公开(公告)号：US20150204987A1

公开(公告)日：2015-07-23

申请号：US14670086

申请日：2015-03-26

Applicant: FUJIFILM CORPORATION

Inventor： Yoshihiro OKADA ,  Haruyasu NAKATSUGAWA

IPC: G01T1/20 ,  A61B6/00 ,  G01T1/202

CPC classification number: G01T1/2018 ,  A61B6/4216 ,  G01T1/202

Abstract: In a photoelectric conversion panel, a plurality of TFTs are formed over an insulating substrate. The TFTs are covered by a first planarizing film. A plurality of photodiodes are formed over the first planarizing film. The photodiodes and the first planarizing film are covered by a second planarizing film. A scintillator contains cesium iodide and is directly vapor-deposited over the photoelectric conversion panel. The scintillator is formed in an area, over the second planarizing film, extending to the outside of an area in which the TFTs and the photodiodes are formed and located inside edges of the first and second polarizing films.

Abstract translation: 在光电转换面板中，在绝缘基板上形成多个TFT。 TFT由第一平面化膜覆盖。 在第一平坦化膜上形成多个光电二极管。 光电二极管和第一平面化膜被第二平面化膜覆盖。 闪烁体含有碘化铯，并直接气相沉积在光电转换面板上。 闪烁体形成在第二平坦化膜上的区域中，延伸到其中形成TFT和光电二极管的区域的外部，并且位于第一和第二偏振膜的边缘内。

公开(公告)号：US20150078528A1

公开(公告)日：2015-03-19

申请号：US14551846

申请日：2014-11-24

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro OKADA

IPC: G01T1/02 ,  G01T1/20 ,  G01N23/04

CPC classification number: A61B6/542 ,  A61B6/4283 ,  A61B6/54 ,  A61B2560/0204 ,  A61B2560/0266 ,  A61N5/1071 ,  G01N23/04 ,  G01N2223/306 ,  G01T1/026 ,  G01T1/15 ,  H04N5/32 ,  H05G1/32 ,  H05G1/34 ,  H05G1/38 ,  H05G1/42 ,  H05G1/44 ,  H05G1/56

Abstract: In an X-ray imaging apparatus, a detection panel has monitor pixels for monitoring X-rays. A signal processor samples a dose signal of a dose per unit time of X-rays according to an output of the monitor pixels. A start detector checks whether irradiation of X-rays is started according to a result of comparison between the dose signal and a start threshold. An AEC device acquires cumulative dose from a start time of the start of irradiation of X-rays until acquisition time after a predetermined time according to the dose signal. According to the cumulative dose, a predicted time point of a reach of the cumulative dose to a target dose is estimated. A stop signal is transmitted to a radiation source controller at the predicted time point, to stop the irradiation of X-rays.

Abstract translation: 在X射线成像装置中，检测面板具有用于监视X射线的监视像素。 信号处理器根据监视像素的输出对X射线每单位时间的剂量信号进行采样。 起始检测器根据剂量信号与开始阈值之间的比较结果检查X射线的照射是否开始。 AEC装置根据剂量信号从X射线开始的开始时刻到达预定时间后的采集时间之间获取累积剂量。 根据累积剂量，估计累积剂量达到目标剂量的预测时间点。 在预测时间点将停止信号发送到辐射源控制器，以停止X射线的照射。

公开(公告)号：US20140161230A1

公开(公告)日：2014-06-12

申请号：US14179569

申请日：2014-02-13

Applicant: FUJIFILM CORPORATION

Inventor： Yoshihiro OKADA ,  Takao KUWABARA

IPC: G01T1/24 ,  A61B6/00

CPC classification number: G01T1/247 ,  A61B6/502 ,  H04N5/23235 ,  H04N5/32

Abstract: A radiographic imaging device includes a radiation detection element including plural same sized hexagonal shaped pixels that detect radiation and are arrayed in a honeycomb pattern, and a pixel density conversion section that performs interpolation processing such that first image data obtained from the radiation detection element is converted into second image data representing an image in which plural pixels are arrayed in a square grid pattern, wherein when d1max denotes the length of the longest diagonal of the hexagonal shaped pixels, S1 denotes the surface area of the hexagonal shaped pixels, and d2max denotes the length of the diagonals of the square grid of the second image data, d1max is equal to or greater than d2max, and d2max is equal to or greater than the value of the square root of S1.

