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1. 发明授权

US6157696A X-ray CT scanner with two-dimensional X-ray detector having unequal element pitch in slice-thickness direction 失效
标题翻译：具有二维X射线检测器的X射线CT扫描仪在切片厚度方向上具有不等间距
公开(公告)号：US6157696A
公开(公告)日：2000-12-05
申请号：US891709
申请日：1997-07-09
申请人： Yasuo Saito , Kazuyuki Ihira , Katsuyuki Taguchi , Tatsuro Suzuki , Hiroaki Miyazaki , Koichi Muraki , Hiroshi Aradate
发明人： Yasuo Saito , Kazuyuki Ihira , Katsuyuki Taguchi , Tatsuro Suzuki , Hiroaki Miyazaki , Koichi Muraki , Hiroshi Aradate
IPC分类号： A61B6/03 , H05G1/60
CPC分类号： A61B6/5205 , A61B6/032 , A61B6/583
摘要： A multi-slice X-ray CT scanner is provided to realize high resolution and a wide scanned region in a slice-thickness direction for an object. In the X-ray CT scanner, an X-ray beam for slice imaging is radiated toward an object and scanned in a predetermined slice-thickness direction, a direction orthogonal to the slice-thickness direction being defined as a channel direction. The scanner comprises a two-dimensional X-ray detector, a data acquisition system, and an electrically combining unit. The detector has a plurality of X-ray detecting elements arranged in a two-dimensional array of both rows in the slice-thickness direction and columns in the channel direction, the detecting elements of each row being arranged in unequal pitches. The data acquisition system has a plurality of data acquiring elements arranged in a two-dimensional array of rows and columns, acquiring signals detected by the two-dimensional X-ray detector, and producing digital data proportional to the detected signals. The electrically combining unit electrically combines more than two columns of all the columns in the array of the X-ray detecting elements into at least two columns of all the columns in the array of the data acquiring elements in accordance with a given slice imaging condition. For example, each row of the array of the data acquiring elements are less in number of elements than each row of the array of the X-ray detecting elements.
摘要翻译：提供了一种多切片X射线CT扫描器，以实现对于物体的切片厚度方向的高分辨率和宽扫描区域。在X射线CT扫描器中，将用于切片成像的X射线束朝向物体照射，并且以预定的切片厚度方向扫描，与切片厚度方向正交的方向被定义为通道方向。扫描仪包括二维X射线检测器，数据采集系统和电合成单元。检测器具有多个X射线检测元件，其排列成层厚方向的两列的二维阵列，并且在通道方向上具有列，每行的检测元件以不等间距排列。数据采集系统具有排列成行和列的二维阵列的多个数据获取元件，获取由二维X射线检测器检测的信号，并产生与检测信号成比例的数字数据。电合成单元根据给定的切片成像条件将X射线检测元件的阵列中的所有列的两列以上的列全部电合成数据获取元件的阵列中的所有列的至少两列。例如，数据获取元件的阵列的每行比X射线检测元件的阵列的每一行的元素数量少。

