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。

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.

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。

公开(公告)号：US5583903A

公开(公告)日：1996-12-10

申请号：US566158

申请日：1995-12-01

申请人： Yasuo Saito ,  Kazuyuki Ihira ,  Hiroaki Miyazaki

发明人： Yasuo Saito ,  Kazuyuki Ihira ,  Hiroaki Miyazaki

IPC分类号： A61B6/03 ,  G01N23/04 ,  G01N23/083

CPC分类号： A61B6/032 ,  A61B6/4021 ,  A61B6/4085 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

摘要： In a computed tomography apparatus which irradiates an X-ray ray fan beam to a slice of a subject body from various directions around the slice, detects the image data of the X-ray ray that has passed the subject body to obtain projection data, and performs reconstruction computation on the projection data to acquire the tomographic image of the slice of the subject body, a main detector which has a plurality of rows of detection elements are aligned in association with a plurality of slices of the subject body and detects projection data of a plurality of slices at a time, a profile detector which has the same number of rows of detection elements as the main detector and measures a profile in the slice direction of the amount of X-ray ray incident to the main detector, and a data processing device for compensating the projection data output from the main detector in accordance with the output of the profile detector.

摘要翻译： 在从切片周围的各个方向将X射线粉末光束照射到被检体的切片的计算机断层摄影装置中，检测通过被检体的X射线的图像数据，得到投影数据， 对投影数据执行重建计算以获取被检体的切片的断层图像，具有多行检测元件的主检测器与被检体的多个切片相对齐，并检测投影数据 一次的多个片，具有与主检测器相同数量的检测元件的轮廓检测器，并且测量入射到主检测器的X射线射线量的切片方向的轮廓，以及数据 处理装置，用于根据轮廓检测器的输出补偿从主检测器输出的投影数据。

公开(公告)号：US06396898B1

公开(公告)日：2002-05-28

申请号：US09718482

申请日：2000-11-24

申请人： Yasuo Saito ,  Hiroaki Miyazaki ,  Hiroshi Aradate

发明人： Yasuo Saito ,  Hiroaki Miyazaki ,  Hiroshi Aradate

IPC分类号： G01N2300

CPC分类号： G01N23/046 ,  G01N2223/419

摘要： A radiation detector includes a plurality of detector modules detachably mounted on a detector base. Each of the detector modules has a plurality of element blocks permanently mounted on a module base. Each element block has a plurality of radiation detection elements formed on a signal substrate in the form of an m×n matrix. A detector module is made up of a plurality of element blocks. A radiation detector is made up of a plurality of detector modules. This makes it possible to tile many detection elements and manufacture a radiation detector with a wide field of view.

摘要翻译： 辐射检测器包括可拆卸地安装在检测器基座上的多个检测器模块。 每个检测器模块具有永久地安装在模块基座上的多个元件块。 每个元件块具有形成在m×n矩阵形式的信号基板上的多个辐射检测元件。 检测器模块由多个元件块组成。 辐射检测器由多个检测器模块组成。 这使得可以铺平许多检测元件并制造具有宽视场的辐射检测器。

公开(公告)号：US06760404B2

公开(公告)日：2004-07-06

申请号：US10117103

申请日：2002-04-08

申请人： Yasuo Saito ,  Hiroaki Miyazaki ,  Hiroshi Aradate

发明人： Yasuo Saito ,  Hiroaki Miyazaki ,  Hiroshi Aradate

IPC分类号： G01T124

CPC分类号： G01N23/046 ,  G01N2223/419

摘要： A radiation detector includes a plurality of detector modules detachably mounted on a detector base. Each of the detector modules has a plurality of element blocks permanently mounted on a module base. Each element block has a plurality of radiation detection elements formed on a signal substrate in the form of an m×n matrix. A detector module is made up of a plurality of element blocks. A radiation detector is made up of a plurality of detector modules. This makes it possible to tile many detection elements and manufacture a radiation detector with a wide field of view.

摘要翻译： 辐射检测器包括可拆卸地安装在检测器基座上的多个检测器模块。 每个检测器模块具有永久地安装在模块基座上的多个元件块。 每个元件块具有形成在m×n矩阵形式的信号基板上的多个辐射检测元件。 检测器模块由多个元件块组成。 辐射检测器由多个检测器模块组成。 这使得可以铺平许多检测元件并制造具有宽视场的辐射检测器。

公开(公告)号：US08094775B2

公开(公告)日：2012-01-10

申请号：US12553594

申请日：2009-09-03

申请人： Yasuhiro Noshi ,  Yasuo Saito ,  Manabu Hiraoka ,  Tatsuo Maeda

发明人： Yasuhiro Noshi ,  Yasuo Saito ,  Manabu Hiraoka ,  Tatsuo Maeda

IPC分类号： A61B6/03 ,  G21K1/04

CPC分类号： A61B6/06 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4021

摘要： An X-ray computer tomography apparatus includes an X-ray tube, a two-dimensional array type X-ray detector, a rotating mechanism, a pair of collimators, a collimator moving mechanism which separately moves the pair of collimators in a direction almost parallel to a rotation axis, a reconstruction processing unit which reconstructs image data in a reconstruction range, and a collimator control unit. The collimator control unit controls the position of each collimator in accordance with the distance between an X-ray central plane corresponding to a cone angle 0° and an end face of the reconstruction range. The collimator moving mechanism moves each of the pair of collimators in the range from the outermost position corresponding to the maximum cone angle to the innermost position offset from a position corresponding to a cone angle of nearly 0° to the opposite side.

