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1. 发明申请

US20070110210A1 X-RAY CT APPARATUS AND X-RAY CT FLUOROSCOPIC APPARATUS 审中-公开
标题翻译： X射线CT装置和X射线CT荧光装置
公开(公告)号：US20070110210A1
公开(公告)日：2007-05-17
申请号：US11559494
申请日：2006-11-14
申请人： Akihiko Nishide , Naoyuki Kawachi , Akira Izuhara , Makoto Gohno , Motoki Watanabe
发明人： Akihiko Nishide , Naoyuki Kawachi , Akira Izuhara , Makoto Gohno , Motoki Watanabe
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085
摘要： Tomography or X-ray CT fluoroscopy reduced in exposure to radiation in an X-ray CT apparatus or an X-ray CT fluoroscopic apparatus is to be substantialized. A channel-direction X-ray collimator or a beam forming X-ray filter is positionally controlled in the channel direction to carry out X-ray data acquisition while irradiation with X-rays limited to only the region of interest. Either the profile area of the whole subject is obtained or the profile area of the whole subject is predicted from views or scout images of irradiation of the whole subject out of X-ray projection data. Image reconstruction of views not irradiating the whole subject out of the collected X-ray projection data is carried out by predicting lacking parts from the profile area of the whole subject and making corrections accordingly. It is thereby made possible to irradiate only the region of interest with X-rays to reduce the exposure of the subject of tomography by the X-ray CT apparatus to X-rays or the exposure the subject to X-rays and the exposure of the operator's hands to radiation at the time of puncturing in X-ray CT fluoroscopy.
摘要翻译： X射线CT装置或X射线CT荧光检查装置中的放射线照射减少的层析成像术或X射线CT透视图被实质化。在通道方向上位置地控制通道方向X射线准直仪或束形成X射线滤波器，以在仅限于感兴趣区域的X射线的照射下进行X射线数据采集。获得整个被摄体的轮廓区域，或者通过X射线投影数据从整个被摄体的照射的视图或侦察图像中预测整个被摄体的轮廓区域。通过从整个被摄体的轮廓区域预测缺少的部分并进行相应的校正来进行从收集的X射线投影数据中不照射整个被摄体的视图的图像重建。由此，能够仅利用X射线照射感兴趣区域，以将X射线CT装置的X线摄影对象的X射线照射或X射线照射，手术时用X射线CT透视时穿刺手术。

2. 发明申请

US20070019779A1 X-ray CT apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：US20070019779A1
公开(公告)日：2007-01-25
申请号：US11489065
申请日：2006-07-19
申请人： Akihiko Nishide , Naoyuki Kawachi
发明人： Akihiko Nishide , Naoyuki Kawachi
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/5205 , A61B6/027 , A61B6/032
摘要： A data acquisition device, which has an X-ray detector including a plurality of channel widths at which channels at its central portion are fine and channels at its peripheral portions are coarse or rough, and a plurality of data acquisition ranges including a data acquisition range wide in a channel direction and a data acquisition range narrow in the channel direction, and which is capable of performing switching among the data acquisition ranges for each data acquisition, is used to perform data acquisition on the channels fine at the central portion in the data acquisition range narrow in the channel direction, whereby an X-ray CT apparatus is provided which is capable of performing high-resolution imaging and brings about more satisfactory image quality.
摘要翻译：一种数据采集装置，其具有X射线检测器，该X射线检测器包括多个通道宽度，其中心部分处的通道精细，其周边部分的通道粗糙或粗糙;多个数据采集范围包括数据采集范围在信道方向上宽的数据采集范围和在信道方向上窄的数据采集范围，并且能够在每个数据采集的数据采集范围之间进行切换，用于在数据的中心部分处精细地对信道执行数据采集获取范围在通道方向上窄，由此提供能够执行高分辨率成像并且带来更令人满意的图像质量的X射线CT装置。

3. 发明授权

US07522695B2 X-ray CT apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：US07522695B2
公开(公告)日：2009-04-21
申请号：US11489065
申请日：2006-07-19
申请人： Akihiko Nishide , Naoyuki Kawachi
发明人： Akihiko Nishide , Naoyuki Kawachi
IPC分类号： G21N23/083 , H05G1/38
CPC分类号： A61B6/5205 , A61B6/027 , A61B6/032
摘要： A data acquisition device, which has an X-ray detector including a plurality of channel widths at which channels at its central portion are fine and channels at its peripheral portions are coarse or rough, and a plurality of data acquisition ranges including a data acquisition range wide in a channel direction and a data acquisition range narrow in the channel direction, and which is capable of performing switching among the data acquisition ranges for each data acquisition, is used to perform data acquisition on the channels fine at the central portion in the data acquisition range narrow in the channel direction, whereby an X-ray CT apparatus is provided which is capable of performing high-resolution imaging and brings about more satisfactory image quality.
摘要翻译：一种数据采集装置，其具有X射线检测器，该X射线检测器包括多个通道宽度，其中心部分处的通道精细，其周边部分的通道粗糙或粗糙;多个数据采集范围包括数据采集范围在信道方向上宽的数据采集范围和在信道方向上窄的数据采集范围，并且能够在每个数据采集的数据采集范围之间进行切换，用于在数据的中心部分处精细地对信道执行数据采集获取范围在通道方向上窄，由此提供能够执行高分辨率成像并且带来更令人满意的图像质量的X射线CT装置。