2. 发明授权

US06215843B1 X-ray CT scanner using X-ray detector acquiring multi-slice data of unequal slice pitches 失效
标题翻译： X射线CT扫描仪使用X射线检测器获取不等切片间距的多切片数据
公开(公告)号：US06215843B1
公开(公告)日：2001-04-10
申请号：US08960594
申请日：1997-10-30
申请人： Yasuo Saito , Katsuyuki Taguchi , Hiroshi Aradate
发明人： Yasuo Saito , Katsuyuki Taguchi , Hiroshi Aradate
IPC分类号： G01N2300
CPC分类号： G01N23/046 , G01N2223/419 , G01N2223/612
摘要： An X-ray CT scanner for producing a CT image of a subject by scanning an X-ray fan beam radiated an X-ray source through the subject in a predetermined slice-thickness direction. The scanner comprises a main detector detecting the X-ray beam to produce an X-ray transmission data of a subject and to a plurality of slices in agreement with unequal segment pitches. The detector comprises a two-dimensional array consisting of a plurality of X-ray detecting elements receiving the X-ray beam and being disposed in the slice-thickness direction as a row line and a channel direction as a column line. The X-ray detection sensitivity distributions of all the segments formed by the detecting elements disposed in predetermined element pitches in the slice-thickness direction are adjusted to be uniform or approximately uniform by controlling various members, devices, or factors which are all controllable for X-ray detection sensitivity, thereby enabling the X-ray transmission data of unequal slice thicknesses to be adjusted in sensitivity slice by slice in the detector. The scanner further comprises a switch group selecting and combining the sensitivity-adjusted X-ray transmission data of the plurality of slices, the selected and combined X-ray transmission data being provided to selected ones of a data acquiring elements of a data acquisition system.
摘要翻译：一种X射线CT扫描器，用于通过扫描X射线扇形束，以预定的切片厚度方向通过对象辐射X射线源来产生被摄体的CT图像。扫描仪包括检测X射线束的主检测器，以产生与受试者的X射线透射数据以及与不相等的段间距一致的多个切片。检测器包括由接收X射线束的多个X射线检测元件构成的二维阵列，并且以切片厚度方向设置为行线，并且将通道方向设置为列线。通过控制各种成分，装置或对X均可控的因素，将由设置在切片厚度方向上的预定元件间距的检测元件形成的所有片段的X射线检测灵敏度分布调整为均匀或近似均匀检测灵敏度，从而使得能够在检测器中逐层地灵敏地调整不等切片厚度的X射线透射数据。所述扫描器还包括选择并组合所述多个切片中的灵敏度调整的X射线透射数据的开关组，所选择的和组合的X射线透射数据被提供给数据采集系统的数据获取元件中的选定的一个。

3. 发明授权

US06546067B2 Reconstruction and scan of 4D-CT 有权
公开(公告)号：US06546067B2
公开(公告)日：2003-04-08
申请号：US09771592
申请日：2001-01-30
申请人： Hiroshi Aradate , Yasuo Saito , Katsuyuki Taguchi
发明人： Hiroshi Aradate , Yasuo Saito , Katsuyuki Taguchi
IPC分类号： A61B603
CPC分类号： G06T11/005 , A61B6/027 , A61B6/032 , A61B6/4085 , G06T2211/412 , Y10S378/901
摘要： A method, system, and computer-readable medium that can resolve continuous and/or relatively rapid changes with time of a volume V without deterioration in image quality. In one embodiment of this invention, a subset of the projection data collected along a continuous circular orbit is combined with projection data collected along a different orbit to reconstruct the volume V substantially as it was when the subset of the projection data was collected. In one embodiment, the different orbit is a linear or a helical orbit. Further, staggered subsets of the projection data collected along a continuous circular orbit can also be used, as can further projection data collected along a linear orbit to resolve continuous and/or relatively rapid changes of a volume V.

4. 发明授权

US5974108A X-ray CT scanning apparatus 失效
标题翻译： X射线CT扫描仪
公开(公告)号：US5974108A
公开(公告)日：1999-10-26
申请号：US773324
申请日：1996-12-24
申请人： Katsuyuki Taguchi , Hiroshi Aradate
发明人： Katsuyuki Taguchi , Hiroshi Aradate
IPC分类号： G06T11/00 , A61B6/03
CPC分类号： G06T11/005 , A61B6/027 , Y10S378/901
摘要： An X-ray CT scanning apparatus comprises an X-ray source for irradiating a beam of X-ray to an object to be examined, a detector provided with at least two rows of detector elements for detecting the X-ray beam to have a real data, and a couch driver for traveling in an axial direction of the body of the object a couch on which the object is placed, in which the X-ray beam being irradiated from the X-ray source which is being rotated and simultaneously, the couch being traveled with the couch driver, the object is scanned in a helical direction so that the real data sampled by the detector is not identical in the sweep pattern to its opposite data. Two data located on both sides of the target slicing location may be selected from groups of the real data and their opposite data sampled by the detector and used to interpolate a data at the target slicing location. The group of the real data and their opposite data sampled by the detector may be filtered in the direction of slices to produce a desired data at the target slicing location. Also, a combination of the above three methods can be implemented.
摘要翻译： X射线CT扫描装置包括用于将X射线束照射到待检查对象的X射线源，设置有至少两行检测器元件的检测器，用于检测X射线束以具有真实的数据和用于在物体的轴向方向上行进的沙发驱动器，其上放置有物体的沙发，其中X射线束从正在旋转的X射线源照射，同时，沙发与沙发驾驶员一起旅行，物体沿螺旋方向扫描，使得检测器采样的实际数据在扫描模式与其相反的数据不相同。位于目标切片位置两侧的两个数据可以从实际数据组和由检测器采样的相反数据的组中选择，并用于在目标切片位置内插数据。可以在切片的方向上对由检测器采样的真实数据及其相反数据的组进行滤波，以在目标切片位置产生所需数据。此外，可以实现上述三种方法的组合。

