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61. 发明申请

US20050254618A1 CT image production method and X-ray CT system 有权
标题翻译： CT图像制作方法和X射线CT系统
公开(公告)号：US20050254618A1
公开(公告)日：2005-11-17
申请号：US11125030
申请日：2005-05-09
申请人： Akira Hagiwara
发明人： Akira Hagiwara
IPC分类号： A61B6/03 , G06T11/00 , G21K1/12 , A61B6/00 , G01N23/00
CPC分类号： G06T11/005 , Y10S378/901
摘要： A method to make a common procedure adaptable to reconstruction planes whose positions relative to a multi-channel detector are different from one another. A reference procedure required for construction of a CT image based on reference linear data representing one line or a plurality of lines formed on a reference reconstruction plane is preserved. Real data associated with a first reconstruction plane different from the reference reconstruction plane is used to produce virtual reference linear data equivalent to the reference linear data. A CT image is reconstructed based on the virtual reference linear data using the reference procedure.
摘要翻译：一种适用于相对于多通道检测器的位置彼此不同的重构平面的共同程序的方法。基于参考线性数据构建CT图像所需的参考程序被保留，该参考线性数据表示在参考重建平面上形成的一行或多行。使用与参考重建平面不同的第一重构平面相关联的实数，产生与参考线性数据相等的虚拟参考线性数据。使用参考程序，基于虚拟参考线性数据重建CT图像。

62. 发明申请

US20050135549A1 Multi-positional CT image producing method and X-ray CT apparatus 失效
标题翻译：多位置CT图像产生方法和X射线CT装置
公开(公告)号：US20050135549A1
公开(公告)日：2005-06-23
申请号：US11017014
申请日：2004-12-20
申请人： Akira Hagiwara
发明人： Akira Hagiwara
IPC分类号： A61B6/03 , G06T11/00 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： G06T11/006 , A61B6/027
摘要： For the purpose of producing CT images at a plurality of positions in phase, data are collected by an axial or helical scan using a multi-row detector (S3), and a plurality of CT images at different slice positions are produced from the data collected by one axial or helical scan (S5).
摘要翻译：为了在多个同相位置产生CT图像，使用多行检测器（S 3）通过轴向或螺旋扫描来收集数据，并且从数据产生不同切片位置处的多个CT图像通过一次轴向或螺旋扫描收集（S 5）。

63. 发明申请

US20050094760A1 CT image producing method and X-ray CT apparatus 审中-公开
标题翻译： CT图像制作方法和X射线CT装置
公开(公告)号：US20050094760A1
公开(公告)日：2005-05-05
申请号：US10979934
申请日：2004-11-01
申请人： Akira Hagiwara
发明人： Akira Hagiwara
IPC分类号： A61B6/03 , G06T11/00 , H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12 , H05G1/02
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/412
摘要： For the purpose of scanning a periodically moving subject to be imaged using a multi-row detector and producing a CT image at a desired phase with reduced cone-beam artifacts, the periodically moving subject to be imaged is scanned over a plurality of cycles while rotating an X-ray tube 21 and a multi-row detector 24 around the subject to be imaged and rectilinearly moving a table 12 supporting thereon the subject to be imaged; projection data collected in the same phase range in the plurality of cycles are extracted, the projection data being collected at a projection point onto which a pixel on a reconstruction plane is projected on a multi-row detector plane in a direction of X-ray transmission; and a CT image is produced based on the extracted projection data.
摘要翻译：为了使用多行检测器扫描要成像的周期性移动的被摄体，并且在具有减小的锥束伪影的期望相位产生CT图像的目的，将在多个周期中扫描要成像的周期性移动的被摄体，同时旋转围绕待成像对象的X射线管21和多列检测器24，并且直线地移动支撑在其上的待成像对象的台12; 提取在多个周期中以相同相位范围收集的投影数据，投影数据被收集在投影点上，重建平面上的像素在X射线透射方向上投影在多行检测器平面上 ; 并且基于所提取的投影数据产生CT图像。