4. 发明授权

US07623615B2 X-ray CT image reconstruction method and X-ray CT system 失效
标题翻译： X射线CT图像重建方法和X射线CT系统
公开(公告)号：US07623615B2
公开(公告)日：2009-11-24
申请号：US11436815
申请日：2006-05-18
申请人： Naoyuki Kawachi , Tetsuya Horiuchi
发明人： Naoyuki Kawachi , Tetsuya Horiuchi
IPC分类号： A61B6/00
CPC分类号： G01N23/046 , A61B6/583 , G01N2223/419 , G01N2223/42 , G01N2223/612
摘要： An X-ray CT image reconstruction method includes turning a fan-shaped X-ray beam, which is thick and irradiated to a subject, about the subject, detecting projection data items concerning an X-ray beam, which is transmitted by the subject, with the X-ray beam turned by a plurality of successive angles of rotation, enhancing fan-beam data, which includes projection data items detected with the X-ray beam turned by the angles of rotation, so as to sharpen projection data contained in the fan-beam data and acquired along each projection line, producing parallel-beam data, which has values thereof defined along parallel projection lines, in relation to each angle of projection using the enhanced fan-beam data, and reconstructing an image using the parallel-beam data.
摘要翻译： X射线CT图像重建方法包括使关于被摄体的厚并照射到被摄体的扇形X射线束转动，检测由被检体发送的关于X射线束的投影数据项目，其中所述X射线束被多个相继的旋转角度转动，从而增强扇形束数据，其包括用旋转角度转动的X射线束检测到的投影数据项，以便锐化包含在扇形光束数据并且沿着每个投影线获取，产生平行光束数据，其平行光束数据相对于使用增强扇形光束数据的每个投射角度沿着平行投影线定义，并且使用并行光束数据重建图像，光束数据。

5. 发明申请

US20060262895A1 X-ray CT image reconstruction method and X-ray CT system 失效
标题翻译： X射线CT图像重建方法和X射线CT系统
公开(公告)号：US20060262895A1
公开(公告)日：2006-11-23
申请号：US11436815
申请日：2006-05-18
申请人： Naoyuki Kawachi , Tetsuya Horiuchi
发明人： Naoyuki Kawachi , Tetsuya Horiuchi
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01N23/046 , A61B6/583 , G01N2223/419 , G01N2223/42 , G01N2223/612
摘要： An X-ray CT image reconstruction method includes turning a fan-shaped X-ray beam, which is thick and irradiated to a subject, about a subject, detecting projection data items concerning an X-ray beam, which is transmitted by the subject, with the X-ray beam turned by a plurality of successive angles of rotation, enhancing fan-beam data, which includes projection data items detected with the X-ray beam turned by the angles of rotation, so as to sharpen projection data contained in the fan-beam data and acquired along each projection line, producing parallel-beam data, which values thereof defined along parallel projection lines, in relation to each angle of projection using the enhanced fan-beam data, and reconstructing an image using the parallel-beam data.
摘要翻译： X射线CT图像重建方法包括：对被摄体进行相对于被检体厚的照射的扇形X射线束，检测由被检体发送的X射线束的投影数据，其中所述X射线束被多个相继的旋转角度转动，从而增强扇形束数据，其包括用旋转角度转动的X射线束检测到的投影数据项，以便锐化包含在扇形光束数据并且沿着每个投影线获取，产生平行光束数据，其平均投影线中的值相对于使用增强扇形光束数据的每个投影角度而定义，并且使用平行光束重建图像数据。

6. 发明授权

US06829325B2 X-ray CT apparatus and processing method therefor 失效
标题翻译： X射线CT装置及其处理方法
公开(公告)号：US06829325B2
公开(公告)日：2004-12-07
申请号：US10319354
申请日：2002-12-13
申请人： Koichi Shida , Naoyuki Kawachi
发明人： Koichi Shida , Naoyuki Kawachi
IPC分类号： A61B603
CPC分类号： G06T11/005 , A61B6/032 , Y10S378/901
摘要： With the object of improving image quality while keeping short the time taken to reconstruct the first X-ray tomogram at the time of start of scanning in its real-time display mode, an X-ray CT apparatus having a rotary unit for causing an X-ray source and an X-ray detector for detecting X-rays from the X-ray source to rotate integrally around a subject, is provided with a full data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a full turn around the subject, a segment data reconstructing device for reconstructing tomograms on the basis of penetrating X-ray data of each view detected during a turn by (180+&agr;) degrees, and a change-over device for counting the tomograms reconstructed after the start of scanning, and changing over between the full data reconstructing device and segment data reconstructing device according to the count.
摘要翻译：为了在实时显示模式下扫描开始时保持缩短重构第一X射线断层图像所花费的时间的目的，提供一种具有旋转单元的X射线CT装置，其用于使X 射线源和用于检测来自X射线源的X射线以及围绕被摄体整体旋转的X射线检测器，设置有用于根据每个视图的穿透X射线数据重建断层图像的完整数据重建装置在整个旋转周期期间检测到的段数据重建装置，用于基于在转弯（180±α）度期间检测到的每个视图的穿透X射线数据来重建断层图像，以及用于计数扫描开始后重建的断层图像，并根据计数在全数据重建装置和段数据重建装置之间切换。

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