Abstract translation: 射线照相成像装置包括：放射线检测元件，其包括检测辐射并以蜂窝图案排列的多个相同大小的六边形像素;以及像素密度转换部，其进行插值处理，使得从放射线检测元件获得的第一图像数据被转换 表示其中以方格栅格图案排列多个像素的图像的第二图像数据，其中当d1max表示六边形像素的最长对角线的长度时，S1表示六边形像素的表面积，d2max表示 第二图像数据的正方形网格的对角线的长度d1max等于或大于d2max，并且d2max等于或大于S1的平方根的值。

公开(公告)号：US20130313439A1

公开(公告)日：2013-11-28

申请号：US13958886

申请日：2013-08-05

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro OKADA

IPC: G01T1/17 ,  G01T1/20

CPC classification number: G01T1/17 ,  G01T1/20 ,  H04N5/32 ,  H04N5/3696

Abstract: The present invention provides a radiation detecting element and a radiographic imaging device that may reliably detect irradiation of radiation even when a region where radiation is irradiated is set narrowly. Namely, the present invention provides a radiation detection element and a radiographic imaging apparatus, in which radiographic imaging pixels and radiation detection pixels are provided at intersecting portions of scan lines and signal lines.

Abstract translation: 本发明提供一种放射线检测元件和射线照相成像装置，其即使在被辐射的区域被狭窄地设置时也可以可靠地检测辐射照射。 也就是说，本发明提供了一种放射线检测元件和射线照相成像装置，其中放射线成像像素和放射线检测像素设置在扫描线和信号线的交叉部分。

公开(公告)号：US20130163722A1

公开(公告)日：2013-06-27

申请号：US13687113

申请日：2012-11-28

Applicant: FUJIFILM CORPORATION

Inventor： Yoshihiro OKADA ,  Tomoki INOUE

IPC: G01N23/04 ,  G01T1/00

CPC classification number: G01T1/247 ,  G01N23/04 ,  G01T1/00

Abstract: The present invention provides a radiographic image detector that maintains even resolution in 6 directions before and after 4 pixel binning processing. In the radiographic image detector, first TFT switches of each pixel are switched ON according to control signals from plural first scan lines, and charge signals according to accumulated charges are transmitted through data lines. For each pixel group configured by combinations of plural adjacent pixels, second TFT switches of the pixels configuring each of the pixel groups are switched ON according to control signals from plural second scan lines, and binning processing is performed in which 4 pixels worth of charges are read simultaneously and are combined, and charge signals according to the amount of the combined charges are transmitted through the data lines.

Abstract translation: 本发明提供一种放射线图像检测器，其在4像素合并处理之前和之后维持6个方向上的均匀分辨率。 在放射线照相图像检测器中，每个像素的第一TFT开关根据来自多个第一扫描线的控制信号而导通，并且根据累积电荷的电荷信号通过数据线传输。 对于通过多个相邻像素的组合配置的每个像素组，根据来自多个第二扫描线的控制信号，将构成每个像素组的像素的第二TFT开关导通，并且进行合并处理，其中4像素的电荷为 同时读取并组合，并且根据组合电荷的量的充电信号通过数据线传输。

公开(公告)号：US20130136233A1

公开(公告)日：2013-05-30

申请号：US13688047

申请日：2012-11-28

Applicant: FUJIFILM CORPORATION

Inventor： Yoshihiro OKADA

IPC: G01T1/24 ,  G01N23/04

CPC classification number: G01T1/247 ,  G01N23/04 ,  G01T1/208 ,  H01L27/14658 ,  H01L27/14663 ,  H04N5/32 ,  H04N5/37457 ,  H04N5/378

Abstract: The present invention provides radiation detector, radiographic imaging device and radiographic imaging system that may detect irradiated radiation while maintaining quality of radiographic image. The radiation detector has: pixels having a sensor portion that generates charges in accordance with light converted from irradiated radiation, TFT switch that outputs, to a signal line, charges read-out from the sensor portion, and radiation detection TFT switch that is not connected to a signal line; and radiation detection pixels that have the sensor portion, the TFT switch, and radiation detection TFT switch that is connected to a signal line and that outputs, to the signal line, charges read-out from the sensor portion. The radiation detection TFT switches are connected to radiation detection scan lines, and ON/OFF states are controlled by scan signals that are outputted from a radiation detection control circuit.