64. 发明授权

US5102043A Method and apparatus for producing snow using ultrasonic waves 失效
标题翻译：使用超声波生产雪的方法和装置
公开(公告)号：US5102043A
公开(公告)日：1992-04-07
申请号：US661709
申请日：1991-02-26
申请人： Masanori Inoue , Susumu Kishi , Koji Ishihara , Akira Hagiwara
发明人： Masanori Inoue , Susumu Kishi , Koji Ishihara , Akira Hagiwara
IPC分类号： B01J19/10 , F25C3/04 , G10K11/26 , G10K13/00
CPC分类号： F25C3/04 , B01J19/10 , G10K11/26 , G10K13/00 , F25C2303/044 , F25C2303/0481
摘要： A method for producing snow comprises producing a group of waterdrops by jetting water or water together with compressed air from a nozzle into the atmosphere of 0.degree. C. or less, and freezing the group of waterdrops jetted by applying ultrasonic waves to the group of waterdrops. An apparatus for producing snow comprises a jetting apparatus for producing a group of waterdrops by jetting water or water together with compressed air into the atmosphere of 0.degree. C. or less, and an ultrasonic wave generator for applying ultrasonic waves to the group of waterdrops jetted by the jetting apparatus.
摘要翻译：一种生产雪的方法包括通过将水或水与压缩空气一起从喷嘴喷射到0℃或更低的气氛中来产生一组水滴，并将通过施加超声波喷射的一组水滴冻结到一组水滴。一种用于生产雪的装置包括：喷射装置，通过将水或水与压缩空气一起喷射到0℃或更低的气氛中来产生一组水滴;以及超声波发生器，用于向喷射的一组水滴施加超声波通过喷射装置。

65. 发明申请

US20100188011A1 PIEZOELECTRIC TRANSFORMER DRIVING DEVICE, COLD-CATHODE TUBE INVERTER, COLD-CATHODE TUBE DRIVING DEVICE, AND IMAGE FORMING APPARATUS 有权
标题翻译：压电变压器驱动装置，冷阴极管变频器，冷阴极管驱动装置和图像形成装置
公开(公告)号：US20100188011A1
公开(公告)日：2010-07-29
申请号：US12694321
申请日：2010-01-27
申请人： Toru KOSAKA , Masao Yaji , Akira Hagiwara
发明人： Toru KOSAKA , Masao Yaji , Akira Hagiwara
IPC分类号： H05B41/288 , H02M7/5395
CPC分类号： H05B41/2827
摘要： A piezoelectric transformer driving device including: an oscillator; a frequency-divider outputting a pulse by dividing a clock signal from the oscillator by a frequency-divide ratio received thereto; a switching element driven by the pulse and intermittently applying a voltage to a primary side of a piezoelectric transformer; a frequency-divide ratio instructing unit holding a frequency-divide ratio instruction value of a real number having an integer part and an fractional part; a binarization unit binarizing the frequency-divide ratio instruction value into two different integer frequency-divide ratios and selectively outputting the frequency-divide ratios. The binarization unit adjusts an appearance ratio of the frequency-divide ratios such that an average of the frequency-divide ratios output from the binarization unit is equal to an average of the frequency-divide ratio instruction value.
摘要翻译：一种压电变压器驱动装置，包括：振荡器; 分频器通过将来自振荡器的时钟信号除以接收到的分频比来输出脉冲; 由脉冲驱动并间断地向压电变压器的初级侧施加电压的开关元件; 分频比指令单元，其保持具有整数部分和小数部分的实数的分频比指令值; 二值化单元将分频比指令值二值化为两个不同的整数分频比，并选择性地输出分频比。二值化单元调整分频比的出现比，使得从二值化单元输出的分频比的平均值等于分频比指令值的平均值。