摘要翻译： X射线计算机断层摄影装置包括X射线管，二维阵列型X射线检测器，旋转机构，一对准直仪，准直仪移动机构，其将该对准直仪分开地沿大致平行的方向移动 重建在重建范围内的图像数据的重建处理单元和准直器控制单元。 准直仪控制单元根据与锥角0°对应的X射线中心面与重建范围的端面之间的距离来控制每个准直仪的位置。 准直器移动机构将对应于最大锥角的最外侧位置的范围内的一对准直仪的每一个移动到与对应于相对于近似0°的锥角的位置偏移的最内侧位置。

公开(公告)号：US20090225955A1

公开(公告)日：2009-09-10

申请号：US12418309

申请日：2009-04-03

申请人： Kenji Igarashi ,  Masaharu Shimizu ,  Akiji Wakabayashi ,  Yasuo Saito ,  Machiko Iso ,  Tsuguo Kishi ,  Shigeru Sakuta ,  Masaru Kitamura ,  Ryuhachiro Doji ,  Hideki Ide ,  Shuya Nambu ,  Masahiko Yamazaki ,  Katsuya Yamada ,  Yasutada Nakagawa

发明人： Kenji Igarashi ,  Masaharu Shimizu ,  Akiji Wakabayashi ,  Yasuo Saito ,  Machiko Iso ,  Tsuguo Kishi ,  Shigeru Sakuta ,  Masaru Kitamura ,  Ryuhachiro Doji ,  Hideki Ide ,  Shuya Nambu ,  Masahiko Yamazaki ,  Katsuya Yamada ,  Yasutada Nakagawa

IPC分类号： G21K1/02

CPC分类号： G21K1/025 ,  A61B6/032

摘要： The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at least three sides.

摘要翻译： 每个准直器板相对于X射线焦点的角度通过将准直器板嵌入形成在具有一体结构的上部和下部支撑件中的凹槽中来确定。 此外，校正每个准直板的翘曲，并且通过将设置在X射线检测表面侧的抵接板的相应凹槽中的X射线检测器侧的准直板的周边嵌合来维持其平坦度 的上下支撑。 此外，每个准直板由至少三个侧面的上支撑件和下支撑件的相应凹槽和抵接板的相应凹槽支撑。

公开(公告)号：US07302931B2

公开(公告)日：2007-12-04

申请号：US11403942

申请日：2006-04-14

申请人： Yasuo Saito ,  Takahiro Shimura

发明人： Yasuo Saito ,  Takahiro Shimura

IPC分类号： F02D11/10

CPC分类号： F02D9/107 ,  F02D9/1065

摘要： A spring to ensure default opening is constituted by a single piano wire where a return spring with a larger coil diameter and a default spring with a smaller coil diameter are connected via a connection arm formed with a spring hook. The spring with a smaller coil diameter is inserted in the spring with a larger coil diameter thereby the springs are overlapped in an axial direction as a duplex-winding spring structure. Further, a magnetic sensor is provided in a position inside the both spring with a larger coil diameter and spring with a smaller coil diameter.

摘要翻译： 确保默认开口的弹簧由具有较大线圈直径的复位弹簧和具有较小线圈直径的默认弹簧的单个钢琴线构成，该弹簧通过形成有弹簧钩的连接臂连接。 具有较小线圈直径的弹簧以更大的线圈直径插入到弹簧中，从而弹簧在轴向方向上作为双向绕组弹簧结构重叠。 此外，磁传感器设置在具有较大线圈直径的两个弹簧内部的位置和具有较小线圈直径的弹簧中。

公开(公告)号：US07232790B2

公开(公告)日：2007-06-19

申请号：US10332845

申请日：2002-09-09

申请人： Masako Tanaka ,  Yasuo Saito

发明人： Masako Tanaka ,  Yasuo Saito

IPC分类号： C01B31/12

CPC分类号： H01G9/155 ,  B01J20/20 ,  B01J20/30 ,  C01B32/342 ,  Y02E60/13 ,  Y10T428/2918 ,  Y10T428/298

摘要： A method for producing an activated carbon material, wherein the method comprises a step of thermally treating coal-based pitch at two temperature ranges of 400° C. to 600° C. and 600° C. to 900° C.; and a step of mixing the thus obtained carbonaceous material with an alkali metal compound and effecting activation thereof at 600° C. to 900° C., and an activated carbon material obtained by the method. When the activated carbon material of the present invention is used a polarizable electrode material of an electric double layer capacitor, high capacitance per electrode is attained without application of excessive voltage. By adding fibrous material to a coal-based pitch during activation expansion of an alkali molten liquid can be suppressed and productivity can be drastically improved. Furthermore, employment of an fibrous carbon material which is excellent in conductivity as a fibrous material, carbon fiber is melt-bonded on the surface of the activated carbon material, which enables production of a polarizable electrode exhibiting excellent charge/discharge characteristics at high current density.

摘要翻译： 一种生产活性炭材料的方法，其中该方法包括在400℃至600℃和600℃至900℃的两个温度范围内对煤基沥青进行热处理的步骤。 以及将由此获得的碳质材料与碱金属化合物混合并在600℃至900℃下进行活化的步骤，以及通过该方法获得的活性炭材料的步骤。 当本发明的活性炭材料使用双电层电容器的可极化电极材料时，在不施加过大电压的情况下获得高电容量的电极。 通过在碱熔融液体的活化膨胀期间将纤维材料添加到煤基沥青中，可以抑制生产率的提高。 此外，使用作为纤维材料的导电性优异的纤维状碳材料，在活性炭材料的表面上熔融粘合碳纤维，能够制造在高电流密度下具有优异的充放电特性的极化电极 。