5. 发明授权

US07424088B2 Image reconstruction method using Hilbert transform 有权
标题翻译：使用希尔伯特变换的图像重建方法
公开(公告)号：US07424088B2
公开(公告)日：2008-09-09
申请号：US10951650
申请日：2004-09-29
申请人： Aleksandr A. Zamyatin , Katsuyuki Taguchi
发明人： Aleksandr A. Zamyatin , Katsuyuki Taguchi
IPC分类号： A61B6/03
CPC分类号： G06T11/005 , A61B6/027 , Y10S378/901
摘要： A method of determining an image data value at a point of reconstruction in a computed tomography (CT) image of a scanned object, including obtaining projection data of the scanned object, filtering the obtained projection data with a one-dimensional ramp filter to generate ramp-filtered data, and applying a backprojection operator with inverse distance weighting to the ramp-filtered data to generate the image data value at the point of reconstruction in the CT image.
摘要翻译：一种确定扫描对象的计算机断层摄影（CT）图像中的重建点处的图像数据值的方法，包括获得扫描对象的投影数据，用一维斜坡滤波器对获得的投影数据进行滤波以产生斜坡过滤的数据，以及将具有反距离加权的反投影算子应用于斜坡滤波数据，以在CT图像中的重构点生成图像数据值。

6. 发明申请

US20050226365A1 Radius-in-image dependent detector row filtering for windmill artifact reduction 审中-公开
标题翻译：半径图像相关检测器行滤波，用于风车神器减少
公开(公告)号：US20050226365A1
公开(公告)日：2005-10-13
申请号：US10812187
申请日：2004-03-30
申请人： Katsuyuki Taguchi
发明人： Katsuyuki Taguchi
IPC分类号： A61B6/00 , A61B6/03 , G01N23/00 , G01N23/04 , G21K1/12 , H05G1/60
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4021 , G01N23/046 , G01N2223/419
摘要： A method, X-ray CT apparatus, and computer program product for obtaining data from a computed tomography (CT) scan, wherein projection data are obtained from at least two detector rows in a CT system, the projection data are filtered in a direction of the at least two detector rows to obtain filtered data in which windmill artifacts are reduced, and the filtered data are reconstructed.
摘要翻译：一种用于从计算机断层摄影（CT）扫描获得数据的方法，X射线CT装置和计算机程序产品，其中从CT系统中的至少两个检测器行获得投影数据，投影数据在所述至少两个检测器行以获得其中减少风车伪影的滤波数据，并重构滤波数据。

7. 发明授权

US06466640B1 Computed tomography system and method 有权
标题翻译：计算机断层扫描系统和方法
公开(公告)号：US06466640B1
公开(公告)日：2002-10-15
申请号：US09450121
申请日：1999-11-26
申请人： Katsuyuki Taguchi
发明人： Katsuyuki Taguchi
IPC分类号： A61B603
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/542 , A61B6/583 , Y10S378/901
摘要： Method and system for computed tomography. Data is collected by irradiating a subject with x-rays. The data is interpolated and then weighted based upon the data collection time. The interpolated and weighted data is then used to reconstruct the image using fan beam reconstruction. The weighting function may by shifted in time. Signals may be obtained from the subject and used to control exposure, reduce the dose and provide automatic volumetric cardiac reconstruction. The method and system can increase the temporal and spatial resolution, and reconstruct images at different timing.
摘要翻译：计算机断层扫描的方法和系统。通过用X射线照射受试者来收集数据。数据内插，然后根据数据收集时间加权。然后使用内插和加权数据来重建使用扇形束重构的图像。加权函数可能会在时间上移位。信号可以从受试者获得并用于控制暴露，减少剂量并提供自动体积心脏重建。该方法和系统可以增加时间和空间分辨率，并在不同的时间重建图像。