66. 发明授权

US07580501B2 CT image reconstruction method, CT apparatus, and program 失效
标题翻译： CT图像重建方法，CT装置和程序
公开(公告)号：US07580501B2
公开(公告)日：2009-08-25
申请号：US11214503
申请日：2005-08-30
申请人： Akira Hagiwara , Makoto Gohno , Mitsuru Yahata
发明人： Akira Hagiwara , Makoto Gohno , Mitsuru Yahata
IPC分类号： A61B6/03
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/421
摘要： A CT image reconstruction method includes substituting other projection data, which has a predetermined positional relationship to projection data that is found defective during scanning, for the defective data, and interpolating back projection data using a value and information on a scanned position that are contained in the substitute data.
摘要翻译： CT图像重建方法包括将与扫描期间发现有缺陷的投影数据具有预定位置关系的其他投影数据替换为缺陷数据，并且使用包含在扫描位置中的值和信息内插反投影数据替代数据。

67. 发明申请

US20080152076A1 RADIOGRAPHY APPARATUS 有权
标题翻译：放映设备
公开(公告)号：US20080152076A1
公开(公告)日：2008-06-26
申请号：US11952790
申请日：2007-12-07
申请人： Akira Hagiwara
发明人： Akira Hagiwara
IPC分类号： G03B42/02
CPC分类号： G03B42/02 , Y10T29/49002
摘要： For the purpose of improving efficiency in diagnosis by performing image reconstruction for slice planes lying at the same position in a subject both in a forward direction FD and backward direction BD, an amount of positional offset ‘dz’ is acquired, which amount represents a difference in a body axis direction ‘z’ along the forward direction FD and backward direction BD between a first subject position and a second subject position, the first subject position being a position to which a region to be imaged in the subject laid on a cradle 401 is moved when the cradle 401 is moved in the forward direction FD, and the second subject position being a position to which the region to be imaged in the subject laid on the moving cradle 401 is moved when the cradle 401 is moved in the backward direction BD such that the region to be imaged in the subject coincides with the first subject position. Then, respective pixel positions in the forward-path image and backward-path image are corrected based on the amount of positional offset ‘dz’ such that the pixel positions lie at positions corresponding to each other in the body axis direction ‘z’ along the forward direction FD and backward direction BD.
摘要翻译：为了通过对正向FD和反方向BD上的被摄体位于相同位置的切片平面进行图像重建来提高诊断效率，获得位置偏移量“dz”的量，该量表示差异在第一被摄体位置和第二被摄体位置之间沿着前进方向FD的体轴方向“z”和在第一被摄体位置和第二被摄体位置之间的后方向BD，第一被摄体位置是被放置在支架401上的被摄体区域成像的位置当托架401沿正向FD移动时移动，并且第二被摄体位置是当托架401沿向后方向移动时被放置在移动支架401上的被摄体中的被成像区域移动到的位置 BD使得被摄体中要成像的区域与第一被摄体位置一致。然后，基于位置偏移量“dz”的量来校正前向路径图像和反向路径图像中的各个像素位置，使得像素位置位于沿着沿着身体轴线方向“z”的彼此对应的位置前进方向FD和后退方向BD。

68. 发明申请

US20080130823A1 X-RAY TOMOGRAPHY APPARATUS AND ARTIFACT REDUCING METHOD 有权
标题翻译： X射线摄影装置和减法方法
公开(公告)号：US20080130823A1
公开(公告)日：2008-06-05
申请号：US11924462
申请日：2007-10-25
申请人： Akira Hagiwara
发明人： Akira Hagiwara
IPC分类号： A61B6/00
CPC分类号： G06T5/005 , A61B6/027 , A61B6/5258 , G01N2223/401 , G06T5/20 , G06T11/008 , G06T2200/04 , G06T2207/10081 , G06T2207/30004
摘要： The present invention provides an X-ray tomography apparatus that reduces artifacts. The X-ray tomography apparatus includes scan device for exposing X rays to a subject to create projection data of the subject, CT value change specifying device for specifying the amount of change in CT value in a body-axis direction with respect to a target pixel of a tomographic image obtained by backprojecting the projection data, a first artifact determination unit for determining whether the amount of change in CT value is contained within a predetermined range in a peripheral decision pixel area containing the target pixel, a second artifact determination unit for determining that when the number of pixels contained in the predetermined range is found to be a first threshold value or more by a first artifact decision, the target pixel is as an artifact, and an artifact reduction unit for, when it is judged by the second artifact determination unit that the target pixel is as the artifact, performing image processing so as to reduce the artifact.
摘要翻译：本发明提供一种减少伪像的X射线断层摄影装置。 X射线断层摄影装置包括用于向对象曝光X射线以产生被摄体的投影数据的扫描装置，用于指定相对于目标像素的体轴方向的CT值的变化量的CT值变更指定装置通过反投影投影数据获得的断层图像的第一伪影确定单元，用于确定包含目标像素的外围判定像素区域中CT值的变化量是否包含在预定范围内的第一伪影确定单元，用于确定当通过第一伪像判定发现包含在预定范围内的像素数量是第一阈值或更多时，目标像素是伪像，并且当由第二伪影判断时，伪像减少单元确定单元，目标像素是伪像，执行图像处理以减少伪像。

