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1.发明申请公开(公告)号：US20060104407A1
公开(公告)日：2006-05-18
申请号：US10990464
申请日：2004-11-18
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/432 , Y10S378/901
摘要： A method, system, and computer program product for compensating for the unavailability of projection data of a scanned object at a selected point, the selected point located outside a detection range of a detector. The method include the steps of obtaining projection data of the scanned object, and compensating for the unavailability of the projection data at the selected point based on the obtained projection data and coordinates of the selected point relative to the detector. The compensating step includes determining at least one complementary projection angle and coordinates of at least one complementary point based on a source projection angle and the coordinates of the selected point relative to the detector, and estimating the projection data value at the selected point based on the acquired projection data, the at least one complementary projection angle, and the coordinates of the at least one complementary point.
摘要翻译： 一种方法，系统和计算机程序产品，用于补偿在选定点处扫描对象的投影数据的不可用性，该选定点位于检测器的检测范围之外。 该方法包括以下步骤：基于所获得的投影数据和相对于检测器的所选点的坐标来补偿所选择的投影数据的不可用性，从而获得扫描对象的投影数据。 补偿步骤包括基于源投影角度和所选点相对于检测器的坐标来确定至少一个互补点的至少一个互补投影角度和坐标，以及基于所选择的点估计所选点处的投影数据值 所获取的投影数据，所述至少一个互补投影角以及所述至少一个互补点的坐标。
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公开(公告)号：US20060067457A1
公开(公告)日：2006-03-30
申请号：US10951650
申请日：2004-09-29
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。
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公开(公告)号：US07424088B2
公开(公告)日：2008-09-09
申请号：US10951650
申请日：2004-09-29
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。
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4.发明申请Radius-in-image dependent detector row filtering for windmill artifact reduction 审中-公开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
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。
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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
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。
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6.发明授权X-ray CT scanner with two-dimensional X-ray detector having unequal element pitch in slice-thickness direction 失效具有二维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
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。
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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.
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8.发明授权公开(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
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。
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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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10.发明授权Tilted gantry helical cone-beam Feldkamp reconstruction for multislice CT 有权用于多层CT的倾斜龙门螺旋锥束Feldkamp重建公开(公告)号：US07154986B2
公开(公告)日：2006-12-26
申请号：US11024683
申请日：2004-12-30
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/027 , G06T11/006 , Y10S378/901
摘要： An X-ray computed tomography apparatus includes a helical scanning device configured to collect projection data while at least one of a gantry and a couch moves along a body axial direction of an object on the couch when at least one of the gantry and the couch is tilted, the helical scanning device including an X-ray source configured to generate X-rays, and a detector disposed opposite the X-ray source and having detector elements arranged in a plurality of rows along the body axial direction, and a reconstructing device configured to reconstruct an image based on the projection data using cone-beam Feldkamp reconstruction.
摘要翻译： X射线计算机断层摄影装置包括螺旋扫描装置，其构造成当台架和沙发中的至少一个是台架时，收集投影数据，同时台架和沙发中的至少一个沿着床上的物体的身体轴向方向移动 所述螺旋扫描装置包括被配置为产生X射线的X射线源，以及与所述X射线源相对设置并具有沿着所述身体轴向排列成多列的检测器元件的检测器，以及配置 使用锥束Feldkamp重建基于投影数据重建图像。
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