括提取处理部分，方向确定部分，校正量调节部分和图像生成部分。提取处理部分从主扫描之前产生的图像数据中提取具有高吸收率的高X射线吸收率的骨区域。方向确定部分基于输入信息或高吸收区域的形状来确定表示高吸收区域的方向的直线作为方向线。校正量调节部分计算主扫描和方向线上的锥形束X射线的前进方向的倾斜角度，并且基于倾斜角度来调整锥形束伪影的校正处理的校正量。图像生成部检测被检体在主扫描中发送的锥形束X射线，基于检测信号收集投影数据，并且根据对投影数据的调整后的校正量执行重建处理和校正处理，生成图像数据。版权所有（C）2013，JPO＆INPIT

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