专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2008194152A Radiation imaging apparatus 有权
标题翻译：辐射成像装置
公开(公告)号：JP2008194152A
公开(公告)日：2008-08-28
申请号：JP2007030766
申请日：2007-02-09
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： SAKAGUCHI NOBUYASU , NISHINO KAZUYOSHI
IPC分类号： A61B6/00 , G01T1/20 , G01T1/24 , G01T7/00 , H04N5/32
摘要： PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus capable of appropriately detecting a defect pixel.
SOLUTION: The dispersion of time (time dispersion) σ
2 of a pixel value is acquired as a statistic of the time variation of the pixel value from a time varying rate of the pixel value by collecting the pixel value from detected X rays sequentially over time. Since the time dispersion σ
2 acquired in this manner is an index representing a history of the time variation of the pixel value, the defect pixel is appropriately detected from the time dispersion σ
2 for a pixel which is not defect constantly.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够适当地检测缺陷像素的放射线摄像装置。解决方案：通过收集像素值的时间变化率（像素值的时间变化率）的像素值的时间变化的统计量，获取像素值的时间（时间色散）σ 2 随着时间的推移，检测到的X射线的像素值顺序。由于以这种方式获取的时间色散σ 2 是表示像素值的时间变化历史的索引，因此从时间色散σ 2 用于不缺陷的像素。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2009095572A Radiation imaging apparatus 有权
标题翻译：辐射成像装置
公开(公告)号：JP2009095572A
公开(公告)日：2009-05-07
申请号：JP2007271923
申请日：2007-10-19
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： SAKAGUCHI NOBUYASU
IPC分类号： A61B6/02
摘要： PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus capable of acquiring a clear tomographic image having a long visual field without generating a wave-shaped artifact.
SOLUTION: Whenever an X-ray tube 2 and a FPD 3 are relatively moved to a subject M at prescribed pitch, radiation is applied from the X-ray tube and projection images are acquired by the FPD. A projection image analysis part 9b decomposes the respective projection images every projection angle of the radiation corresponding to the prescribed pitch and generates partial projection images. An image composing part 9c connects the partial projection images of the same projection angle in the order of acquisition of the projection images one after another to form a composite projection image. An image pretreatment part 9e detects areas where the subject is not present in the composite projection image formed by the image composing part, and pretreats the composite projection value by replacing the pixel value of the region of the image with a predetermined value. A reconstruction processing part 9d executes the reconstruction processing based on the pretreated composite projection image and generates the tomographic image of the subject.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够获取具有长视野的清晰断层图像而不产生波形伪影的放射线成像装置。解决方案：每当X射线管2和FPD 3以规定的间距相对移动到被摄体M时，从X射线管施加辐射，并且通过FPD获取投影图像。投影图像分析部9b对与规定间距对应的放射线的每个投影角分解各投影图像，并生成部分投影图像。图像合成部9c依次以投影图像的取得顺序连接相同投影角度的部分投影图像，形成复合投影图像。图像预处理部9e检测由图像构成部分形成的复合投影图像中不存在被摄体的区域，并且通过以预定值替换图像的区域的像素值来预处理复合投影值。重建处理部9d基于预处理复合投影图像执行重建处理，并生成被摄体的断层图像。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009060954A Radiographic apparatus 有权
标题翻译：放映设备
公开(公告)号：JP2009060954A
公开(公告)日：2009-03-26
申请号：JP2007228955
申请日：2007-09-04
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： SAKAGUCHI NOBUYASU , BABA SHINGO , MORI KAZUHIRO
IPC分类号： A61B6/00
摘要： PROBLEM TO BE SOLVED: To provide a radiographic apparatus which appropriately outputs images even in the case of performing subtraction processing.