8. 发明授权

US4873590A Magnetic recording and reproducing apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US4873590A
公开(公告)日：1989-10-10
申请号：US162102
申请日：1988-02-29
申请人： Tetsuo Ishiwata , Katsuyuki Taguchi
发明人： Tetsuo Ishiwata , Katsuyuki Taguchi
IPC分类号： G11B15/02 , G11B15/093 , G11B15/44 , G11B15/48
CPC分类号： G11B15/02 , G11B15/093 , G11B15/442
摘要： A magnetic recording and reproducing apparatus includes a control device for monitoring a take-up reel, a feed reel, and a capstan motor for rotational speed and direction. By monitoring the take-up reel, feed reel and capstan motor, the control device determines if the apparatus is operating properly. Based on the determinations regarding the proper operation of the apparatus, the control device controls the operation of the capstan motor and the shifting of the idler gear between a first operational state and a second idle state.

9. 发明授权

US09514550B2 Methods for motion compensated image reconstruction and system related thereto 有权
标题翻译：运动补偿图像重建方法及其相关系统
公开(公告)号：US09514550B2
公开(公告)日：2016-12-06
申请号：US12452089
申请日：2008-06-16
申请人： Katsuyuki Taguchi , Hiroyuki Kudo
发明人： Katsuyuki Taguchi , Hiroyuki Kudo
IPC分类号： A61B6/00 , G06T11/00 , A61B6/03
CPC分类号： G06T11/006 , A61B6/03 , A61B6/037 , A61B6/5264 , G06T2211/412
摘要： Featured are methods for reconstruction of images acquired from any of a number of scanning devices or apparatuses known to those skilled in the art which methods are established so as to provide a mechanism for compensating for motion of an object being imaged. Such methods of the present invention are such as to allow the clinician to select one or more specific methodologies that is appropriate for the expected motion, severity or complexity of the motion and efficient processing of projection data. Also feature are systems, apparatuses, software code and computer readable media which embody such methodologies.
摘要翻译：特征是用于重建从本领域技术人员已知的多个扫描装置或装置中的任何一个获取的图像的方法，其中建立了这些方法，以便提供用于补偿被成像对象的运动的机构。本发明的这种方法使得临床医生能够选择一种或多种适用于预期运动，运动的严重性或复杂性以及投影数据的有效处理的具体方法。还具有体现这种方法的系统，装置，软件代码和计算机可读介质。

10. 再颁专利

USRE43272E1 X-ray computerized tomographic apparatus 有权
标题翻译： X线计算机断层摄影仪
公开(公告)号：USRE43272E1
公开(公告)日：2012-03-27
申请号：US11165553
申请日：2005-06-24
申请人： Katsuyuki Taguchi
发明人： Katsuyuki Taguchi
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4233 , G01N23/046 , G01N2223/419 , G06T11/005 , Y10S378/901
摘要： An X-ray computerized tomographic apparatus includes an X-ray tube device configured to irradiate an object to be examined with a pyramidal X-ray beam, a detector which has a plurality of detecting elements arrayed in a slice direction in which X-rays transmitted through the object are detected, a data extending unit which creates virtual data corresponding to an extension region located outside a region in which the detecting elements are arranged in the slice direction on the basis of real data detected by the detecting element, and a reconstructing unit which reconstructs image data on the basis of the real data and virtual data.
摘要翻译： X射线计算机断层摄影装置包括被配置为用金字塔形X射线束照射待检查物体的X射线管装置，具有多个检测元件的检测器，所述检测元件沿X射线透射的切片方向排列通过检测对象检测出数据扩展单元，该数据扩展单元基于由检测元件检测到的实际数据，创建对应于位于检测元件沿切片方向布置的区域之外的扩展区域的虚拟数据;以及重建单元其基于真实数据和虚拟数据重建图像数据。

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