69. 发明授权

US07076019B2 Radiation computed tomography apparatus 有权
标题翻译：辐射计算机断层摄影装置
公开(公告)号：US07076019B2
公开(公告)日：2006-07-11
申请号：US10828456
申请日：2004-04-20
申请人： Akira Hagiwara , Kotoko Morikawa
发明人： Akira Hagiwara , Kotoko Morikawa
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/06 , A61B6/542 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T11/005
摘要： An X-ray CT apparatus including an X-ray tube, a detector array including a plurality of detector rows along the axis of rotation, and a reconstructing section for calculating and reconstructing tomographic image data of a subject based on the acquired projection data. The CT apparatus also includes a collimator for adjusting the emission extent of the X-rays from the X-ray tube in response to a control command, and a control section for calculating detector rows required for acquiring the projection data for use in reconstruction of a certain portion of the tomographic image data based on parameters relating to reconstruction of the tomographic image data by the reconstructing section, and outputting the control command to the collimator for emitting the X-rays to impinge upon the calculated detector rows.
摘要翻译：一种X射线CT装置，包括X射线管，包括沿着旋转轴的多个检测器行的检测器阵列，以及用于基于所获取的投影数据计算和重建被检体的断层图像数据的重建部分。 CT装置还包括：准直器，用于响应于控制命令调整来自X射线管的X射线的发射范围;以及控制部分，用于计算获取用于重建中的投影数据所需的检测器行基于由重建部分重建断层图像数据的参数的断层图像数据的某些部分，并将控制命令输出到准直仪以发射X射线以撞击所计算的检测器行。

70. 发明申请

US20050201511A1 CT image producing method and X-ray CT apparatus 有权
标题翻译： CT图像制作方法和X射线CT装置
公开(公告)号：US20050201511A1
公开(公告)日：2005-09-15
申请号：US11074228
申请日：2005-04-08
申请人： Akira Hagiwara , Kotoko Morikawa
发明人： Akira Hagiwara , Kotoko Morikawa
IPC分类号： A61B6/03 , G06T11/00 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： G06T11/006
摘要： A method for producing a CT image by applying Z-filtering to axial scan data collected using a multi-row detector, wherein second axial scan data is collected at a second position Z2 to which an X-ray tube and a multi-row detector are rectilinearly moved relative to a subject to be imaged from a first position Z1 toward an end of the multi-row detector, projection data corresponding to a central portion a2 of a reconstruction field P3 near the end of the multi-row detector is extracted from the second axial scan data, and Z-filtering is applied based on the projection data of reconstruction fields P1, P2 and P3 to produce one CT image.
摘要翻译：一种通过对使用多行检测器收集的轴向扫描数据应用Z滤波来生成CT图像的方法，其中在X射线管和多行检测器的第二位置Z 2处收集第二轴扫描数据相对于要从第一位置Z 1朝向多行检测器的端部成像的被摄体被直线移动，与多行检测器的端部附近的重建场P 3的中心部分a 2相对应的投影数据从第二轴扫描数据中提取出，并且基于重构场P 1，P 2和P 3的投影数据应用Z滤波，以产生一个CT图像。

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