SOLUTION: By controlling a light source to be OFF in a subtraction photographing mode B of radiating X-rays corresponding to a high voltage value and X-rays corresponding to a low voltage value from an X-ray tube in order to acquire a high voltage image and a low voltage image for the subtraction processing, a luminance difference between the upper and lower parts of the image is reduced or the like for instance for a subtraction image processed in a subtraction processing means, and the image is appropriately output.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供即使在执行减法处理的情况下也适当地输出图像的放射线照相设备。解决方案：通过在相应于高电压值的X射线辐射X射线的相减拍摄模式B中控制光源OFF，并从X射线管获取对应于低电压值的X射线，以获得用于减法处理的高电压图像和低电压图像，例如对于在减法处理装置中处理的减法图像，图像的上部和下部之间的亮度差降低等，并且图像被适当地输出。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2008070253A Electromagnetic wave detector and radiation imaging apparatus 有权
标题翻译：电磁波探测器和放射成像装置
公开(公告)号：JP2008070253A
公开(公告)日：2008-03-27
申请号：JP2006249739
申请日：2006-09-14
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： SAKAGUCHI NOBUYASU , HIRASAWA SHINYA
IPC分类号： G01T1/24 , A61B6/00 , H01L31/09 , H04N5/32
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic wave detector for suppressing a residual image and reducing an intensity difference, and a radiation imaging apparatus using it. SOLUTION: A flat panel X-ray detector includes: a semiconductor layer for converting X rays into a charge; a plurality of divided electrodes for collecting the charge converted by the semiconductor layer as a detection signal; a switching element for reading the collected detection signal; two amplifier array circuits for processing the read detection signal; and a light irradiating section for irradiating the divided electrodes in the semiconductor layer with a light. The light irradiating section is turned off during an accumulating period, and turned on during a reading period. A residual output can be prevented from being generated, and the afterimage can be suppressed during the reading period. A crosstalk between a leakage current and a signal line can be suppressed, and the intensity difference can be reduced in an image during the accumulating period. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于抑制残留图像并降低强度差的电磁波检测器以及使用它的放射线成像装置。解决方案：平板X射线检测器包括：用于将X射线转换成电荷的半导体层; 多个分割电极，用于收集由半导体层转换的电荷作为检测信号; 用于读取所收集的检测信号的开关元件; 两个用于处理读出检测信号的放大器阵列电路; 以及光照射部，用于用光照射半导体层中的分割电极。光照射部在积存期间关闭，在读取期间开启。可以防止产生残留输出，并且在读取期间可以抑制残像。可以抑制泄漏电流和信号线之间的串扰，并且可以在累积周期期间在图像中降低强度差。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2007275228A X-ray imaging device 有权
标题翻译： X射线成像装置
公开(公告)号：JP2007275228A
公开(公告)日：2007-10-25
申请号：JP2006104176
申请日：2006-04-05
申请人： Shimadzu Corp , 株式会社島津製作所
发明人： SHIBATA KOICHI , MORI KAZUHIRO , NOTOHARA DAISUKE , SAKAGUCHI NOBUYASU
IPC分类号： A61B6/00
摘要： PROBLEM TO BE SOLVED: To sufficiently and properly suppress density unevenness of an elongate x-ray image. SOLUTION: A DC component detection part 15 detects a DC component which becomes an index showing the average brightness of a slot-like X-ray image constructing the longitudinal x-ray image, and a DC component equalizing part 16 equalizes the levels of the DC component of all the slot-like X-ray images, so that difference of the average brightness of images between the slot like X-ray images forming the elongate x-ray image PA is reduced in advance. As the result, the density unevenness of the elongated x-ray image which is obtained by connecting the slot-like X-ray images on a longer edge side by an elongate x-ray image obtaining part 17 is suppressed sufficiently without expanding an overlapping area where the ends of the slot-like x-ray images are overlapped with each other. Thus, the density unevenness of the elongate x-ray image can be suppressed sufficiently and properly. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了充分且适当地抑制细长x射线图像的浓度不均匀性。解决方案：直流分量检测部分15检测成为构成纵向X射线图像的狭缝状X射线图像的平均亮度的指标的直流分量，直流分量均衡部16使水平的所有狭缝状X射线图像的DC分量，使得像形成细长X射线图像PA的X射线图像之间的像素之间的图像的平均亮度的差异预先减小。结果，通过细长X射线图像获得部17连接长边缘侧的狭缝状X射线图像而获得的细长x射线图像的浓度不均匀性被充分抑制，而不会扩大重叠面积其中狭缝状X射线图像的端部彼此重叠。因此，可以充分且适当地抑制细长x射线图像的浓度不均匀性。版权所有（C）2008，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式